501 results on '"Kim, Michael"'
Search Results
2. Evaluating the current breadth of randomized control trials on cardiac arrest: A scoping review.
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Toy, Jake, Friend, Lauren, Wilhelm, Kelsey, Kim, Michael, Gahm, Claire, Panchal, Ashish R., Dillon, David, Donofrio‐Odmann, Joelle, Montroy, Juan Carlos, Gausche‐Hill, Marianne, Bosson, Nichole, Coute, Ryan, Schlesinger, Shira, and Menegazzi, James
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- 2024
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3. The Association between Sampling and Survival in Patients with Pancreatic Ductal Adenocarcinoma Who Received Neoadjuvant Therapy and Pancreaticoduodenectomy.
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Taherian, Mehran, Katz, Matthew H. G., Prakash, Laura R., Wei, Dongguang, Tong, Yi Tat, Lai, Zongshan, Chatterjee, Deyali, Wang, Hua, Kim, Michael, Tzeng, Ching-Wei D., Ikoma, Naruhiko, Wolff, Robert A., Zhao, Dan, Koay, Eugene J., Maitra, Anirban, and Wang, Huamin
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ADENOCARCINOMA ,STATISTICAL correlation ,LYMPH nodes ,RESEARCH funding ,CANCER relapse ,PANCREATIC duct ,DESCRIPTIVE statistics ,MULTIVARIATE analysis ,PANCREATIC tumors ,PANCREATICODUODENECTOMY ,PANCREAS ,METASTASIS ,COMBINED modality therapy ,RESEARCH ,PROGRESSION-free survival ,SURVIVAL analysis (Biometry) ,OVERALL survival - Abstract
Simple Summary: We examined the association of the entire submission of the tumor (ESOT) and the entire submission of the pancreas (ESOP) with clinicopathologic features and survival in 627 pancreatic cancer patients who received neoadjuvant therapy (NAT). We demonstrated that both ESOT and ESOP were associated with lower ypT, less frequent perineural invasion, and better tumor response. Both ESOT and ESOP were associated with less frequent recurrence/metastasis, better disease-free survival (DFS), and overall survival (OS) in the overall study population. ESOP was associated with better DFS and OS in patients with ypT0/ypT1 or ypN0 tumors and better OS in patients with complete or near-complete response. ESOT was associated with better OS in patients with ypT0/ypT1 or ypN0 tumors. Both ESOT and ESOP were independent prognostic factors for OS in multivariate survival analyses. Therefore, ESOP and ESOT are associated with the prognosis of PDAC patients with complete or near-complete response and a ypT0/ypT1 tumor after NAT. Adequate sampling is essential to an accurate pathologic evaluation of pancreatectomy specimens resected for pancreatic ductal adenocarcinoma (PDAC) after neoadjuvant therapy (NAT). However, limited data are available for the association between the sampling and survival in these patients. We examined the association of the entire submission of the tumor (ESOT) and the entire submission of the pancreas (ESOP) with disease-free survival (DFS) and overall survival (OS), as well as their correlations with clinicopathologic features, for 627 patients with PDAC who received NAT and pancreaticoduodenectomy. We demonstrated that both ESOT and ESOP were associated with lower ypT, less frequent perineural invasion, and better tumor response (p < 0.05). ESOP was also associated with a smaller tumor size (p < 0.001), more lymph nodes (p < 0.001), a lower ypN stage (p < 0.001), better differentiation (p = 0.02), and less frequent lymphovascular invasion (p = 0.009). However, since ESOP and ESOT were primarily conducted for cases with no grossly identifiable tumor or minimal residual carcinoma in initial sections, potential bias cannot be excluded. Both ESOT and ESOP were associated with less frequent recurrence/metastasis and better DFS and OS (p < 0.05) in the overall study population. ESOP was associated with better DFS and better OS in patients with ypT0/ypT1 or ypN0 tumors and better OS in patients with complete or near-complete response (p < 0.05). ESOT was associated with better OS in patients with ypT0/ypT1 or ypN0 tumors (p < 0.05). Both ESOT and ESOP were independent prognostic factors for OS according to multivariate survival analyses. Therefore, accurate pathologic evaluation using ESOP and ESOT is associated with the prognosis in PDAC patients with complete or near-complete pathologic response and ypT0/ypT1 tumor after NAT. [ABSTRACT FROM AUTHOR]
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- 2024
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4. Effect of surgical approach on early return to intended oncologic therapy after resection for pancreatic ductal adenocarcinoma.
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Lu, Pamela W., Lyu, Heather G., Prakash, Laura R., Chiang, Yi-Ju Sabrina, Maxwell, Jessica E., Snyder, Rebecca A., Kim, Michael P., Tzeng, Ching-Wei D., Katz, Matthew H. G., and Ikoma, Naruhiko
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SURGICAL robots ,STATISTICAL models ,EARLY medical intervention ,PATIENT safety ,PROBABILITY theory ,FISHER exact test ,KRUSKAL-Wallis Test ,PATIENT readmissions ,TREATMENT effectiveness ,RETROSPECTIVE studies ,DESCRIPTIVE statistics ,MULTIVARIATE analysis ,PANCREATIC tumors ,LONGITUDINAL method ,PANCREATICODUODENECTOMY ,ADJUVANT chemotherapy ,ODDS ratio ,PANCREATECTOMY ,DUCTAL carcinoma ,CONFIDENCE intervals ,TREATMENT delay (Medicine) ,DATA analysis software ,LENGTH of stay in hospitals ,TIME - Abstract
Background: Although robotic pancreatectomy may facilitate an earlier functional recovery, the impact of a robotic pancreatectomy program during its early experience on the timing of return to intended oncologic therapy (RIOT) after surgery is unknown. Methods: In this retrospective cohort study, we used propensity score matching with a 1:2 ratio to compare patients who underwent robotic or open surgery (distal pancreatectomy or pancreatoduodenectomy) for pancreatic ductal adenocarcinoma (PDAC) during the first 3 years of our robotic pancreatectomy experience (January 2018–December 2021). Generalized estimating equations modeling was used to evaluate the effect of surgical approach on early RIOT, defined as adjuvant chemotherapy initiation within 8 weeks after surgery, and late RIOT, defined as initiation within 12 weeks after surgery. Results: The matched cohort included 26 patients who underwent robotic pancreatectomy and 52 patients who underwent open pancreatectomy. Rates of receipt of adjuvant chemotherapy were 96.2% and 78.9%, respectively. Rate of early RIOT in the robotic group (73.1% was higher than that in the open group (44.2%; P = 0.018). In multivariable analysis, a robotic approach was associated with early RIOT (odds ratio, 3.54; 95% confidence interval 1.08–11.62; P = 0.038). Surgical approach did not impact late RIOT (odds ratio, 3.21; 95% confidence interval 0.71–14.38; P = 0.128). Conclusions: Compared with open pancreatectomy, robotic pancreatectomy did not delay RIOT. In fact, odds of early RIOT were increased, which supports the oncological safety of our robotic pancreatectomy program during its implementation. [ABSTRACT FROM AUTHOR]
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- 2024
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5. Comparison of patient‐reported outcomes and clinical characteristics among patients with pituitary macroadenomas and giant adenomas.
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Miller, Jessa E., Chung, Hye Rhyn, Uy, Benjamin R., Kosaraju, Nikitha, Shih, Ryan M., Ko, Myungjun, Esswein, Shannon R., Abiri, Arash, Khosravi, Pooya, Huck, Nolan, Nguyen, Cecilia H., Hsu, Timothy, Kim, Michael G., Hsu, Frank P. K., Kim, Won, Lee, Jivianne K., Suh, Jeffrey D., Bergsneider, Marvin, Kuan, Edward C., and Wang, Marilene B.
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- 2024
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6. Are paediatric cardiology textbooks obsolete in the current digital era?
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Kim, Michael E., Tretter, Justin T., Anderson, Robert H., Spicer, Diane E., Penny, Daniel J., Kumar, R. Krishna, and McMahon, Colin J.
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- 2024
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7. Impact of Robotic Assistance on Minimally Invasive Surgery for Type II Endometrial Cancer: A National Cancer Database Analysis.
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Lamiman, Kelly, Silver, Michael, Goncalves, Nicole, Kim, Michael, and Alagkiozidis, Ioannis
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SURGICAL robots ,LYMPH nodes ,UTERINE tumors ,CANCER invasiveness ,LAPAROSCOPIC surgery ,ABDOMINAL surgery ,MINIMALLY invasive procedures ,TREATMENT effectiveness ,RETROSPECTIVE studies ,DESCRIPTIVE statistics ,MULTIVARIATE analysis ,ENDOMETRIAL tumors ,SURVIVAL analysis (Biometry) ,LENGTH of stay in hospitals - Abstract
Simple Summary: This study compares the survival and surgical outcomes of patients who underwent conventional versus robot-assisted laparoscopy for aggressive histologic types of uterine cancer. While there is no association between the use of robotic assistance and overall survival, robot-assisted laparoscopy is associated with a decreased risk for conversion to laparotomy and a higher rate of surgical lymph node evaluation. The objective of this study is to compare the overall survival (OS) and surgical outcomes between conventional laparoscopy and robot-assisted laparoscopy (RAL) in women with type II endometrial cancer. We identified a large cohort of women who underwent hysterectomy for type II endometrial cancer between January 2010 and December 2014 using the National Cancer Database (NCDB). The primary outcome was to compare the OS of conventional laparoscopy versus RAL. Secondary outcomes included the length of hospital stay, 30-day readmission rate, 90-day mortality, rates of lymph node retrieval, rates of node positivity, and rates of conversion to laparotomy. Cohorts were compared and multivariable logistic regression was used to determine characteristics with statistically significant predictors of outcome. We identified 7168 patients with stage I–III type II endometrial cancer who had minimally invasive surgery as primary treatment between 2010 and 2014. A total of 5074 patients underwent RAL. Women who underwent RAL were less likely to have stage III disease (26.4% vs. 29.9%, p = 0.008) and had smaller primary tumors (4.6 vs. 4.1 cm, p < 0.001). In a multivariable model, there was no difference in OS between conventional laparoscopy and RAL. With regard to postoperative outcomes, RAL was associated with a decreased risk for conversion to laparotomy (2.7% vs. 12%, p < 0.001), a shorter hospital stay (1 vs. 2 days, p < 0.001), a decreased 90-day mortality (1.3% vs. 2.2%, p = 0.004), and an increased number of lymph nodes sampled (14 vs. 12, p < 0.001). In multivariable analysis, the use of RAL was independently associated with a reduced rate of conversion to laparotomy. In conclusion, there was no difference in OS between conventional laparoscopy and RAL in type II endometrial cancer in a large retrospective cohort of patients from the NCDB. RAL was associated with a decreased risk of conversion to laparotomy. [ABSTRACT FROM AUTHOR]
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- 2024
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8. Escalated‐dose radiotherapy for unresected locally advanced pancreatic cancer: Patterns of care and survival in the United States.
