21 results on '"Sweitzer K"'
Search Results
2. An investigation of high-cycle fatigue models for metallic structures exhibiting snap-through response
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PRZEKOP, A, primary, RIZZI, S, additional, and SWEITZER, K, additional
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- 2008
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3. Significant contributing causes of cancer deaths among Hispanics in Colorado, USA, 1983-1992
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Sweitzer Kimberley and Stallones Lorann
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Neoplasms ,Cause of Death ,Differential Mortality ,Hispanic Americans ,Medicine ,Public aspects of medicine ,RA1-1270 - Abstract
Cancer deaths in the state of Colorado, U.S.A., totaled 53,921 between 1983 and 1992. Death certificates for this period were used to evaluate Hispanic cancer deaths by contributing causes of death and primary occupation of the decedent. The relative risks for diabetes and liver disease as contributing causes of death were significantly higher among Hispanics when compared to non-Hispanics who had also died of cancer (RR for diabetes = 1.90; 95% C.I. (1.64,2.19) and RR for liver disease = 1.44; 95% C.I. (1.23,1.68)). Hispanics who had died of cancer were significantly less likely to have drug abuse as a contributing cause of death when compared to non-Hispanics (RR for drug abuse = 0.69; 95% C.I. (0.52,0.91)). Laborers, service workers, and clerical workers who were Hispanic, were significantly more likely to die of cancer with either diabetes or liver disease as a contributing cause of death than were non-Hispanics in the same occupational category (p
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- 1998
4. The Use of Reinforced Ovine Mesh in Implant Breast Reconstruction: Equivalent Outcomes to Human Acellular Dermal Matrices and More Cost-effective.
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Sweitzer K, Arias-Camison R, Cafro C, and Langstein H
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- Humans, Female, Animals, Sheep, Middle Aged, Breast Implants economics, Adult, Mammaplasty economics, Mammaplasty methods, Retrospective Studies, Cadaver, Treatment Outcome, Breast Neoplasms surgery, Acellular Dermis, Surgical Mesh economics, Cost-Benefit Analysis, Breast Implantation economics, Breast Implantation methods
- Abstract
Purpose: The use of "mesh" in implant-based reconstruction is widespread, with both acellular dermal matrices (ADMs) and extracellular matrices (ECMs) being used, especially in prepectoral device placement. This study compared Ovitex (ovine ECM) versus human cadaveric ADMs to determine safety profiles and cost-effectiveness., Methods: A single surgeon's longitudinal experience with 2-stage, immediate tissue expander breast reconstruction from 2018 to 2023 was analyzed. Patients with AlloDerm and Cortiva (human ADM) were compared with those receiving Ovitex, and 90-day complications were analyzed by chi-squared and analysis of variance. Costs of each mesh were tabulated based on available market data., Results: Patient demographics were comparable. Of 127 patients, 85 received ovine ECM (163 breasts) and 42 received cadaveric ADM (81 breasts). No significant difference between the groups for complications requiring return to the operating room (12.7% ovine vs 14.8% human (P = 0.31) or minor complications (9.8% ovine vs 7.4% human, P = 0.34). There was no difference between reconstructive success and failure between the 2 groups (P = 0.066). The cost of Ovitex was 24%-38% cheaper than Cortiva and AlloDerm, respectively., Conclusions: In this longitudinal, single-surgeon study of 2 different types of meshes in 2-stage expander implant breast reconstruction, we found ovine multilaminated reinforced extracellular matrix (Ovitex) was comparable in outcomes with human acellular dermal matrices (AlloDerm and Cortiva). Ovine mesh was considerably cheaper. Multiple factors determine which mesh should be chosen for implant breast reconstruction. This study supports the use of Ovitex as a cost-effective substitute for human acellular dermal matrices in implant breast reconstruction., Competing Interests: Conflicts of interest and sources of funding: none declared., (Copyright © 2024 The Author(s). Published by Wolters Kluwer Health, Inc.)
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- 2024
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5. Simultaneous Furlow Palatoplasty and Tonsillectomy for the Treatment of Velopharyngeal Insufficiency and Tonsillar Hypertrophy.
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Pencek M, Butterfield J, Escandón JM, Sweitzer K, Smith H, Catanzaro M, Marrinan E, and Morrison C
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- Humans, Female, Retrospective Studies, Male, Child, Postoperative Complications, Palatine Tonsil surgery, Palatine Tonsil pathology, Child, Preschool, Treatment Outcome, Adolescent, Velopharyngeal Insufficiency surgery, Tonsillectomy methods, Cleft Palate surgery, Cleft Palate complications, Hypertrophy
- Abstract
Objective: To determine whether performing tonsillectomy at the time of Furlow palatoplasty for the treatment of cleft palate related velopharyngeal insufficiency (VPI) incurs increased surgical complications or compromises speech outcomes., Design: A retrospective review of patients who had Furlow palatoplasty and the outcomes of surgery in the treatment of cleft palate related VPI., Setting: A single academic center between January 2015 and January 2022., Participants: Patients with submucous cleft (SMC) palate or patients with prior straight line primary palatoplasty presenting with VPI., Interventions: Simultaneous conversion Furlow palatoplasty and tonsillectomy., Main Outcome Measure(s): Primary outcome measures include preoperative and postoperative Modified Pittsburgh Weighted Speech Scale (mPWSS), and postoperative surgical complications., Results: Eight patients (25%) underwent Furlow palatoplasty and concomitant tonsillectomy, while 24 patients (75%) underwent Furlow palatoplasty alone. A significantly lower median postoperative mPWSS score, corresponding to better velopharyngeal function, was reported for patients in the Furlow-tonsillectomy group (0, IQR 0-0) compared to the Furlow only group (1, IQR 0-9, p = 0.046). No surgical complications were encountered in either group. Five patients (20.8%) in the Furlow only group required subsequent surgery for persistent VPI. No patients in the Furlow-tonsillectomy group required additional surgical treatment for VPI (0%, p = 0.16)., Conclusions: Tonsillectomy at time of Furlow palatoplasty is utilized in patients with both VPI and baseline tonsillar hypertrophy to lessen the risk of postoperative obstructive breathing. Tonsillectomy performed concurrently with Furlow palatoplasty is safe, without increased risk of surgical complications, and does not compromise post-Furlow palatoplasty speech outcomes., Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
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- 2024
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6. Innervated breast reconstruction: a narrative review of neurotization techniques and outcomes.
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Escandón JM, Mroueh J, Reid CM, Singh D, Sweitzer K, Ciudad P, Nazerali R, Forte AJ, and Manrique OJ
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Background and Objective: While significant sensation recovery improvements in neurotized breasts following reconstruction have been reported, sensation testing methods and surgical techniques have been widely variable. This narrative review aims to summarize available literature on current neurotization practices and sensory recovery outcomes in patients undergoing innervated breast reconstruction., Methods: A comprehensive literature search of PubMed Medline, Web of Science, and Embase was conducted to identify all studies reporting outcomes of neurotization in breast reconstruction surgeries. Data analyzed included operative times, neurotization techniques, sensory outcomes, and methods as well as patient reported outcomes., Key Content and Findings: Despite the heterogeneity of various studies reviewed, all forms of neurotization achieved earlier and superior sensory recovery throughout the reconstructed breast skin compared to non-innervated breasts. In absence of randomized controlled trials or high-quality comparative studies, further evidence is required to objectively confirm this technique offers better sensory recovery., Conclusions: Neurotization at the time of breast reconstruction may lead to improved sensation and patient reported outcomes delineating improved quality of life compared to non-innervated breasts. Future studies need to standardize the way that breast sensation is measured and determine pre-operative variables leading to expected changes in final sensation recovery to help manage surgical outcome expectations of both the surgeon and the patient., Competing Interests: Conflicts of Interest: All authors have completed the ICMJE uniform disclosure form (available at https://atm.amegroups.com/article/view/10.21037/atm-23-504/coif). The series “Breast Reconstruction” was commissioned by the editorial office without any funding or sponsorship. O.J.M. served as the unpaid Guest Editor of the series and serves as an unpaid editorial board member of Annals of Translational Medicine from July 2022 to June 2024. The authors have no other conflicts of interest to declare., (2024 Annals of Translational Medicine. All rights reserved.)
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- 2024
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7. Needles, Herbs, and Electricity: A Meta-Analysis of Traditional Eastern Medicine in the Management of Facial Paralysis.
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Harsinay A, Patil A, Ali-Khan S, Sweitzer K, and Leckenby JI
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- Humans, Phytotherapy, Electric Stimulation Therapy, Facial Paralysis therapy, Acupuncture Therapy
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In Eastern nations, interventions like acupuncture and herbal medicine are often first-line for patients presenting with facial paralysis. Despite the rising popularity of Eastern medicine in Western nations, the literature assessing whether Eastern medicine interventions should be recommended for patients with facial paralysis is lacking. This meta-analysis aims to define what Eastern medicine interventions exist for the management of facial paralysis and assess whether current research supports these approaches as safe and effective. The PubMed and Cochrane databases were reviewed in accordance with PRISMA guidelines. Inclusion criteria consisted of peer-reviewed studies published between 2000 and 2023 that reported on Eastern medicine, also described as, "complementary" or "alternative" interventions for facial paralysis. Effective and cured rates were the primary outcomes extracted from the literature. Interventions within these studies were categorized into six groups: (1) standard acupuncture, (2) special needle therapies, (3) needle therapy + other alternative treatments, (4) herbal medicine, (5) alternative treatments + Western medicine, and (6) Western medicine alone. A multiple-treatment meta-analysis was performed to assess differences in effective and cured rates. Fifteen studies involving Eastern medicine for the treatment of facial paralysis met the inclusion criteria. No significant differences were found in effective and cured rates across groups. Multiple quality concerns were noted, such as the lack of control groups, blinding, and randomization noted in several studies. Many studies failed to report complications, preventing conclusions from being drawn on the safety of these Eastern medicine interventions. This meta-analysis was unable to support the recommendation of Eastern medicine approaches for patients with facial paralysis. No Eastern medicine treatments, combination of Eastern medicine treatments, or Eastern medicine treatments given with Western medicine were seen to be more effective than Western medicine alone., Competing Interests: J.I.L. serves as a scientific advisor for Solaxa, Inc. No content included in this article relates to this conflict., (Thieme. All rights reserved.)