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Shi, Christopher, De, Brian, Tran Cao, Hop S., Liu, Suyu, Florez, Marcus A., Kouzy, Ramez, Grippin, Adam J., Katz, Matthew H. G., Tzeng, Ching‐Wei D., Ikoma, Naruhiko, Kim, Michael P., Lee, Sunyoung, Willis, Jason, Noticewala, Sonal S., Minsky, Bruce D., Smith, Grace L., Holliday, Emma B., Taniguchi, Cullen M., Koong, Albert C., and Das, Prajnan
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CANCER treatment ,PANCREATIC cancer ,RADIOTHERAPY ,ODDS ratio ,LOGISTIC regression analysis ,PLANNING techniques - Abstract
Introduction: With locally advanced pancreatic cancer (LAPC), uncontrolled local tumor growth frequently leads to mortality. Advancements in radiotherapy (RT) techniques have enabled conformal delivery of escalated‐dose RT (EDR), which may have potential local control and overall survival (OS) benefits based on retrospective and early prospective studies. With evidence for EDR emerging, we characterized the adoption of EDR across the United States and its associated outcomes. Methods: We searched the National Cancer Database for nonsurgically managed LAPC patients diagnosed between 2004 and 2019. Pancreas‐directed RT with biologically effective doses (BED10) ≥39 and ≤70 Gy was labeled conventional‐dose RT (CDR), and BED10 >70 and ≤132 Gy was labeled EDR. We identified associations of EDR and OS using logistic and Cox regressions, respectively. Results: Among the definitive therapy subset (n = 54,115) of the entire study cohort (n = 91,493), the most common treatments were chemotherapy alone (69%), chemotherapy and radiation (29%), and RT alone (2%). For the radiation therapy subset (n = 16,978), use of pancreas‐directed RT remained between 13% and 17% over the study period (ptrend > 0.999). Using multivariable logistic regression, treatment at an academic/research facility (adjusted odds ratio [aOR] 1.46, p < 0.001) and treatment between 2016 and 2019 (aOR 2.54, p < 0.001) were associated with greater receipt of EDR, whereas use of chemotherapy (aOR 0.60, p < 0.001) was associated with less receipt. Median OS estimates for EDR and CDR were 14.5 months and 13.0 months (p < 0.0001), respectively. For radiation therapy subset patients with available survival data (n = 13,579), multivariable Cox regression correlated EDR (adjusted hazard ratio 0.85, 95% confidence interval 0.80–0.91; p < 0.001) with longer OS versus CDR. Discussion and Conclusions: Utilization of EDR has increased since 2016, but overall utilization of RT for LAPC has remained at less than one in five patients for almost two decades. These real‐world results additionally provide an estimate of effect size of EDR for future prospective trials. [ABSTRACT FROM AUTHOR]
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- 2024
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9. Risks and Benefits of Device-Assisted Treatment of Pulmonary Embolism.
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Kim, Sofia, Kim, Michael, and Kodra, Arber
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- 2024
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10. Classification of Post-pancreatectomy Readmissions and Opportunities for Targeted Mitigation Strategies.
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Boyev, Artem, Azimuddin, Ahad, Prakash, Laura R., Newhook, Timothy E., Maxwell, Jessica E., Bruno, Morgan L., Arvide, Elsa M., Dewhurst, Whitney L., Kim, Michael P., Ikoma, Naruhiko, Lee, Jeffrey E., Snyder, Rebecca A., Katz, Matthew H. G., and Tzeng, Ching-Wei D.
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- 2024
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11. Salivary Gland Disorders: Rapid Evidence Review.
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Kim, Michael J., Milliren, Anna, and Gerold, Jr., Dennis J.
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SALIVARY glands ,SIALADENITIS ,SUBMANDIBULAR gland ,PAROTID glands ,SIALOLITHIASIS ,ORAL hygiene ,PHYSICIANS - Abstract
The major salivary glands are the paired parotid, submandibular, and sublingual glands. Salivary gland disorders can affect the glandular tissue or its excretory system. The parotid glands are the largest and produce aqueous serous secretions that are less immunogenic. They are more susceptible to infections and neoplasms. The submandibular glands produce mucinous secretions that are high in calcium and phosphate salts through a long submandibular duct that flows against gravity. The submandibular glands are responsible for more than 80% of salivary stones. Sialadenitis can be acute or chronic and caused by bacterial, viral, and obstructive etiologies; the most common bacteria is Staphylococcus aureus. The most common viral etiologies in children are mumps (globally) and juvenile recurrent parotitis (in vaccinated populations). Sialadenosis is a chronic asymptomatic enlargement of the salivary glands due to systemic disease. Sialolithiasis causes up to 50% of salivary gland disorders. It is associated with salivary stasis and inflammation caused by dehydration, malnutrition, medications, or chronic illness. Obstruction is also caused by trauma, stenosis, and mucoceles. Neoplasms are rare and typically benign, but they warrant referral and imaging with ultrasonography, computed tomography, or magnetic resonance sialography. Most disorders are managed with conservative measures by treating the underlying etiology, optimizing predisposing factors, controlling pain, and increasing salivary flow with sialagogues, hydration, massage, warm compresses, oral hygiene, and medication adjustment. Sialendoscopy is a gland-sparing technique that can treat obstructive and nonobstructive disorders. (Am Fam Physician. 2024; 109(6): 550–559. Copyright © 2024 American Academy of Family Physicians.) The major salivary glands are the paired parotid, submandibular, and sublingual glands. Salivary gland disorders can affect the glandular tissue or its excretory system. The parotid glands are the largest and produce aqueous serous secretions that are less immunogenic. They are more susceptible to infections and neoplasms. The submandibular glands produce mucinous secretions that are high in calcium and phosphate salts through a long submandibular duct that flows against gravity. The submandibular glands are responsible for more than 80% of salivary stones. Sialadenitis can be acute or chronic and caused by bacterial, viral, and obstructive etiologies; the most common bacteria is
Staphylococcus aureus . The most common viral etiologies in children are mumps (globally) and juvenile recurrent parotitis (in vaccinated populations). Sialadenosis is a chronic asymptomatic enlargement of the salivary glands due to systemic disease. Sialolithiasis causes up to 50% of salivary gland disorders. It is associated with salivary stasis and inflammation caused by dehydration, malnutrition, medications, or chronic illness. Obstruction is also caused by trauma, stenosis, and mucoceles. Neoplasms are rare and typically benign, but they warrant referral and imaging with ultrasonography, computed tomography, or magnetic resonance sialography. Most disorders are managed with conservative measures by treating the underlying etiology, optimizing predisposing factors, controlling pain, and increasing salivary flow with sialagogues, hydration, massage, warm compresses, oral hygiene, and medication adjustment. Sialendoscopy is a gland-sparing technique that can treat obstructive and nonobstructive disorders. (Am Fam Physician . 2024;109(6):550-559. Copyright © 2024 American Academy of Family Physicians.) [ABSTRACT FROM AUTHOR]- Published
- 2024
12. Mimicking the Reactivity of LPMOs with a Mononuclear Cu Complex.
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Sagar, Kundan, Kim, Michael, Wu, Tong, Zhang, Shuming, Bominaar, Emile L., Siegler, Maxime A., Hendrich, Michael, and Garcia‐Bosch, Isaac
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COPPER ,OXYGENASES ,AMINO acid residues ,ELECTRON donors ,HYDROXYL group ,METALLOENZYMES ,POLYSACCHARIDES - Abstract
Lytic polysaccharide monooxygenases (LPMOs) are Cu‐dependent metalloenzymes that catalyze the hydroxylation of strong C−H bonds in polysaccharides using O2 or H2O2 as oxidants (monooxygenase/peroxygenase). In the absence of C−H substrate, LPMOs reduce O2 to H2O2 (oxidase) and H2O2 to H2O (peroxidase) using proton/electron donors. This rich oxidative reactivity is promoted by a mononuclear Cu center in which some of the amino acid residues surrounding the metal might accept and donate protons and/or electrons during O2 and H2O2 reduction. Herein, we utilize a podal ligand containing H‐bond/proton donors (LH2) to analyze the reactivity of mononuclear Cu species towards O2 and H2O2. [(LH2)CuI]1+ (1), [(LH2)CuII]2+ (2), [(LH−)CuII]1+ (3), [(LH2)CuII(OH)]1+ (4), and [(LH2)CuII(OOH)]1+ (5) were synthesized and characterized by structural and spectroscopic means. Complex 1 reacts with O2 to produce 5, which releases H2O2 to generate 3, suggesting that O2 is used by LPMOs to generate H2O2. The reaction of 1 with H2O2 produces 4 and hydroxyl radical, which reacts with C−H substrates in a Fenton‐like fashion. Complex 3, which can generate 1 via a reversible protonation/reduction, binds H2O and H2O2 to produce 4 and 5, respectively, a mechanism that could be used by LPMOs to control oxidative reactivity. [ABSTRACT FROM AUTHOR]
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- 2024
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13. Different Immunologic Profiles Are Associated With Distinct Clinical Phenotypes in Longitudinally Observed Patients With Systemic Lupus Erythematosus.
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Manion, Kieran, Muñoz‐Grajales, Carolina, Kim, Michael, Atenafu, Eshetu, Faheem, Zoha, Gladman, Dafna D., Urowitz, Murray, Touma, Zahi, and Wither, Joan E.