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- 2024
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8. Current Treatments and Future Directions for Facial Paralysis.
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Leckenby J, Sweitzer K, Olsen T, Mayorga-Young D, Milek D, and Grobbelaar A
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Facial palsy is a condition that affects the facial nerve, the seventh of the 12 cranial nerves. Its main function is to control the muscles of facial expression. This involves the ability to express emotion through controlling the position of the mouth, the eyebrow, nostrils, and eye closure. The facial nerve also plays a key role in maintaining the posture of the mouth and as such, people with facial paralysis often have problems with drooling, speech, and dental hygiene.Due to the devastating effects on the quality of life of individuals with facial palsy, there are a multitude of various treatment options for the paralyzed face. This article reviews current management strategies and points towards promising future directions for research in the field of facial reanimation., Competing Interests: Dr. Leckenby is a scientific advisor for Solaxa Inc. None of the other authors have any conflicts to declare., (Thieme. All rights reserved.)
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- 2024
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9. Hernia Recurrence and Complications After Abdominal Reconstruction With Reinforced Versus Nonreinforced Biologic Mesh.
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Sweitzer K, O'Shea A, Tawil C, Weissberg J, Tomtschik J, Butterfield J, Fowler C, Langstein H, and Bell D
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- Humans, Surgical Mesh, Treatment Outcome, Retrospective Studies, Herniorrhaphy, Recurrence, Hernia, Ventral surgery, Abdominal Wall surgery, Biological Products therapeutic use
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Introduction: Both biologic and permanent (synthetic) meshes are used for abdominal wall reconstruction. Biologic mesh has the advantage of eventual incorporation, which makes it generally preferred in contaminated patients compared with synthetic mesh (Ann Surg. 2013;257:991-996). However, synthetic mesh has been shown to have decreased long-term hernia recurrence despite increased complications (JAMA Surg. 2022;157:293-301). Ovitex (TelaBio, Ltd, Auckland, New Zealand) is a combined reinforced biologic mesh with a permanent Prolene suture weave that theoretically combines incorporation with a long-term strength component. We hypothesize that a reinforced biologic will have a similar complication profile but decreased long-term hernia recurrence., Methods: A single-center retrospective review was performed from January 2013 to January 2022. Baseline patient characteristics and outcomes including 90-day complications and recurrence were compared. Categorical and continuous variables were analyzed with χ2 and Wilcoxon rank sum tests, respectively. Predictors of postoperative complications and hernia recurrence were analyzed via univariate logistic regression and multivariate logistic regression with backward stepwise selection with a threshold of P < 0.2., Results: Two hundred fifty-four patients underwent abdominal wall reconstruction biologic mesh (Strattice, Allergan; FlexHD, MTF Biologics; Alloderm, Allergan; Surgisis Gold, Cook Biotech; Ovitex, Telabio) with retrorectus (66.5%) or intraperitoneal (33.5%) mesh placement. Sixty-six of these used reinforced biologic mesh (Ovitex, TelaBio). Baseline characteristics were comparable including preoperative hernia size measured on CT. The mean follow-up time was 343 days. The majority of patients underwent component separation (80.3% bilateral, 11.4% unilateral, 8.3% none). On univariate analysis, reinforced biologic mesh did not impact 90-day complication rates (P = 0.391) or hernia recurrence rates (P = 0.349). On multivariate analysis, reinforced mesh had no impact on complication or recurrence rates (P > 0.2). A previous history of infected mesh was an independent risk factor for hernia recurrence (P = 0.019). Nonreinforced biologics were more likely to be used in instances of previous mesh infection (P = 0.025), bowel resection (P = 0.026), and concomitantly at the time of stoma takedown (P = 0.04). Reinforced biologics were more likely to be used with a history of previous hernia repair with recurrence not due to infection (P = 0.001). Body mass index >35 was an independent risk factor across both groups for 90-day complications (P = 0.028)., Conclusions: Reinforced versus nonreinforced biologics have similar risk profile and recurrence rate when placed primary fascial repair achieved. In abdominal walls with history of infection, or abdominal wall reconstruction performed concomitantly at the time of stoma takedown or bowel resection/anastomosis, nonreinforced biologics were used more commonly with no difference in negative outcomes. This implies that they may have a role for use in contaminated surgical cases. Reinforced biologics were more commonly used as a mesh choice in the setting of previous hernia repair with recurrence with no difference in outcomes. This implies that the reinforced nature may be useful in situations where extra reinforcement of already traumatized abdominal wall tissue is needed. Retrorectus or intraperitoneal placement of any biologic mesh is acceptable and should be chosen based off surgeon comfort and anticipated cost saving of individual mesh brands. There may be a role for reinforced mesh in the setting of previous failed hernia repair with weakened fascia, as well as nonreinforced in contaminated cases., Competing Interests: Conflicts of interest and sources of funding: H.L. is a consultant for TelaBio and Allergan Corporation. No other authors have a financial disclosure., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2024
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10. Superiorly Based Posterior Pharyngeal Flaps: Using A Care Pathway to Optimize Speech and Airway Outcomes.