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SYSTEMIC lupus erythematosus treatment ,FLOW cytometry ,PARAMETERS (Statistics) ,SYSTEMIC lupus erythematosus ,DECISION making in clinical medicine ,LONGITUDINAL method ,MATHEMATICAL statistics ,T helper cells ,PHENOTYPES ,NONPARAMETRIC statistics ,B cells ,SYMPTOMS - Abstract
Objective: The aim of this study was to determine the immunologic profile associated with disease flares in patients with systemic lupus erythematosus (SLE) and to investigate the clinical significance of any differences observed between patients during and following a flare. Methods: Multiparameter flow cytometry was used to examine 47 immune populations within the peripheral blood of 16 healthy controls, 25 patients with clinically quiescent SLE, and 46 patients with SLE experiencing a flare at baseline and at 6‐ and 12‐month follow‐up visits. Unsupervised clustering was used to identify patients with similar immune profiles and to track changes over time. Parametric or nonparametric statistics were used when appropriate to assess the association of cellular phenotypes with clinical and laboratory parameters. Results: Five clusters of patients were identified that variably contained patients with active and quiescent SLE, and that had distinct clinical phenotypes. Patients characterized by increased T peripheral helper, activated B, and age‐associated B cells were the most likely to be flaring at baseline, as well as the most likely to remain active or flare over the subsequent year if they acquired or retained this phenotype at follow‐up. In contrast, patients who had increased T helper (Th) cells in the absence of B cell changes, or who had increased Th1 cells and innate immune populations, mostly developed quiescent SLE on follow‐up. A significant proportion of patients with SLE had depletion of many immune populations at flare and only showed increases in these populations post‐flare. Conclusion: Cellular phenotyping of patients with SLE reveals several distinct immunologic profiles that may help to stratify patients with regard to prognosis and treatment. [ABSTRACT FROM AUTHOR]
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- 2024
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14. No Racial Disparities Observed Using Point-of-Care Genetic Counseling and Testing for Endometrial and Ovarian Cancer in a Diverse Patient Population: A Retrospective Cohort Study.
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Kim, Michael, Hayek, Judy, Acker, Cheyenne, An, Anjile, Zhang, Peilin, Gorelick, Constantine, and Kanis, Margaux J.
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CONSENSUS (Social sciences) ,INSURANCE ,RESEARCH funding ,OVARIAN tumors ,GENETIC counseling ,RETROSPECTIVE studies ,TERTIARY care ,DESCRIPTIVE statistics ,RACE ,ENDOMETRIAL tumors ,IMMUNOHISTOCHEMISTRY ,HEALTH equity ,POINT-of-care testing ,FALLOPIAN tubes ,ONCOLOGISTS ,COUNSELING ,GENETIC testing ,MEDICAL referrals - Abstract
Simple Summary: Despite consensus recommendations, national genetic counseling and testing rates for gynecological cancers remain relatively low. Prior studies have also shown that referrals are fewer for people of minority backgrounds. This initial study aimed to determine what genetic counseling and testing rates are found in a diverse patient setting. High rates of genetic counseling and testing are demonstrated, with no racial disparities. Both endometrial and ovarian cancer data are presented simultaneously in a single study in the first of its kind, helping provide a broader combined perspective. Point-of-care genetic counseling and testing by gynecologic oncologists is a strategy that can be similarly adopted at other institutions to potentially reduce disparities. Further studies can identify other factors responsible for the successful counseling and testing rates and how they can be used to broaden the reach of these services at other centers with similar diverse populations. We investigated genetic counseling and testing rates for patients with gynecologic malignancy at a tertiary care center with a large minority population. Our retrospective cohort included newly diagnosed epithelial ovarian, fallopian tube, peritoneal, or endometrial cancer patients between January 2014 and June 2022. For endometrial cancer, 373 patients were identified. A total of 207 (55%) patients were screened using mismatch repair immunohistochemistry (MMR IHC). A total of 82 (40%) had MMR deficiencies on IHC. Of these, 63 (77%) received genetic counseling. A total of 62 (98%) underwent genetic testing, and ultimately, 7 (11%) were diagnosed with Lynch syndrome (LS). The overall rate of LS was 1.9%. MMR IHC testing increased steadily, reaching 100% in 2022. For ovarian cancer, 144 patients were identified. A total of 104 (72%) patients received genetic counseling, and 99 (95%) underwent genetic testing. Rates were not influenced by race, ethnicity, insurance type, or family history of cancer. They were significantly different by cancer stage (p < 0.01). The proportion of patients who received genetic counseling increased from 47% in 2015 to 100% in 2022 (p < 0.01). Most counseling was performed by a gynecologic oncologist (93%) as opposed to a genetic counselor (6.7%). Overall, 12 (8.3%) patients were BRCA+. High rates of counseling and testing were observed with few disparities. [ABSTRACT FROM AUTHOR]
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- 2024
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15. Postoperative Global Period Cost Reduction Using 3 Successive Risk-Stratified Pancreatectomy Clinical Pathways.
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Azimuddin, Ahad, Tzeng, Ching-Wei D., Prakash, Laura R., Bruno, Morgan L., Arvide, Elsa M., Dewhurst, Whitney L., Newhook, Timothy E., Kim, Michael P., Ikoma, Naruhiko, Snyder, Rebecca A., Lee, Jeffrey E., Perrier, Nancy D., Katz, Matthew Hg, and Maxwell, Jessica E.
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- 2024
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16. DeepN4: Learning N4ITK Bias Field Correction for T1-weighted Images.
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Kanakaraj, Praitayini, Yao, Tianyuan, Cai, Leon Y., Lee, Ho Hin, Newlin, Nancy R., Kim, Michael E., Gao, Chenyu, Pechman, Kimberly R., Archer, Derek, Hohman, Timothy, Jefferson, Angela, Beason-Held, Lori L., Resnick, Susan M., Garyfallidis, Eleftherios, Anderson, Adam, Schilling, Kurt G., Landman, Bennett A., and Moyer, Daniel
- Abstract
T1-weighted (T1w) MRI has low frequency intensity artifacts due to magnetic field inhomogeneities. Removal of these biases in T1w MRI images is a critical preprocessing step to ensure spatially consistent image interpretation. N4ITK bias field correction, the current state-of-the-art, is implemented in such a way that makes it difficult to port between different pipelines and workflows, thus making it hard to reimplement and reproduce results across local, cloud, and edge platforms. Moreover, N4ITK is opaque to optimization before and after its application, meaning that methodological development must work around the inhomogeneity correction step. Given the importance of bias fields correction in structural preprocessing and flexible implementation, we pursue a deep learning approximation / reinterpretation of the N4ITK bias fields correction to create a method which is portable, flexible, and fully differentiable. In this paper, we trained a deep learning network "DeepN4" on eight independent cohorts from 72 different scanners and age ranges with N4ITK-corrected T1w MRI and bias field for supervision in log space. We found that we can closely approximate N4ITK bias fields correction with naïve networks. We evaluate the peak signal to noise ratio (PSNR) in test dataset against the N4ITK corrected images. The median PSNR of corrected images between N4ITK and DeepN4 was 47.96 dB. In addition, we assess the DeepN4 model on eight additional external datasets and show the generalizability of the approach. This study establishes that incompatible N4ITK preprocessing steps can be closely approximated by naïve deep neural networks, facilitating more flexibility. All code and models are released at https://github.com/MASILab/DeepN4. [ABSTRACT FROM AUTHOR]
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- 2024
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17. High‐resolution 3‐D scanning electron microscopy (SEM) images of DOTTM polynucleotides (PN): Unique scaffold characteristics and potential applications in biomedicine.
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Kim, Michael James, Park, Hyun‐Jun, Jung, Rae‐Jun, Won, Chee‐Youb, Ohk, Seul‐Ong, Kim, Hong‐Taek, Roh, Nark‐Kyung, and Yi, Kyu‐Ho
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SCANNING electron microscopy ,NUCLEIC acids ,SCANNING electron microscopes ,THEMATIC mapper satellite ,FIELD emission ,METAL coating - Abstract
Introduction: Polynucleotides (PN) are becoming more prominent in aesthetic medicine. However, the structural characteristics of PN have not been published and PN from different companies may have different structural characteristics. This study aimed to elucidate the structural attributes of DOT™ PN and distinguish differences with polydeoxyribonucleotides (PDRN) using high‐resolution scanning electron microscopy (SEM) imaging. Materials and methods: DOT™ PN was examined using a Quanta 3‐D field emission gun (FEG) Scanning Electron Microscope (SEM). Sample preparation involved cryogenic cooling, cleavage, etching, and metal coating to facilitate high‐resolution imaging. Cryo‐FIB/SEM techniques were employed for in‐depth structural analysis. Results: PDRN exhibited an amorphous structure without distinct features. In contrast, DOT™ PN displayed well‐defined polyhedral shapes with smooth, uniformly thick walls. These cells were empty, with diameters ranging from 3 to 8 micrometers, forming a seamless tessellation pattern. Discussion: DOT™ PN's distinct geometric tessellation design conforms to the principles of biotensegrity, providing both structural reinforcement and integrity. The presence of delicate partitions and vacant compartments hints at possible uses in the field of pharmaceutical delivery systems. Within the realms of beauty enhancement and regenerative medicine, DOT™ PN's capacity to bolster cell growth and tissue mending could potentially transform approaches to rejuvenation treatments. Its adaptability becomes apparent when considering its contributions to drug administration and surgical procedures. Conclusion: This study unveils the intricate structural scaffold features of DOT™ PN for the first time, setting it apart from PDRN and inspiring innovation in biomedicine and materials science. DOT™ PN's unique attributes open doors to potential applications across healthcare and beyond. [ABSTRACT FROM AUTHOR]
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- 2024
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18. Prophylactic Antibiotic Duration and Infectious Complications in Pancreatoduodenectomy Patients With Biliary Stents: Opportunity for De-escalation.
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Boyev, Artem, Arvide, Elsa M., Newhook, Timothy E., Prakash, Laura R., Bruno, Morgan L., Dewhurst, Whitney L., Kim, Michael P., Maxwell, Jessica E., Ikoma, Naruhiko, Snyder, Rebecca A., Lee, Jeffrey E., Katz, Matthew H.G., and Tzeng, Ching-Wei D.
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- 2024
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19. A Qualitative Analysis of Medical Student Reflections Following Participation in a Canadian Radiation Oncology Studentship.
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Chai, Brandon S., Giuliani, Meredith, Alfieri, Joanne, Cao, Jeffrey, Bezjak, Andrea, Kim, Michael, Wu, Che Hsuan David, Malik, Nauman, Mak, David Y., and Ingledew, Paris-Ann
- Abstract
Exposure to radiation oncology in medical school curricula is limited; thus, mentorship and research opportunities like the Dr. Pamela Catton Summer Studentship Program attempt to bridge this gap and stimulate interest in the specialty. In 2021, the studentship was redesigned as virtual research, mentorship, and case-based discussions due to the COVID-19 pandemic. This study explores the impact of COVID-19 on the studentship, on students' perceptions of the program, and on medical training and career choice. Fifteen studentship completion essays during 2021–2022 were obtained and anonymized. Thematic analysis was performed to interpret the essays with NVivo. Two independent reviewers coded the essays. Themes were established by identifying connections between coded excerpts. Consensus was achieved through multiple rounds of discussion and iteratively reviewing each theme. Representative quotes were used to illustrate the themes. The themes confirmed the studentship was feasible during the pandemic. Perceived benefits of the program included mentorship and networking opportunities; gaining practical and fundamental knowledge in radiation oncology; developing clinical and research skills; and creating positive attitudes towards radiation oncology and the humanistic aspect of the field. The studentship supported medical specialty selection by helping define student values, shaping perceptions of the specialty, and promoting self-reflection upon students' personal needs. This study informs future iterations of the studentship to promote radiation oncology in Canadian medical school curricula. It serves as a model for studentships in other specialties that have limited exposure and similar challenges with medical student recruitment. [ABSTRACT FROM AUTHOR]
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- 2024
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20. Clinical effects of polynucleotide with hyaluronic acid intradermal injections on facial erythema: Effective redness treatment using polynucleotides.
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Lee, Dongkeun Kenneth, Oh, Myungjune, Kim, Michael James, and Oh, Seung Min
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TOPICAL drug administration ,INTRADERMAL injections ,TREATMENT effectiveness ,CLINICAL trials ,SKIN care ,WRINKLE patterns - Published
- 2024
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21. Recurrent infections drive persistent bladder dysfunction and pain via sensory nerve sprouting and mast cell activity.
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Hayes, Byron W., Choi, Hae Woong, Rathore, Abhay P.S., Bao, Chunjing, Shi, Jianling, Huh, Yul, Kim, Michael W., Mencarelli, Andrea, Bist, Pradeep, Ng, Lai Guan, Shi, Changming, Nho, Joo Hwan, Kim, Aram, Yoon, Hana, Lim, Donghoon, Hannan, Johanna L., Purves, J. Todd, Hughes Jr., Francis M., Ji, Ru-Rong, and Abraham, Soman N.
- Subjects
URINARY tract infections ,MAST cells ,BLADDER diseases ,DISEASE relapse ,NERVE growth factor ,GERMINATION - Abstract
Urinary tract infections (UTIs) account for almost 25% of infections in women. Many are recurrent (rUTI), with patients frequently experiencing chronic pelvic pain and urinary frequency despite clearance of bacteriuria after antibiotics. To elucidate the basis for these bacteria-independent bladder symptoms, we examined the bladders of patients with rUTI. We noticed a notable increase in neuropeptide content in the lamina propria and indications of enhanced nociceptive activity. In mice subjected to rUTI, we observed sensory nerve sprouting that was associated with nerve growth factor (NGF) produced by recruited monocytes and tissue-resident mast cells. Treatment of rUTI mice with an NGF-neutralizing antibody prevented sprouting and alleviated pelvic sensitivity, whereas instillation of native NGF into naïve mice bladders mimicked nerve sprouting and pain behavior. Nerve activation, pain, and urinary frequency were each linked to the presence of proximal mast cells, because mast cell deficiency or treatment with antagonists against receptors of several direct or indirect mast cell products was each effective therapeutically. Thus, our findings suggest that NGF-driven sensory sprouting in the bladder coupled with chronic mast cell activation represents an underlying mechanism driving bacteria-independent pain and voiding defects experienced by patients with rUTI. Editor's summary: Recurrent urinary tract infections (rUTIs) are associated with urinary frequency and chronic pelvic pain, even in the absence of bacteria. Hayes et al. examined mechanisms of rUTI and observed that patient rUTI bladder biopsies had an increase in the neuropeptide substance P (SP) in the lamina propria (layer of bladder made of connective tissue and has blood vessels, nerves, and glands), which indicated an increase in nociceptive sensory nerves (involvedin pain sensing in peripheral tissues like the skin and genito-urinary tract). In a mouse model of rUTIs, bladders showed striking sensory nerve sprouting that was linked to elevated nerve growth factor (NGF) from monocytes and mast cells. NGF was also associated with increased pain and urinary frequency. These findings provide new insights into lingering rUTI symptoms. —Christiana Fogg [ABSTRACT FROM AUTHOR]
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- 2024
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22. Laparoscopic transverse abdominis plane block: how I do it and a cost efficiency analysis.
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Hirata, Yuki, Gottumukkala, Vijaya, Ajith, Jeeva, Schmeisser, Jason A., Ninan, Elizabeth P., Maxwell, Jessica E., Snyder, Rebecca A., Kim, Michael P., Tran Cao, Hop S., Tzeng, Ching-Wei D., Badgwell, Brian D., Katz, Matthew H. G., and Ikoma, Naruhiko
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ANATOMICAL planes ,COST analysis ,PANCREATECTOMY ,LAPAROSCOPIC surgery ,MINIMALLY invasive procedures ,GASTRECTOMY - Abstract
Purpose: To determine the efficacy and efficiency of laparoscopic transverse abdominis plane block (Lap-TAP) in patients undergoing pancreatoduodenectomy and gastrectomy compared to those of ultrasound-guided TAP (US-TAP). Methods: We retrospectively analyzed the records of patients who underwent open or minimally invasive (MIS) pancreatoduodenectomy and major gastrectomy with the use of Lap-TAP or US-TAP at our institution between November 1, 2018, and September 30, 2021. We compared the estimated time and cost associated with Lap-TAP and US-TAP. We also compared postoperative opioid use and pain scores between patients who underwent open laparotomy with these TAPs. Results: A total of 194 patients were included. Overall, 114 patients (59%) underwent pancreatectomy, and 80 patients (41%) underwent gastrectomy. Additionally, 138 patients (71%) underwent an open procedure, and 56 patients (29%) underwent MIS. A total of 102 patients (53%) underwent US-TAP, and 92 (47%) underwent Lap-TAP. The median time to skin incision was significantly shorter in the Lap-TAP group (US-TAP, 59 min vs. Lap-TAP, 45 min; P < 0.001), resulting in an estimated reduction in operation cost by $602. Pain scores and postoperative opioid use were similar between Lap-TAP and US-TAP among open surgery patients, indicating equivalent pain control between Lap-TAP and US-TAP. Conclusion: Lap-TAP was equally effective in pain control as US-TAP after pancreatectomy and gastrectomy, and Lap-TAP can reduce operation time and cost. Lap-TAP is considered the preferred approach for MIS pancreatectomy and gastrectomy, which occasionally needs conversion to laparotomy. [ABSTRACT FROM AUTHOR]
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- 2023
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23. Evaluation and Recalibration of Risk-Stratified Pancreatoduodenectomy Drain Fluid Amylase Removal Criteria.
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Boyev, Artem, Azimuddin, Ahad, Newhook, Timothy E., Maxwell, Jessica E., Prakash, Laura R., Bruno, Morgan L., Arvide, Elsa M., Dewhurst, Whitney L., Kim, Michael P., Ikoma, Naruhiko, Snyder, Rebecca A., Lee, Jeffrey E., Katz, Matthew H. G., and Tzeng, Ching-Wei D.
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AMYLASES ,RECEIVER operating characteristic curves ,PANCREATIC fistula ,REFERENCE values - Abstract
Background: Risk-stratified drain fluid amylase cutoff values for postoperative day 1 (POD1) (DFA1) and POD3 (DFA3) can guide early drain removal after pancreatoduodenectomy (PD). The aim of this study was to evaluate and recalibrate cutoff values instituted in Feb 2019 using a prospective sequential cohort. Methods: We performed a single-institution prospective cohort study of consecutive patients who underwent pancreatoduodenectomy following implementation of institution-specific DFA cutoffs in February 2019 through April 2022. DFA values, drain removal, and clinically relevant postoperative pancreatic fistulas (CR-POPF) were analyzed. Receiver operating characteristic (ROC) curve analysis determined optimal cutoff values. Results: In total, 267 patients, 173 (65%) low-risk and 94 (35%) high-risk, underwent 228 (85%) open and 39 (15%) robotic pancreatoduodenectomies. Seven (4%) low-risk patients and 21 (22%) high-risk patients developed CR-POPF. Drains were removed in 147 (55%) patients before/on POD3, with 1 (0.7%) CR-POPF. In low-risk patients, CR-POPF was excluded with 100% sensitivity if DFA1 < 286 (area under curve, AUC = 0.893, p = 0.001) or DFA3 < 97 (AUC = 0.856, p = 0.002). DFA1 < 137 (AUC = 0.786, p < 0.001) or DFA3 < 56 (AUC = 0.819, p < 0.001) were 100% sensitive in high-risk patients. Previously established DFA1 cutoffs of 100 (low-risk) and < 26 (high-risk) were 100% sensitive, while DFA3 cutoffs of 300 (low-risk) and 200 (high-risk) had 57% and 91% sensitivity. Conclusions: Within a learning health system, we recalibrated post-PD drain removal thresholds to DFA1 ≤ 300 and DFA3 ≤ 100 for low-risk and DFA1 ≤ 100 and DFA3 ≤ 50 for high-risk patients. This methodology is generalizable to other centers for developing institution-specific criteria to optimize safe early drain removal. [ABSTRACT FROM AUTHOR]
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- 2023
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24. Homicides of psychologists, physicians, nurses, pharmacists, social workers, and other health professionals: National Violent Death Reporting System data 2003–2020.
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Robiner, William N., Barnes, Rachel D., Freese, Rebecca L., Palmer, Brooke, and Kim, Michael H.
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MEDICAL personnel ,SOCIAL workers ,VIOLENT deaths ,HOMICIDE rates ,PSYCHOLOGISTS ,PHARMACISTS ,NURSE-physician relationships ,VIOLENCE in the workplace - Abstract
Objective: Homicide is the extreme endpoint along the continuum of interpersonal violence. Violence in healthcare settings and directed toward healthcare workers has been a growing concern. Analysis of health professionals' homicides is needed to inform prevention interventions. Methods: Decedent numbers, age, and sex in the National Violent Death Reporting System are reported for 10 types of health professionals: advance practice registered nurses, dentists, nurses, pharmacists, physicians, physician assistants, psychiatrists, psychologists, social workers, and veterinarians. Results: Between 2003 and 2020, 944 homicides of these professionals were reported to the NVDRS. Nearly 80% of victims were women; 53% of homicides involved guns. Nurses, social workers, physicians, and pharmacists comprised the most victims. In 2020, nurses, social workers, pharmacists, and psychologists had the highest homicide rates relative to their workforce size. Few of these homicides were related to professionals' work. The number of homicides within these professions correlated highly with the size of professions' workforces. Conclusions: Health professionals' homicides constitute a small proportion of US homicides generally at lower rates than seen in the general population. Age is likely one of the protective factors. Future, more comprehensive data will provide greater insights into emerging trends to inform strategies to mitigate homicide risk in health professionals. Prevention needs to go beyond healthcare settings and address societal roots of violence. [ABSTRACT FROM AUTHOR]
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- 2023
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25. Development of Mobile App to Enable Local Update on Mapping API: Construction Sites Monitoring through Digital Twin.