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Butterfield J, Pencek M, Sweitzer K, Marrinan E, Connolly H, Neimanis S, and Morrison C
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- Child, Humans, Speech, Retrospective Studies, Critical Pathways, Pharynx surgery, Postoperative Complications epidemiology, Treatment Outcome, Velopharyngeal Insufficiency surgery, Velopharyngeal Insufficiency complications, Sleep Apnea, Obstructive etiology
- Abstract
Background: Pharyngeal flap (PF) surgery is effective at improving velopharyngeal sufficiency, but historical literature shows a concerning prevalence rate of obstructive sleep apnea (OSA), reported as high as 20%. Our institution has developed a protocol to minimize risk of postoperative obstructive complications and increase safety of PF surgery. We hypothesize that (1) preoperative staged removal of significant adenotonsillar tissue along with (2) multiview videofluoroscopy to guide patient-specific surgical approach via appropriately sized PFs can result in excellent speech outcomes while limiting occurrence of OSA., Methods: This was a retrospective chart review of all patients with velopharyngeal insufficiency (VPI) (aged 2-20 years) seen at the University of Rochester from 2015 to 2022 undergoing PF surgery to correct VPI. Nasopharyngoscopy was used for surgical planning and airway evaluation. Patients with tonsillar and adenoid hypertrophy underwent staged adenotonsillectomy at least 2 months before PF. Multiview videofluoroscopy was used to identify anatomic causes of VPI and to determine PF width. Patients underwent polysomnography and speech evaluation before and at least 6 months after PF surgery., Results: Forty-one children aged 8.5 ± 4.1 years (range, 4 to 18 years) who underwent posterior PF surgery for VPI were identified. This included 10 patients with 22q11.2 deletion and 4 patients with Pierre Robin sequence. Thirty-nine patients had both pre- and postoperative speech data and underwent both a pre- and postoperative sleep study. Polysomnography showed no significant difference in obstructive apnea-hypopnea index after posterior PF surgery (obstructive apnea-hypopnea index preop, 1.3 ± 1.2 events per hour; postop, 1.7 ± 2.1 events per hour; P = 0.111). Significant improvements in speech outcome were seen in patients who underwent PF (modified Pittsburgh score preop, 11.52 ± 1.37; postop, 1.09 ± 2.35; P < 0.05)., Conclusions: Use of preoperative staged adenotonsillectomy as well as patient-specific PF dimensions results in effective resolution of VPI and a low risk of OSA., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2024
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11. Plastic Surgery Involvement With Surgical Management of Infected Ventricular Assist Devices Decreased Lifetime Return to Operating Room and 90-Day Infectious Complications.
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Sweitzer K, Fowler C, Butterfield J, Visca A, Mayorga-Young D, Tomtschik J, Arias-Camison R, and Bell D
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- Humans, Retrospective Studies, Operating Rooms, Treatment Outcome, Heart-Assist Devices adverse effects, Surgery, Plastic, Prosthesis-Related Infections etiology, Heart Failure surgery, Heart Failure etiology
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Background: The use of left ventricular assist devices (LVADs) for patients with end-stage cardiac failure awaiting heart transplantation has become increasingly common. However, ventricular assist device-related infections remain a major problem complicating their long-term use. Retrospective review has previously shown a decrease in lifetime return to operating room (RTOR) with no change in 90-day complications when a muscle or omental flap is used for coverage after washout for infection. We wished to determine if early plastic surgery intervention led to a decreased length of stay for these patients., Methods: Patients with LVAD readmitted for LVAD infection at a single institution from 2008 to 2021 were identified using a preexisting database. Patients were followed retrospectively for an average of 3.2 years. Patient demographics, preoperative diagnosis/disease state, type of ventricular assist device inserted, postoperative day of ventricular assist device infection onset, definitive device coverage, timing of coverage procedure after the initial washout for infection, type of flap used for coverage, 90-day complications after definitive coverage, and lifetime return to operating room for infection were reviewed. Comparison analysis with χ2 and analysis of variance testing was used to analyze outcomes., Results: Of 568 patients admitted with an LVAD infection, 104 underwent operative debridement and closure by plastic and reconstructive surgery (PRS) or cardiothoracic surgery (CTS). Fifty-three underwent PRS closure, and 51 underwent CTS closure. There was an increased incidence of diabetes among the PRS group (P < 0.001); otherwise, there was no difference in baseline characteristics. There was increased RTOR over a lifetime with CTS closure compared with PRS (P = 0.03) and increased 90-day risk of infection (P = 0.007). Patients with PRS closure had an increased risk of postoperative hematoma (P = 046). Plastic and reconstructive surgery was typically consulted on hospital day 10. Both PRS and CTS closure patients were discharged on postoperative day 7, on average (P = 0.542)., Conclusions: Plastic surgery involvement with surgical decision making and closure of infected LVAD devices has a decrease in lifetime RTOR and decreased 90-day complications related to infections. There may be a benefit to earlier PRS consultation for coverage assessment., Competing Interests: Conflicts of interest and sources of funding: The authors have no financial disclosures or conflicts of interest related to the article., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2024
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12. Racial, Ethnic, and Socioeconomic Disparities in Burn Care Access: A Single-Center Retrospective Study.