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Valenzuela, Alfredo, Choi, Jongseong Brad, Ortiz, Ricardo, Kang, Byungkon, Kim, Michael, and Kang, Taewook
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MOBILE app development ,BUILDING sites ,DIGITAL twins ,APPLICATION program interfaces ,TERRAIN mapping ,SOCCER fields - Abstract
Unmanned ground vehicles (UGVs) have emerged as a promising solution for reconnaissance missions, overcoming labor cost, frequency, and subjectivity issues associated with manual procedures. However, for dynamic environments such as construction sites, the constantly changing conditions hinder a manager from planning the UGV's paths. For an autonomous monitoring mission, the path planning should be dealt with by having a map with the site's most recent scene. In this study, we develop a mobile app capable of local map updates by overlaying an image on a mapping API (e.g., Google Maps) hence working as a digital twin capable of creating a dynamic representation of the updated terrain over the mapping API. UGV operators can draw a path on such an updated construction scene using a tablet PC or smartphone. Discrete GPS information (e.g., latitudinal, and longitudinal) is executed for the UGV's controller. In the overlaying procedure, the homographic relation between the image and map is automatically computed and then projected. We successfully demonstrated the capabilities of the technique with two construction sites and a soccer field using images from the ground and satellite, respectively. The error generation is quantitatively measured and analyzed. [ABSTRACT FROM AUTHOR]
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- 2023
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26. Intrasellar hemorrhagic chordoma masquerading as pituitary apoplexy: case report and review of the literature.
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Boyi Li, Kim, Michael G., Dominguez, Jose F., Feldstein, Eric, Kleinman, George, Al-Mufti, Fawaz, Kim, Matthew, and Hanft, Simon
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CHORDOMA ,LITERATURE reviews ,CEREBROVASCULAR disease ,SOFT tissue tumors ,MAGNETIC resonance imaging ,SYMPTOMS - Abstract
Background and importance: Chordomas are centrally located, expansile soft tissue neoplasms that arise from the remnants of the embryological notochord. Hemorrhagic presentation is exceedingly rare and can resemble pituitary apoplexy. Moreover, a purely intrasellar location of a chordoma is extremely uncommon. We report a case of a hemorrhagic intrasellar chordoma in an adult male, which presented similarly to pituitary apoplexy and was resolved with surgical resection. Clinical presentation: A 69-year-old male presented with a 4 week history of acute onset headache and concurrent diplopia, with significantly reduced testosterone and slightly reduced cortisol. His left eye demonstrated a sixth cranial nerve palsy. Magnetic resonance imaging of the brain showed a large hemorrhagic mass in the pituitary region with significant compression of the left cavernous sinus and superior displacement of the pituitary gland. The patient underwent an endoscopic endonasal transsphenoidal approach for the resection of the lesion. Near total resection was achieved. Final pathology revealed chordoma with evidence of intratumoral hemorrhage, further confirmed by immunopositive stain for bra-chyury. Post-operatively, the patient had improved diplopia and was discharged home on low dose hydrocortisone. At 3-month follow-up, his diplopia was resolved and new MRI showed stable small residual disease. Conclusions: Apoplectic chordomas are uncommon given chordoma's characteristic lack of intralesional vascularity and represent a diagnostic challenge in the sellar region. Our unique case demonstrates that despite our initial impression of pituitary apoplexy, this was ultimately a case of apoplectic chordoma that responded well to endoscopic endonasal surgery. [ABSTRACT FROM AUTHOR]
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- 2023
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27. Observation on cadavers and through ultrasonography using a 2 mm needle length for intradermal injections.
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Yi, Kyu‐Ho, Lee, Brian, Kim, Michael James, Lee, Seo‐Hyun, Hidajat, Inneke Jane, Lim, Ting Song, Kim, Hyoung Moon, and Kim, Jin‐Hyun
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INTRADERMAL injections ,MEDICAL cadavers ,ULTRASONIC imaging ,NEEDLES & pins ,INJECTIONS - Abstract
Background: An intradermal injection is a medical procedure that involves administering a small amount of medication or substance into the dermal layer of the skin. This research focused on identifying the most suitable injection needle for precise intradermal administration of skin boosters. Methods: The study involved conducting intradermal injections on four cadavers and participants using a 2 mm length, 34‐gauge needle (N‐Finders, Inc., South Korea). During the cadaveric study, the polynucleotide prefilled syringe was dyed green, and an anatomist performed dissections, removing only the skin layer. Ultrasonographic observations were carried out to ensure accurate intradermal injection placement. Results: In all four cadavers, the facial injections at the anterior cheek region were precisely administered intradermally at a 30‐degree injection angle. However, the 90‐degree injection was found just below the dermal layer upon skin layer removal. Discussion: The findings suggest that using a 2 mm needle length allows for easy and convenient intradermal injections. [ABSTRACT FROM AUTHOR]
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- 2023
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28. Bacterial and fungal characterization of pancreatic adenocarcinoma from Endoscopic Ultrasoundguided biopsies.
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Wright, Robin D., Bartelli, Thais F., Baydogan, Seyda, White, James Robert, Kim, Michael P., Bhutani, Manoop S., and McAllister, Florencia
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ADENOCARCINOMA ,NEEDLE biopsy ,PANCREATIC cancer ,SURGICAL excision ,BIOPSY ,PANCREATIC tumors - Abstract
Introduction: The tumor microbiome (TM) has been linked to pancreatic cancer prognosis. Specific microbes can confer tumor resistance to therapies. Early knowledge of the TM at time of diagnosis would be clinically relevant for precision therapy based on microbial composition. However, it is difficult to define the TM prior to surgical resection. Methods: In this pilot feasibility study, patients underwent Endoscopic Ultrasound-Fine Needle Aspiration (EUS-FNA) biopsy of pancreatic adenocarcinoma. These samples were analyzed using 16S rRNA and internal transcribed spacer (ITS) sequencing for characterization of the tumor bacteria and fungi. Result: After in silico decontamination and comparison to non-matched tumor, we were able to characterize the TM in biopsies, which was comparable to the TM from surgical specimens. Discussion: EUS-FNA biopsy may represent a feasible modality to characterize the pancreatic TM prior to surgical resection with proper decontamination strategies and improvements in matched controls. [ABSTRACT FROM AUTHOR]
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- 2023
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29. Postoperative Opioid Use Is Associated with Increased Rates of Grade B/C Pancreatic Fistula After Distal Pancreatectomy.
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Boyev, Artem, Prakash, Laura R., Chiang, Yi-Ju, Childers, Christopher P., Jain, Anish J., Newhook, Timothy E., Bruno, Morgan L., Arvide, Elsa M., Dewhurst, Whitney L., Kim, Michael P., Ikoma, Naruhiko, Lee, Jeffrey E., Snyder, Rebecca A., Katz, Matthew H. G., Tzeng, Ching-Wei D., and Maxwell, Jessica E.
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PANCREATECTOMY ,PANCREATIC fistula ,POSTOPERATIVE care ,OPIOIDS ,REGRESSION analysis ,CASE-control method - Abstract
Background: Clinically relevant postoperative pancreatic fistula (CR-POPF) is a major source of morbidity after distal pancreatectomy. This study examined the association between postoperative opioid use and CR-POPF in the context of opioid-sparing postoperative care. Methods: A case–control study was performed on consecutive patients who underwent distal pancreatectomy between October 2016 and April 2022 at a single institution. Patients who developed CR-POPF were compared to controls. Multivariable regression modeling was used to identify factors associated with CR-POPF. Results: A total of 281 patients underwent 187 open, 20 laparoscopic, and 74 robotic-assisted operations. The rate of CR-POPF was 21% (n = 58). CR-POPF rate declined from 32 to 8% over the study period (p < 0.001). Median oral morphine equivalents (OME) administered on POD 0–1 and 0–3 were 94 and 129 mg, respectively, in patients who did not develop a fistula versus 130 and 180 mg in those who did (both p ≤ 0.001). POD 0–3 OME (OR 1.11, p = 0.044) was independently associated with increased odds of CR-POPF, with each additional 50 mg (equivalent to 10 tramadol pills) increasing the relative risk by 11% and absolute risk by 2%. Conclusion: Early postoperative opioid use after distal pancreatectomy was associated with increased odds of CR-POPF. Decreasing perioperative opioid use through enhanced postoperative management is a low-cost and generalizable approach that may reduce rates of CR-POPF after distal pancreatectomy. [ABSTRACT FROM AUTHOR]
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- 2023
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30. Total Venous Control and Vein-to-the-Right Superior Mesenteric Artery Approach in Robotic Pancreatoduodenectomy.
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Torres, Madeline B., Maxwell, Jessica E., Snyder, Rebecca A., Cao, Hop S. Tran, Kim, Michael P., Tzeng, Ching-Wei D., Lee, Jeffrey E., Katz, Matthew H. G., and Ikoma, Naruhiko
- Abstract
Background: Robotic pancreatoduodenectomy is an increasingly accepted alternative for the treatment of pancreatic ductal adenocarcinoma (PDAC).1 However, the ability to perform a meticulous robotic-assisted superior mesenteric artery (SMA) dissection to obtain a margin-negative resection remains unknown.2 PDAC within the head of the pancreas (HOP) that involves the superior mesenteric vein (SMV) and portal vein (PV) requires total venous control (TVC) and a 'vein-to-the-right' (or anterior artery-first) approach to SMA dissection to minimize venous congestion and operative blood loss.3–5 Here, we demonstrate a robotic pancreatoduodenectomy with TVC and a 'vein-to-the-right' approach. Methods: A 70-year-old woman with cT2N0M0 HOP PDAC with lateral SMV involvement and right gastroepiploic vein occlusion underwent robotic pancreatoduodenectomy after neoadjuvant chemotherapy. After transecting the pancreas, we achieved TVC by dividing the small venous tributaries and encircling the SMV, splenic vein, and PV. We then proceeded with a 'vein-to-the-right' approach. The inferior pancreatoduodenal arteries were divided to minimize HOP inflow and decrease specimen bleeding. Once the specimen was dissected off the periadventitial plane of the distal SMA, the SMV dissection was carefully performed using a partial side-wall vein resection using a vascular stapler. Results: Total operative time was 7.5 h and estimated blood loss was 25 mL. The patient recovered well postoperatively and was discharged on postoperative day 3. Final pathology exhibited a 2.4 cm, moderately to poorly differentiated adenocarcinoma with negative margins (ypT2N1, 2/38 lymph nodes positive). Conclusion: For tumors with lateral vein involvement, robotic pancreatoduodenectomy can be safely performed via TVC and a 'vein-to-the-right' approach. [ABSTRACT FROM AUTHOR]
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- 2024
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31. Health-Related Social Needs, Social Determinants, and Readmissions in Adults With Congenital Heart Disease.