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Tomtschik J, Sweitzer K, Cook C, O'Shea A, and Bell D
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- Humans, Male, Aged, United States, Adult, Female, Retrospective Studies, Socioeconomic Disparities in Health, Healthcare Disparities, Medicare, Burns epidemiology, Burns therapy
- Abstract
While racial, ethnic, and socioeconomic disparities in burn care have been identified in the literature, there is a paucity of research into specific underlying causes of these disparities. Here, we sought to characterize whether time to initial burn consult might contribute to racial, ethnic, and socioeconomic differences in burn care outcomes. We performed a retrospective review of all patients evaluated by the burn surgery service at a single regional ABA-verified burn center between June 2020 and April 2022. Patients without data for the time of onset of burn injury were excluded. Time to burn consult was defined as the time from onset of burn injury to the time of first burn consult. Three hundred and sixty-five patients met the inclusion criteria. Average age was 33.3 years, and 65.8% of patients were male. Average time to burn consult for all patients was 17 hours and 07 minutes. There were no significant differences in this variable among our cohort when stratified by race, ethnicity, or insurance status. Rates of surgical management (Chi-squared P = 0.05) and length of stay (ANOVA P < 0.0001) significantly differed by insurance status, but not among racial or ethnic groups. Medicare patients had the highest rates of surgical intervention and longer hospital stays; patients without insurance had the lowest rates of surgical intervention and shorter hospital stays. These results indicate that time from burn onset to burn consult is unlikely to contribute meaningfully to racial, ethnic, and socioeconomic disparities in burn care. Further studies are needed to better understand other aspects of burn care that may contribute to the noted disparities., (© The Author(s) 2023. Published by Oxford University Press on behalf of the American Burn Association. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
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- 2024
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13. Flap Coverage of Infected Ventricular Assist Devices Influences Patient Outcomes.
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Sweitzer K, Butterfield J, Hubert J, Park W, Tomtschik J, Carter M, Gosev I, and Bell D
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- Humans, Retrospective Studies, Pectoralis Muscles transplantation, Treatment Outcome, Heart-Assist Devices adverse effects, Prosthesis-Related Infections etiology, Prosthesis-Related Infections surgery, Myocutaneous Flap
- Abstract
Background: The use of left ventricular assist devices (LVADs) for patients with end-stage cardiac failure awaiting heart transplantation has become increasingly common. However, ventricular assist device-related infections remain a major problem complicating their long-term use. Poor data exist to determine how to manage these infections after operative debridement., Methods: Patients who underwent insertion of a ventricular assist device and had a subsequent readmission for LVAD infection at the University of Rochester Medical Center from 2012 to 2022 were identified through accessing the medical records archives of the hospital. Patients were followed retrospectively for an average of 3.2 years. Patient demographics, preoperative diagnosis/disease state, type of ventricular assist device inserted, postoperative day of ventricular assist device infection onset, infectious organism identified at initial washout, infectious organism identified at time of definitive device coverage, timing of coverage procedure after the initial washout for infection, type of flap used for coverage, 90-day complications after definitive coverage, and lifetime return to operating room for infection were reviewed. Comparison analysis with a χ 2 test was used to analyze outcomes., Results: Of 568 patients admitted with an LVAD-related infection 117 underwent operative debridement. Of these, 34 underwent primary closure, 31 underwent closure with secondary intention (negative pressure wound therapy with split thickness skin grafting), and 52 were closed with a flap (pectoralis, omental, latissimus, or vertical rectus abdominus musculocutaneous flap). There was a statistically significant higher incidence of return to the operating room (RTOR) for infection over a lifetime with primary closure compared with secondary intention and flap reconstruction ( P = 0.01, 0.02), but no difference in 90-day complications ( P = 0.76, P = 0.58). Eighty-three patients had a positive culture upon definitive coverage with 24 having a postsurgical complication, 15 of which required lifetime RTOR for infection. Thirty four were closed with negative cultures with 9 having a complication and 4 requiring RTOR for infection. This was not statistically significant for complications or RTOR ( P = 0.79, 0.40). Culture data were further substratified into bacterial cultures (n = 73) versus fungal cultures (n = 10), and there was no statistically significant difference between these compared with complications or RTOR ( P = 0.40, 0.39)., Conclusions: Coverage of infected LVADs with locoregional flaps or allowing to granulate using wound vac therapy has a decreased lifetime RTOR for future infections for these patients without increase in 90-day complications. Timing of RTOR should not be impacted by positive cultures provided there is healthy granulation tissue in the wound., Competing Interests: Conflicts of interest and sources of funding: none declared., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2023
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14. Outpatient model for reduced utilization of narcotics following breast reduction.