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Kim, Kathryn M., Walters, Ryan W., and Kim, Michael H.
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- 2024
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32. Relationship of health-related social needs, social determinants of health, and catheter ablation utilization in atrial fibrillation: Social needs and application of atrial fibrillation ablation.
- Author
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Holland, Eva M., Dilsaver, Danielle B., Walters, Ryan W., and Kim, Michael H.
- Abstract
This document, titled "Relationship of health-related social needs, social determinants of health, and catheter ablation utilization in atrial fibrillation: Social needs and application of atrial fibrillation ablation," explores the disparities in the utilization of catheter ablation for atrial fibrillation (AF) based on health-related social needs (HRSN) and social determinants of health (SDOH). The study found that individuals with HRSN, such as lower socioeconomic status and limited access to medical care, were less likely to receive AF ablation. Furthermore, patients with HRSN experienced higher rates of readmission, longer hospital stays, and increased hospital costs. The study suggests that further research is needed to address these disparities and improve the management of AF ablation in marginalized populations. [Extracted from the article]
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- 2024
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33. Current practices and perceived effectiveness of polynucleotides for treatment of facial erythema by cosmetic physicians.
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Lee, Dagyeong, Kim, Michael J., Park, Hyun Jun, Rah, Gong Chan, Choi, Hosung, Anh, Sang‐Tae, Ji, Gun Hyon, Kim, Min Seong, Kim, Geebum, Shin, Dong Wook, and Oh, Seung Min
- Subjects
PHYSICIANS ,WOUND healing ,ERYTHEMA ,NUCLEIC acids ,LEGAL evidence ,MEDICAL personnel - Abstract
Background: Polynucleotides (PN) are increasingly used for the treatment of facial erythema in the Republic of Korea. However, there are limited pre‐clinical and clinical data on the efficacy of polynucleotides for facial erythema. In this study, we investigated the current practice and perceived effectiveness of polynucleotide treatment for facial erythema among cosmetic physicians. Methods: By conducting a survey among clinicians who use PN in clinical practice, we explored the current practices and assessed the perceived effectiveness of polynucleotides in treating facial erythema. Results: A total of 557 physicians who used polynucleotides for facial erythema participated in the survey. Polynucleotides were used by 84.4%, 66.4%, and 47.4% of physicians for facial erythema caused by inflammatory facial dermatosis, repeated laser/microneedle radiofrequency, and steroid overuse, respectively. Among those users, 88.1%, 90%, and 83.7% respectively in those same categories answered that polynucleotides were "highly effective" or "effective." Furthermore, they agreed that polynucleotides have the following properties: wound healing/regeneration (95.8%), protection of skin barrier (92.2%), hydration (90.5%), vascular stabilization (81.0%), and anti‐inflammation (79.5%). Conclusion: Our findings showed that cosmetic physicians in the Republic of Korea have used PN as a part of combination treatment for facial erythema resulting from inflammatory facial dermatosis and repeated laser/ microneedle radiofrequency, rather than from steroid overuse. Also, most clinicians agreed that PN was effective for treatment of facial erythema. Given the lack of pre‐clinical and clinical trial evidence, the empirical responses of practicing physicians provide useful information to guide clinical practice and further research. [ABSTRACT FROM AUTHOR]
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- 2023
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34. Elevated Levels of Interferon‐α Act Directly on B Cells to Breach Multiple Tolerance Mechanisms Promoting Autoantibody Production.
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Ferri, Dario M., Nassar, Carol, Manion, Kieran P., Kim, Michael, Baglaenko, Yuriy, Muñoz‐Grajales, Carolina, and Wither, Joan E.
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AUTOANTIBODIES ,IMMUNOLOGICAL tolerance ,FLOW cytometry ,B cells ,IN vivo studies ,CELL culture ,ANIMAL experimentation ,INTERFERONS ,CELLULAR signal transduction ,GENE expression ,ENZYME-linked immunosorbent assay ,SYSTEMIC lupus erythematosus ,POLYMERASE chain reaction ,CARRIER proteins - Abstract
Objective: Elevated levels of serum interferon‐α (IFNα) and the disruption of B cell tolerance are central to systemic lupus erythematosus (SLE) immunopathogenesis; however, the relationship between these 2 processes remains unclear. The purpose of this study was to investigate the impact of elevated IFNα levels on B cell tolerance mechanisms in vivo and determine whether any changes observed were due to the direct effect of IFNα on B cells. Methods: Two classical mouse models of B cell tolerance were used in conjunction with an adenoviral vector encoding IFNα to mimic the sustained elevations of IFNα seen in SLE. The role of B cell IFNα signaling, T cells, and Myd88 signaling was determined using B cell–specific IFNα receptor–knockout, CD4+ T cell–depleted, or Myd88‐knockout mice, respectively. Flow cytometry, enzyme‐linked immunosorbent assay, real‐time quantitative polymerase chain reaction, and cell cultures were used to study the effects of elevated IFNα on the immunologic phenotype. Results: Elevation of serum IFNα disrupts multiple B cell tolerance mechanisms and leads to autoantibody production. This disruption was dependent upon B cell expression of IFNα receptor. Many of the IFNα‐mediated alterations also required the presence of CD4+ T cells as well as Myd88, suggesting that IFNα acts directly on B cells to modify their response to Myd88 signaling and their ability to interact with T cells. Conclusion: The results provide evidence that elevated IFNα levels act directly on B cells to facilitate autoantibody production and further highlight the importance of IFN signaling as a potential therapeutic target in SLE. [ABSTRACT FROM AUTHOR]
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- 2023
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35. Neuroendovascular Surgery Applications in Craniocervical Trauma.
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Kim, Michael, Subah, Galadu, Cooper, Jared, Fortunato, Michael, Nolan, Bridget, Bowers, Christian, Prabhakaran, Kartik, Nuoman, Rolla, Amuluru, Krishna, Soldozy, Sauson, Das, Alvin S., Regenhardt, Robert W., Izzy, Saef, Gandhi, Chirag, and Al-Mufti, Fawaz
- Subjects
VERTEBRAL artery dissections ,SUBDURAL hematoma ,CAROTID artery dissections ,LITERATURE reviews ,PENETRATING wounds ,DISSECTION ,CEREBRAL angiography - Abstract
Cerebrovascular injuries resulting from blunt or penetrating trauma to the head and neck often lead to local hemorrhage and stroke. These injuries present with a wide range of manifestations, including carotid or vertebral artery dissection, pseudoaneurysm, occlusion, transection, arteriovenous fistula, carotid-cavernous fistula, epistaxis, venous sinus thrombosis, and subdural hematoma. A selective review of the literature from 1989 to 2023 was conducted to explore various neuroendovascular surgical techniques for craniocervical trauma. A PubMed search was performed using these terms: endovascular, trauma, dissection, blunt cerebrovascular injury, pseudoaneurysm, occlusion, transection, vasospasm, carotid-cavernous fistula, arteriovenous fistula, epistaxis, cerebral venous sinus thrombosis, subdural hematoma, and middle meningeal artery embolization. An increasing array of neuroendovascular procedures are currently available to treat these traumatic injuries. Coils, liquid embolics (onyx or n-butyl cyanoacrylate), and polyvinyl alcohol particles can be used to embolize lesions, while stents, mechanical thrombectomy employing stent-retrievers or aspiration catheters, and balloon occlusion tests and super selective angiography offer additional treatment options based on the specific case. Neuroendovascular techniques prove valuable when surgical options are limited, although comparative data with surgical techniques in trauma cases is limited. Further research is needed to assess the efficacy and outcomes associated with these interventions. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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36. Bayesian Inventory Control: Accelerated Demand Learning via Exploration Boosts.
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Chuang, Ya-Tang and Kim, Michael Jong
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INVENTORY control ,STATISTICAL learning ,DYNAMIC programming ,TIME perspective ,BANKING industry - Abstract
In the Bayesian newsvendor problem, it is known that the optimal decision is always greater than or equal to the myopic decision. As a result, the optimal decision can be expressed as the sum of the myopic decision plus a nonnegative "exploration boost." In "Bayesian Inventory Control: Accelerated Demand Learning via Exploration Boosts," Chuang and Kim characterize the form of the exploration boost in terms of basic statistical measures of uncertainty. This characterization expresses in clear terms the way in which the statistical learning and inventory control are jointly optimized; when there is a high degree of parameter uncertainty, inventory levels are boosted to induce a higher chance of observing more sales data to more quickly resolve statistical uncertainty, and as parameter uncertainty resolves, the exploration boost is reduced. We investigate Bayesian inventory control problems where parameters of the demand distribution are not known a priori but need to be learned using right-censored sales data. A Bayesian framework is adopted for demand learning, and the corresponding control problem is analyzed via Bayesian dynamic programming (BDP). In the Bayesian setting, it is known that the BDP-optimal decision is equal to the sum of the myopic-optimal decision plus a nonnegative "exploration boost." The goal of this paper is to (i) identify those applications in which adding an exploration boost is important and (ii) characterize the form of the exploration boost. In contrast to recent research that suggests that ignoring the exploration boost (i.e., adopting the myopic policy) can perform reasonably well in certain settings, we show that for applications with moderate time horizons and high parameter uncertainty, the optimality gap between the myopic policy and the BDP-optimal policy can be arbitrarily large and in particular, grows in proportion to the posterior index of dispersion of the unknown mean demand. With regard to characterizing the form of the BDP-optimal exploration boost, we prove that the exploration boost is also proportional to the posterior index of dispersion of the unknown mean demand. This characterization expresses in clear terms the way in which the statistical learning and inventory control are jointly optimized; when there is a high degree of parameter uncertainty (encoded as a large posterior index of dispersion), inventory decisions are boosted to induce a higher chance of observing more sales data so as to more quickly resolve statistical uncertainty (i.e., accelerated demand learning), and to not do so will necessarily lead to poor performance. Funding: The work of Y.-T. Chuang was supported by the Ministry of Science and Technology, Taiwan [Grant MOST 111-2221-E-006-093-MY2] and E.SUN Commercial Bank [E.SUN Academic Award]. The work of M. J. Kim was supported by the Natural Sciences and Engineering Research Council of Canada [NSERC Discovery Grant RGPIN-2015-04019]. Supplemental Material: The e-companion is available at https://doi.org/10.1287/opre.2023.2467. [ABSTRACT FROM AUTHOR]
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- 2023
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37. Polynucleotide injection treatment for iatrogenic fat atrophy in two patients: Potential for safe volumization in aesthetic medicine.