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Sweitzer K, Patel AU, Wingate NA, Milek D, Escandon J, and Christiano JG
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- Humans, Outpatients, Analgesics, Opioid therapeutic use, Pain, Postoperative drug therapy, Pain, Postoperative prevention & control, Narcotics, Mammaplasty
- Abstract
Competing Interests: Declaration of Competing Interest None declared.
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- 2023
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15. Outcomes Following Use of Negative-Pressure Wound Therapy Over Autologous Meshed and Non-Meshed Skin Grafts.
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Sweitzer K, Tomtschik J, Butterfield J, and Bell D
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- Male, Humans, Adult, Female, Skin Transplantation, Retrospective Studies, Seroma, Negative-Pressure Wound Therapy, Burns surgery
- Abstract
Negative-pressure wound therapy (NPWT) over split thickness skin grafts can control exudate, decrease infection rates, and improve revascularization. However, no study specifically addresses differences in outcomes between meshed/perforated and non-meshed autologous skin grafts dressed with NPWT. Through retrospective chart review, patients undergoing autologous split thickness skin grafting with a NPWT dressing for any burn injury over a 10-month period were identified. Data on etiology, graft take, meshed/perforated or non-meshed graft, graft size, and seroma/hematoma incidence were collected. Our study included 123 patients who had STSG with NPWT and consisted of 57% males, 57% Caucasian, and an average age of 41. Burn injury etiologies consisted of scald (55%), chemical (25%), flame (15%), and contact (5%). Average 2nd degree TBSA in our cohort was 2.34%, 3rd degree TBSA 4.50%, and total TBSA 5.35%. 66.7% of patients received non-meshed grafts, and these patients had an average graft area of 76.5 cm2. 33.3% of patients received meshed grafts, with an average graft area of 163.5 cm2. Non-meshed burn grafts were significantly smaller than meshed grafts (P = .04). There was 100% graft take and 0% seroma/hematoma formation in all patients. Data was analyzed using an unpaired student's T test and ANOVA testing. There were no statistically significant differences in patient demographics, or burn etiology. There exist many options for dressings after repair of burn injuries, each with its own unique advantages. There were, however, no differences in graft take or incidence of seroma/hematoma formation using a NPWT dressing over autologous meshed grafts vs non-meshed grafts. Our data shows that NPWT use as a bolster dressing is safe and efficacious overlying meshed skin grafts and non-meshed grafts., (© The Author(s) 2022. Published by Oxford University Press on behalf of the American Burn Association. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
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- 2023
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16. Subpectoral versus prepectoral two-stage breast reconstruction: A propensity score-matched analysis of 30-day morbidity and long-term outcomes.
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Escandón JM, Sweitzer K, Christiano JG, Gooch JC, Olzinski AT, Prieto PA, Skinner KA, Langstein HN, and Manrique OJ
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- Humans, Female, Retrospective Studies, Propensity Score, Mastectomy methods, Postoperative Complications epidemiology, Postoperative Complications etiology, Morbidity, Breast Neoplasms radiotherapy, Breast Neoplasms surgery, Breast Neoplasms complications, Breast Implantation methods, Breast Implants adverse effects, Mammaplasty methods
- Abstract
Background: Approximately 80% of patients undergoing total mastectomy in the US opt for implant-based breast reconstruction (IBBR). A two-stage reconstruction with tissue expander (TE) remains the most common technique. Since the implementation of ADMs, a prepectoral approach has gained popularity and is becoming the standard of care. Herein, we compared the surgical and postoperative outcomes of prepectoral versus subpectoral two-stage IBBR., Methods: A retrospective chart review was performed between January 2011 and December 2020. We included female patients undergoing immediate two-stage IBBR. The primary outcomes of this study were to compare the 30-day morbidity and the overall rate of complications during the first and second stages of reconstruction, and to compare the time to initiate postmastectomy radiotherapy (PMRT). Propensity score matching was implemented., Results: After matching, 154 reconstructions were analyzed, 77 in each group. The two matched groups exhibited comparable (p > 0.05) characteristics for all analyzed demographic and intraoperative independent variables. Reconstructions in the prepectoral group had a shortened median time for drain removal (13-days vs. 15-days, p = 0.001). The intraoperative expansion volumes were higher in the prepectoral group (300 ml versus 200 ml, p = 0.025). The 30-day morbidity and first- and second-stage complication rates were not significantly different between groups. The time to start postmastectomy radiation therapy (PMRT) was not significantly different between groups (134-days versus 126.5-days, p = 0.58)., Conclusion: Prepectoral and subpectoral TE placement had comparable complication rates during the first and second stages of IBBR. Timing for TE-to-Implant exchange and initiation of PMRT were comparable between the two approaches., Competing Interests: Declaration of Competing Interest The authors certify that they have NO affiliations with or involvement in any organization or entity with any financial interest or non-financial interest (such as personal or professional relationships, affiliations, knowledge, or beliefs) in the subject matter or materials discussed in this manuscript., (Copyright © 2022 British Association of Plastic, Reconstructive and Aesthetic Surgeons. Published by Elsevier Ltd. All rights reserved.)
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- 2023
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17. Calf augmentation and volumetric restoration: A systematic review and meta-analysis.
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Escandón JM, Sweitzer K, Amalfi AN, Mohammad A, Ciudad P, and Manrique OJ
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- Esthetics, Humans, Leg surgery, Prostheses and Implants
- Abstract
Background: Because of the recent attention focused on the aesthetics of the leg, outcomes in the literature are under-reported and require further investigation. We summarized the available evidence on the surgical techniques to augment the volume and dimension of the calf based on clinical outcomes and satisfaction rates., Methods: An electronic search was conducted across PubMed MEDLINE, Web of Science, Scopus, and Ovid MEDLINER(R) in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) statement. Data collection included the patients' characteristics, surgical techniques, and postoperative outcomes. Pooled estimates were calculated with a random-effect meta-analysis using the DerSimonian-Laird model., Results: This review included 48 articles reporting outcomes of 2455 patients. The average age and follow-up were 33.15 years and 33.58 months, respectively. The most common indications for calf augmentation were esthetic concerns (48.7%). Most patients underwent subfascial implant placement (70.2%) followed by fat transfer (17.6%), submuscular implant placement (10.1%). Overall, the pooled satisfaction rate following calf augmentation was 95.4% (95% CI: 93.7%-97%). The pooled satisfaction rate for implant placement and fat transfer was 96.7% (95% CI: 94.4%-97.9%) and 87.2% (95% CI: 78.5%-96%), respectively. The pooled incidence of implant removal was 1.3% (95% CI: 0.7%-2%). The pooled estimate for additional fat grafting procedures following initial fat transfer was 54.1% (95% CI: 38.3%-70%)., Conclusions: While fat transfer has an exceptional safety profile, additional procedures to achieve satisfactory outcomes are usually necessary. Subfascial implant placement provides the best volumetric expansion with a lower implant removal rate and optimal safety profile., Competing Interests: Declaration of Competing Interest Ashley Amalfi, MD is a consultant for Mentor Worldwide, a Johnson & Johnson company. The other authors have no financial interest to declare in relation to the content of this article. All authors have completed the ICMJE uniform disclosure form., (Copyright © 2022 British Association of Plastic, Reconstructive and Aesthetic Surgeons. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
18. Unique presentation of Merkel cell tumour affecting the hand.
- Author
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Tomtschik J, Sweitzer K, and Bell D
- Subjects
- Axilla pathology, Hand pathology, Humans, Lymph Nodes pathology, Male, Carcinoma, Merkel Cell pathology, Carcinoma, Merkel Cell surgery, Skin Neoplasms pathology
- Abstract
Merkel cell carcinoma (MCC) is a rare and highly aggressive skin cancer which most commonly occurs on the head and neck. A limited number of cases of MCC of the hand have been reported in the English literature. We describe a case of MCC of the hand in a man in his late 60s. The lesion presented on the dorsum of the left fifth digit, with metastasis to the left axillary lymph nodes. The primary lesion grew rapidly over a span of 3 months. The patient was treated with two courses of neoadjuvant nivolumab, amputation of the digit and left axillary lymph node resection followed by radiotherapy to the left hand and left axilla. He continues to follow-up for radiotherapy treatment 3 months postoperatively., Competing Interests: Competing interests: None declared., (© BMJ Publishing Group Limited 2022. No commercial re-use. See rights and permissions. Published by BMJ.)
- Published
- 2022
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19. The Biomechanical Properties of Meshed versus Perforated Acellular Dermal Matrices (ADMs).
- Author
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Sweitzer K, Carruthers KH, Blume L, Tiwari P, and Kocak E
- Abstract
Acellular dermal matrices (ADMs) are used for soft tissue augmentation across surgical specialties. Since allograft incorporation depends on direct opposition between the ADM and a vascular bed, seroma formation can be detrimental to incorporation. Since most ADM products are available in many meshed and perforated forms, there is a lack of consistency between manufacture designs. We set out to determine the fluid egress properties and increase in surface area resulting from common cut patterns., Methods: Three ADM cut patterns were studied: 1 meshed and 2 perforated. We calculated the surface area of these modified ADM samples. Fluid was passed through each ADM, and time required for fluid passage was recorded. An ANOVA ( P < 0.05) was used to determine if there was a significant difference in egress properties across the 3 patterns., Results: Meshing in a 1:1 pattern resulted in a 97.50% increase in surface area compared with the uncut product. In comparison, only a 0.30% increase resulted from Perforation Pattern #1 and a 0.59% increase resulted from Perforation Pattern #2. There was a significant difference in egress properties across the three cut patterns ( P = 0.000). The average egress time of Mesh Pattern #1 was 1.974 seconds. The average egress time of Perforation Pattern #2 was 6.504 seconds, and of Perforation Pattern #1 was 10.369 seconds., Conclusions: Quantitative comparison revealed that meshing ADM significantly improves fluid egress and increases the surface area. Therefore, the use of meshed ADM tissue could improve the incorporation of ADM with the recipient, with improved patient outcomes., (Copyright © 2021 The Authors. Published by Wolters Kluwer Health, Inc. on behalf of The American Society of Plastic Surgeons.)