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Kim, Michael James, Park, Hyun‐Jun, Oh, Seung Min, and Yi, Kyu‐Ho
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HYPERTROPHIC scars ,PATIENT safety ,SUBCUTANEOUS injections ,ATROPHY ,INJECTIONS ,IATROGENIC diseases ,FAT - Abstract
Studies on PN have been published previously in the treatment of periorbital rhytides[7] and post-surgery scars[2]; however, this is the first study using PN as a volumizing treatment for fat atrophy in vivo. In addressing iatrogenic subcutaneous fat atrophy, PN injection therapy yielded highly satisfactory outcomes with ease of use, positive patient compliance, and no significant known side effects. High-viscosity PN injections show potential beyond scar treatment, providing robust biomechanical responses via its 3-D scaffold structure which can enhance clinical outcomes. [Extracted from the article]
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- 2023
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38. Can We Identify Why Athletes Fail to Return to Sports After Arthroscopic Bankart Repair? A Systematic Review and Meta-analysis.
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Kim, Michael, Haratian, Aryan, Fathi, Amir, Kim, Daniel R., Patel, Nilay, Bolia, Ioanna K., Hasan, Laith K., Petrigliano, Frank A., and Weber, Alexander E.
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SPORTS participation ,PSYCHOLOGY of athletes ,ONLINE information services ,META-analysis ,CONFIDENCE intervals ,PHOBIAS ,CONFIDENCE ,SHOULDER injuries ,ARTHROSCOPY ,SYSTEMATIC reviews ,JOINT instability ,SPORTS injuries ,CONTINUING education units ,TREATMENT failure ,RISK assessment ,CONTINUING medical education ,DESCRIPTIVE statistics ,MEDLINE ,DATA analysis software ,STATISTICAL models ,WOUNDS & injuries - Abstract
Background: No previous systematic reviews have reported on athletes who fail to return to sports after arthroscopic Bankart repair. Purpose: To review the literature on athletes who fail to return to sports after arthroscopic Bankart repair to determine the rate of athletes who did not return to sports and to identify the specific reasons for failure to return to sports by nonreturning athletes. Study Design: Systematic review and meta-analysis. Methods: A meta-analysis was conducted following the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. Three electronic databases (PubMed, Scopus, Web of Science) were queried for articles meeting the inclusion criteria. Studies were considered eligible only if reporting the rate of failure for return to sports and providing the specific reasons why athletes were unable to return to sports. All records were screened by title, abstract, and full text by 2 authors independently, with any discrepancies resolved by a third senior author. For articles selected for inclusion, data were collected on the number of athletes, average age, average follow-up time, type of sport played, rate of failure to return to sports, and specific reasons for failure to return. A random-effects model was used to conduct the meta-analysis. Results: Seventeen studies were selected for inclusion reporting on a total of 813 athletes. The calculated weighted rate of failure to return to sports after arthroscopic Bankart repair was 15.6% (95% CI, 10.9%-21.1%). A significantly higher proportion of athletes cited shoulder-dependent versus shoulder-independent reasons for failure to return to sports (81.7% vs 18.3%; P <.0001). The most cited reasons for failure to return included recurrent or persistent instability (33.3%), fear of reinjury (17.7%), apprehension (9.9%), changes in priorities or personal interest (8.5%), lack of time (7.1%), and discomfort or pain with sports (6.4%). Conclusion: Our study estimated the rate of failure to return to sports after arthroscopic Bankart repair to be 15.6%, with most athletes citing shoulder-related reasons as the primary factor precluding return. Identifying the potential reasons preventing successful return to sports can guide surgeons in counseling athletes regarding postoperative expectations and addressing hesitations for returning to sports. [ABSTRACT FROM AUTHOR]
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- 2023
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39. Differential Gains in Surgical Outcomes for High-Risk vs Low-Risk Pancreaticoduodenectomy with Successive Refinements of Risk-Stratified Care Pathways.
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Ayabe, Reed I., Prakash, Laura R., Bruno, Morgan L., Newhook, Timothy E., Maxwell, Jessica E., Arvide, Elsa M., Dewhurst, Whitney L., Kim, Michael P., Ikoma, Naruhiko, Snyder, Rebecca A., Lee, Jeffrey E., Katz, Matthew H. G., and Tzeng, Ching-Wei D.
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- 2023
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40. Treatment of an Elusive Symptomatic Sinus Pericranii: Case Report and Review of the Literature.
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Dominguez, Jose F., Shah, Smit, Feldstein, Eric, Ng, Christina, Li, Boyi, Kim, Michael, Santarelli, Justin, Gandhi, Chirag D., Tyagi, Rachana, and Tobias, Michael
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LITERATURE reviews ,CRANIAL sinuses ,NEUROSURGERY ,THERAPEUTICS ,SCALP - Abstract
Sinus pericranii (SP) are abnormal vascular connections between extracranial scalp venous channels and intracranial dural sinuses. This vascular abnormality rarely results in significant sequelae, but in select cases, it can be symptomatic. We describe the case of a 7-year-old girl with an SP who experienced intermittent visual, motor, and sensory symptoms not previously described in the literature. Her symptoms resolved after surgical treatment of the SP. We propose a mechanism for her symptoms and the rationale for the role of neurosurgical intervention along with a review of the literature. [ABSTRACT FROM AUTHOR]
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- 2023
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41. Effects of a Pragmatic Home-based Exercise Program Concurrent With Neoadjuvant Therapy on Physical Function of Patients With Pancreatic Cancer: The PancFit Randomized Clinical Trial.
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Ngo-Huang, An T., Parker, Nathan H., Xiao, Lianchun, Schadler, Keri L., Petzel, Maria Q.B., Prakash, Laura R., Kim, Michael P., Tzeng, Ching-Wei D., Lee, Jeffrey E., Ikoma, Naruhiko, Wolff, Robert A., Javle, Milind M., Koay, Eugene J., Pant, Shubham D., Folloder, Justin P., Wang, Xuemei, Cotto, Alicia M., Ju, Ye Rang, Garg, Naveen, and Wang, Huamin
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- 2023
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42. What does degeneration at the cervicothoracic junction tell us? A kinematic MRI study of 93 individuals.
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Kim, Michael S., Gilbert, Zachary D., Bajouri, Zabi, Telang, Sagar, Fresquez, Zoe, Pickering, Trevor A., Son, Seung Min, Alluri, R. Kiran, Wang, Jeffrey C., and Buser, Zorica
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TRANSLATIONAL motion ,MAGNETIC resonance imaging ,CERVICAL vertebrae ,BONE marrow ,SPINAL surgery ,STATISTICAL association - Abstract
Purpose: Current decision-making in multilevel cervical fusion weighs the potential to protect adjacent levels and reduce reoperation risk by crossing the cervicothoracic junction (C7/T1) against increased operative time and risk of complication. Careful planning is required, and the planned distal and adjacent levels should be assessed for degenerative disc disease (DDD). This study assessed whether DDD at the cervicothoracic junction was associated with DDD, disc height, translational motion, or angular variation in the adjacent superior (C6/C7) or inferior (T1/T2) levels. Methods: This study retrospectively analyzed 93 cases with kinematic MRI. Cases were randomly selected from a database with inclusion criteria being no prior spine surgery and images having sufficient quality for analysis. DDD was assessed using Pfirrmann classification. Vertebral body bone marrow lesions were assessed using Modic changes. Disc height was measured at the mid-disc in neutral and extension. Translational motion and angular variation were calculated by assessing translational or angular motion segment integrity respectively in flexion and extension. Statistical associations were assessed with scatterplots and Kendall's tau. Results: DDD at C7/T1 was positively associated with DDD at C6/C7 (tau = 0.53, p < 0.01) and T1/T2 (tau = 0.58, p < 0.01), with greater disc height in neutral position at T1/T2 (tau = 0.22, p < 0.01), and with greater disc height in extended position at C7/T1 (tau = 0.17, p = 0.04) and at T1/T2 (tau = 0.21, p < 0.01). DDD at C7/T1 was negatively associated with angular variation at C6/C7 (tau = − 0.23, p < 0.01). No association was appreciated between DDD at C7/T1 and translational motion. Conclusion: The association of DDD at the cervicothoracic junction with DDD at the adjacent levels emphasizes the necessity for careful selection of the distal level in multilevel fusion in the distal cervical spine. [ABSTRACT FROM AUTHOR]
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- 2023
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43. Comparative Analyses of the Clinicopathologic Features of Short-Term and Long-Term Survivors of Patients with Pancreatic Ductal Adenocarcinoma Who Received Neoadjuvant Therapy and Pancreatoduodenectomy.