- Published
- 2021
- Full Text
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20. Development of a life events/icon calendar questionnaire to ascertain occupational histories and other characteristics of migrant farmworkers.
- Author
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Zahm SH, Colt JS, Engel LS, Keifer MC, Alvarado AJ, Burau K, Butterfield P, Caldera S, Cooper SP, Garcia D, Hanis C, Hendrikson E, Heyer N, Hunt LM, Krauska M, MacNaughton N, McDonnell CJ, Mills PK, Mull LD, Nordstrom DL, Outterson B, Slesinger DP, Smith MA, Stallones L, Stephens C, Sweeney A, Sweitzer K, Vernon SW, and Blair A
- Subjects
- Adolescent, Adult, Aged, Feasibility Studies, Female, Hispanic or Latino statistics & numerical data, Humans, Life Style, Male, Mental Recall, Middle Aged, Pilot Projects, Risk Factors, United States, Agriculture statistics & numerical data, Employment statistics & numerical data, Epidemiologic Research Design, Surveys and Questionnaires, Transients and Migrants statistics & numerical data
- Abstract
Background: Specialized methods are necessary to collect data from migrant farmworkers for epidemiologic research., Methods: We developed a questionnaire that collected lifetime occupational histories and other lifestyle risk factors via a life events/icon calendar, and administered the questionnaire to a convenience sample of 162 migrant farmworkers in nine areas of the U.S., Results: The average duration of the interviews was about 1 h 30 min, with an average of 45 min for the work history section. The occupational histories covered a median of 27.6 years per person for men and 20.8 years per person for women. The median number of years spent in farm jobs was 11.3 for men and 5.8 for women. The median number of farm jobs (crop/task combination) per person was 59 among men and 27 among women. Many farmworkers performed the same crop/task combinations at multiple times throughout their lives, yielding a median of 13 unique farm jobs and 8 unique crops among men and 7 jobs and 5 crops among women., Conclusions: The project demonstrated that it is feasible to collect detailed work histories and other risk factor data from farmworkers, documented the complexity of work histories encountered among farmworkers, and yielded recommendations for refining a questionnaire that will facilitate future epidemiologic research on farmworkers., (Copyright 2001 Wiley-Liss, Inc.)
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- 2001
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21. Irrigation does not dislodge or destroy tumor cells adherent to the tumor bed.
- Author
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Sweitzer KL, Nathanson SD, Nelson LT, and Zachary C
- Subjects
- Animals, Female, Melanoma, Experimental ultrastructure, Mice, Mice, Inbred C57BL, Microscopy, Electron, Scanning, Neoplasm Recurrence, Local ultrastructure, Postoperative Care, Sodium Chloride, Time Factors, Water, Melanoma, Experimental prevention & control, Neoplasm Recurrence, Local prevention & control, Neoplasm Seeding, Therapeutic Irrigation
- Abstract
Local recurrences in the surgical bed after tumor resection may be due to residual tumor cells "dropping" into the wound. Irrigation with water is often used to remove these cells. We designed experiments to determine whether irrigation would prevent tumor recurrence. Surgical wounds of uniform size in C57BL/6 mice were seeded with 5 x 10(2), 5 x 10(3), 5 x 10(4), 5 x 10(5), or 5 x 10(6) viable syngeneic B16-F10 melanoma cells to test the hypothesis that irrigation with water would decrease local tumor recurrence. The tumor-contaminated wounds were irrigated with distilled water or with saline (0.9% NaCl) immediately or 5, 30, 60, 120, or 240 min after seeding. Control wounds were seeded but not irrigated. The technique of irrigation was altered in a second group of experiments such that the amount of time the tumor cells were exposed to the water or saline was 5, 10, or 15 min. To determine the rapidity and durability of tumor cell attachment to host tissue, 1 x 10(4) viable B16-F10 tumor cells were seeded in vitro onto freshly cut disks of syngeneic mouse dermis. The tissue was irrigated with saline or distilled water 0, 2, 5, 10, 15, 30, 60, 120, or 240 min later. Tumor growth was observed in all the mice and neither the mechanical action of irrigation nor the hypotonic effect of distilled water changed the rate of growth. Scanning electron microscopy (SEM) demonstrated stable and firm attachment to mouse tissue within seconds of seeding with no noticeable dislodgement or cytotoxicity by either saline or water irrigation. The data suggest that the commonly used technique of irrigating the bed of the resected tumor may not be of value in preventing local recurrences.
- Published
- 1993
- Full Text
- View/download PDF
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