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Liang, Tom Z., Katz, Matthew H. G., Prakash, Laura R., Chatterjee, Deyali, Wang, Hua, Kim, Michael, Tzeng, Ching-Wei D., Ikoma, Naruhiko, Wolff, Robert A., Zhao, Dan, Koay, Eugene J., Maitra, Anirban, Kundu, Suprateek, and Wang, Huamin
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PANCREATIC tumors ,ADENOCARCINOMA ,MULTIVARIATE analysis ,METASTASIS ,LYMPH nodes ,CANCER patients ,DUCTAL carcinoma ,TREATMENT effectiveness ,COMPARATIVE studies ,TUMOR classification ,SURVIVAL analysis (Biometry) ,RESEARCH funding ,COMBINED modality therapy ,LOGISTIC regression analysis ,PANCREATICODUODENECTOMY - Abstract
Simple Summary: In this study, we systematically examined the clinicopathologic characteristics of 60 short-term survivors and 149 long-term survivors and compared them to 352 intermediate-term survivors of pancreatic ductal adenocarcinoma (PDAC) who received NAT and pancreatoduodenectomy. We found that lymph node stage (ypN) was an independent predictor of both short-term and long-term survivors. In addition, tumor differentiation was an independent predictor for short-term survivors, and tumor response grading and perineural invasion were independent predictors for long-term survivors. Our results may help to plan and select post-operative adjuvant therapy for patients with PDAC who received NAT and pancreatoduodenectomy based on the pathologic data. Neoadjuvant therapy (NAT) is increasingly used to treat patients with pancreatic ductal adenocarcinoma (PDAC). Patients with PDAC often show heterogenous responses to NAT with variable clinical outcomes, and the clinicopathologic parameters associated with these variable outcomes remain unclear. In this study, we systematically examined the clinicopathologic characteristics of 60 short-term survivors (overall survival < 15 months) and 149 long-term survivors (overall survival > 60 months) and compared them to 352 intermediate-term survivors (overall survival: 15–60 months) of PDAC who received NAT and pancreatoduodenectomy. We found that the short-term survivor group was associated with male gender (p = 0.03), tumor resectability prior to NAT (p = 0.04), poorly differentiated tumor histology (p = 0.006), more positive lymph nodes (p = 0.04), higher ypN stage (p = 0.002), and higher positive lymph node ratio (p = 0.03). The long-term survivor group had smaller tumor size (p = 0.001), lower ypT stage (p = 0.001), fewer positive lymph nodes (p < 0.001), lower ypN stage (p < 0.001), lower positive lymph node ratio (p < 0.001), lower rate of lymphovascular invasion (p = 0.001) and perineural invasion (p < 0.001), better tumor response grading (p < 0.001), and less frequent recurrence/metastasis (p < 0.001). The ypN stage is an independent predictor of both short-term and long-term survivors by multivariate logistic regression analyses. In addition, tumor differentiation was also an independent predictor for short-term survivors, and tumor response grading and perineural invasion were independent predictors for long-term survivors. Our results may help to plan and select post-operative adjuvant therapy for patients with PDAC who received NAT and pancreatoduodenectomy based on the pathologic data. [ABSTRACT FROM AUTHOR]
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- 2023
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44. Evaluating Changes to the Modified K-Line Using Kinematic MRIs.
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Bajouri, Zabiullah, Telang, Sagar, Fresquez, Zoe, Kim, Michael, Gilbert, Zachary, Pickering, Trevor, Buser, Zorica, Hah, Raymond J., Wang, Jeffrey C., and Alluri, Ram Kiran
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- 2023
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45. Characteristics and Outcomes in Pediatric Versus Adult Craniopharyngiomas: A Systematic Review and Meta-Analysis.
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Pang, Jonathan C., Chung, Dean D., Wang, Jenny, Abiri, Arash, Lien, Brian V., Himstead, Alexander S., Ovakimyan, Andrew, Kim, Michael G., Hsu, Frank P. K., and Kuan, Edward C.
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- 2023
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46. Communicating Development Through US News: Toward Decolonizing "News About Development".
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Kim, Michael Dokyum
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INTERNATIONAL economic assistance ,DECOLONIZATION ,POLITICAL development ,FREEDOM of the press ,CONTENT analysis ,GEOPOLITICS - Abstract
Drawing on a content analysis of 263 news articles on US development assistance from 2011 to 2020 across three US media outlets, the study investigates the media's performance in covering and representing US development assistance to the public. The analysis reveals that the media focus their coverage of US development assistance based on geopolitical interests and high-profile stories of aid, and fail to critically and comprehensively follow up on them after their announcement. The media dominantly portrayed development assistance in terms of materialistic aid, uncritically justified as "doing good," while attributing its de-legitimacy to the recipients' inability and leaving the global North's dysfunctional aid system unquestioned. Such modernistic representation was further supported by the dominance of the Western voice in speaking about what development assistance is and why it matters. To promote better practices for "news about development," the study suggests that journalism should pay critical attention to the political economy of development communication and adopt a postcolonial communication approach to decenter the hegemonic conventions of journalism grounded in Western experiences. [ABSTRACT FROM AUTHOR]
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- 2023
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47. Paramedic to trauma team verbal handover optimization — a complex interaction.
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Cowan, Shaun, Murphy, Patrick, Kim, Michael, Mador, Brett, Chang, Eddie, Kabaroff, Alison, North, Emerson, Cameron, Cheryl, Verhoeff, Kevin, and Widder, Sandy
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EMERGENCY medical technicians ,EMERGENCY medical services ,HOSPITAL personnel - Abstract
Copyright of Canadian Journal of Surgery is the property of CMA Impact Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2023
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48. Prognosticators for Patients with Pancreatic Ductal Adenocarcinoma Who Received Neoadjuvant FOLFIRINOX or Gemcitabine/Nab-Paclitaxel Therapy and Pancreatectomy.
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Tong, Yi Tat, Lai, Zongshan, Katz, Matthew H. G., Prakash, Laura R, Wang, Hua, Chatterjee, Deyali, Kim, Michael, Tzeng, Ching-Wei D., Lee, Jeffrey E., Ikoma, Naruhiko, Rashid, Asif, Wolff, Robert A., Zhao, Dan, Koay, Eugene J., Maitra, Anirban, and Wang, Huamin
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ADENOCARCINOMA ,PANCREATIC tumors ,MULTIVARIATE analysis ,LOG-rank test ,DUCTAL carcinoma ,GEMCITABINE ,PANCREATECTOMY ,T-test (Statistics) ,SURVIVAL analysis (Biometry) ,RESEARCH funding ,DESCRIPTIVE statistics ,KAPLAN-Meier estimator ,COMBINED modality therapy ,PACLITAXEL ,DATA analysis software ,PROPORTIONAL hazards models - Abstract
Simple Summary: This study is to examine the clinical and pathologic characteristics and survival in patients who received neoadjuvant FOLFINOX or neoadjuvant gemcitabine/nab-paclitaxel (GemNP) followed by surgery with curative intent. Our study demonstrated that neoadjuvant FOLFIRINOX treatment is associated with younger age, higher rate of borderline resectable and locally advance disease, higher rate of radiation, lower ypN stage, and higher frequency of complete or near complete pathologic response compared to the GemNP group, but no significant differences in either disease-free survival or overall survival between these two treatment groups. We also demonstrated that multiple pathologic factors, including tumor response group, ypT, ypN, LVI, PNI, and resection margin status, were significant prognostic factors for survival in this group of PDAC patients. In addition, our findings suggest that the tumor size of 1.0 cm is a better cutoff for ypT2 in PDAC patients who received neoadjuvant therapy. Neoadjuvant FOLFIRINOX and gemcitabine/nab-paclitaxel (GemNP) therapies are increasingly used to treat patients with pancreatic ductal adenocarcinoma (PDAC). However, limited data are available on their clinicopathologic prognosticators. We examined the clinicopathologic factors and survival of 213 PDAC patients who received FOLFIRINOX with 71 patients who received GemNP. The FOLFIRINOX group was younger (p < 0.01) and had a higher rate of radiation (p = 0.049), higher rate of borderline resectable and locally advanced disease (p < 0.001), higher rate of Group 1 response (p = 0.045) and lower ypN stage (p = 0.03) than the GemNP group. Within FOLFIRINOX group, radiation was associated with decreased lymph node metastasis (p = 0.01) and lower ypN stage (p = 0.01). The tumor response group, ypT, ypN, LVI and PNI, correlated significantly with both DFS and OS (p < 0.05). Patients with the ypT0/T1a/T1b tumor had better DFS (p = 0.04) and OS (p = 0.03) than those with ypT1c tumor. In multivariate analysis, the tumor response group and ypN were independently prognostic factors for DFS and OS (p < 0.05). Our study demonstrated that the FOLFIRINOX group was younger and had a better pathologic response than the GemNP group and that the tumor response group, ypN, ypT, LVI and PNI, are significant prognostic factors for survival in these patients. Our results also suggest that the tumor size of 1.0 cm is a better cut off for ypT2. Our study highlights the importance of systemic pathologic examination and the reporting of post-treatment pancreatectomies. [ABSTRACT FROM AUTHOR]
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- 2023
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49. Integrated Pathologic Score Effectively Stratifies Patients With Pancreatic Ductal Adenocarcinoma Who Received Neoadjuvant Therapy and Pancreaticoduodenectomy.
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Sohn, Aaron J., Taherian, Mehran, Katz, Matthew H.G., Prakash, Laura R., Chatterjee, Deyali, Wang, Hua, Kim, Michael, Tzeng, Ching-Wei D., Lee, Jeffrey E., Ikoma, Naruhiko, Rashid, Asif, Wolff, Robert A., Zhao, Dan, Koay, Eugene J., Sun, Ryan, Maitra, Anirban, and Wang, Huamin
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- 2023
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50. Comparative analysis of opioid use between robotic and open pancreatoduodenectomy.
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Witt, Russell G., Hirata, Yuki, Prakash, Laura R., Newhook, Timothy E., Maxwell, Jessica E., Kim, Michael P., Tran Cao, Hop S., Lee, Jeffrey E., Vauthey, Jean‐Nicolas, Katz, Matthew H. G., Tzeng, Ching‐Wei D., and Ikoma, Naruhiko
- Abstract
Background/Purpose: Risk‐stratified pancreatectomy clinical pathways using regional anesthesia and multimodality analgesia have decreased overall opioid use, but the additional benefits of robotic surgery in opioid reduction for pancreatoduodenectomy (PD) are unknown. We compared the inpatient opioid use between robotic PD and open PD. Methods: Patients undergoing open PD within a protocol evaluating preincisional regional anesthetic block bundles were compared to consecutively‐treated patients undergoing robotic PD identified from a prospectively maintained single‐institutional database. Clinical characteristics, operative outcomes, pain scores and inpatient oral morphine equivalent (OME) use were compared between patients treated with robotic or open PD. Patients with a history of continuous‐release opioid dependence were excluded. Results: Of 114 total patients, 25 underwent robotic PD and 89 underwent open PD. Intraoperative opioid use was not different (P =.87), nor were cumulative pain scores. Robotic PD patients used significantly fewer OMEs per day on postoperative days 1–4 (P =.039), used fewer total OMEs during hospitalization (robotic: median = 79, IQR 42.5–141; open: median = 126, IQR 61.3–203.8; P =.0036) and were discharged with fewer OMEs (robotic: median = 0, IQR 0–43.8; open: median = 25, IQR 0–75; P =.009) despite a shorter length of stay (robotic: median = 4, open: median = 5, P =.002). Conclusions: Robotic PD patients required fewer inpatient OMEs than open PD while maintaining similar pain scores. A higher percentage of robotic PD patients tapered off of opioids prior to discharge than open surgery patients treated with a standardized opioid reduction protocol despite a shorter length of stay. These results provide a rationale for choosing robotic PD when feasible to minimize opioid use. [ABSTRACT FROM AUTHOR]
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- 2023
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