13 results on '"Zwischenberger, B."'
Search Results
2. Placental site trophoblastic tumor presenting as a friable cervical mass.
- Author
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Zwischenberger, B. A. and Boren, T.
- Subjects
- *
TROPHOBLASTIC tumors , *TOMOGRAPHY , *BIOPSY , *IMMUNOHISTOCHEMISTRY , *HOSPITAL emergency services , *DIAGNOSIS - Abstract
The article presents a case study of a 38-year-old woman with placental site trophoblastic tumor (PSTT) who was presented to the emergency department due to abnormal vaginal bleeding. Based on computed tomography analysis, it found that there was a friable cervical mass within the endometrial cavity and cervix and the immunohistochemical staining was positive for cytokeratin. It states that biopsies and immunohistochemical staining could give correct diagnosis of the disease.
- Published
- 2010
3. Outcomes of Leaflet Resection vs Chordal Replacement for Degenerative Mitral Regurgitation.
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Choi JW, Bishawi M, Zwischenberger B, Gaca J, Carr K, and Glower DD
- Abstract
Background: Debate persists regarding the outcomes of leaflet resection (RESECT) vs chordal replacement (CHORD) for degenerative mitral regurgitation. Our aim was to compare early and late outcomes of the RESECT vs CHORD techniques for degenerative mitral regurgitation., Methods: A total of 1066 consecutive patients undergoing mitral repair for degenerative regurgitation with the RESECT vs CHORD techniques were evaluated from a prospectively maintained database. Propensity score matching was used to compare outcomes in RESECT vs CHORD repairs., Results: Patients who underwent CHORD had later operative dates, more flail leaflet, and more anterior leaflet disease. With the switch to predominant use of the CHORD technique in 2010, the percentage of repair for all degenerative valves improved significantly from 83% to 91% (P = .002). A total of 467 patients were matched for baseline characteristics. Patients in the CHORD group had larger rings (34 mm vs 32 mm; P < .001) and greater use of an Alfieri stitch (66% vs 22%; P < .001) in matched patients. The 10-year survival was similar for matched patients (RESECT vs CHORD, 86% ± 3% vs 84% ± 4%; P = .5).Patients in the RESECT group had a lower 10-year cumulative incidence of mitral reoperation (RESECT vs CHORD, 1% ± 1% vs 8% ± 3%; P = .002) and severe mitral regurgitation (RESECT vs CHORD, 1% ± 1% vs 9% ± 5%; P = .05) compared with matched patients in the CHORD group. The late ejection fraction and mitral gradient were not different between the 2 groups in matched patients, respectively (P = .9 and P = .2, respectively)., Conclusions: The use of the CHORD technique for degenerative mitral regurgitation increased the repair rates, but the CHORD technique had slightly lower repair durability at 10 years compared with the RESECT technique. These results could be related to more complex disease in CHORD group., Competing Interests: Disclosures The authors have no conflicts of interest to disclose., (Copyright © 2024 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.)
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- 2024
- Full Text
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4. Infarct exclusion repair of postmyocardial infarction ventricular septal rupture with a hybrid patch and septal occluder device compared with patch only.
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Williams AR, Moya-Mendez ME, Mehta S, Vekstein A, Harrison JK, Milano CA, Plichta RP, Haney J, Schroder JN, Zwischenberger B, Glower D, and Gaca JG
- Abstract
Objective: We developed a hybrid technique for repairing post-myocardial infarction (MI) ventricular septal defect (VSD) that combines infarct exclusion with patch and a nitinol-mesh septal occluder device (SOD) to provide a scaffold to support the damaged septal wall. Here, we compare outcomes of patients with post-MI VSD repaired using patch only or hybrid patch/SOD., Methods: Patients undergoing post-MI VSD repair at our institution from 2013 to 2022 who received patch alone or patch/SOD repair were analyzed. Primary outcome was survival to hospital discharge. Clinical outcomes and echocardiograms were also analyzed., Results: Over a 9-year period, 24 patients had post-MI VSD repair at our institution with either hybrid patch/SOD (n = 10) or patch only repair (n = 14). VSD size was 18 ± 5.8 mm for patch/SOD and 17 ± 4.6 mm for patch only. In the patch/SOD repair cohort, average size of SOD implant was 23.6 ± 5.6 mm. Mild left ventricular dysfunction was present prerepair and was unchanged postrepair in both groups; however, moderate-to-severe right ventricular (RV) dysfunction was common in both groups before repair. RV function worsened or persisted as severe in 10% of hybrid versus 54% of patch-only patients postrepair. Tricuspid annular systolic excursion and RV:left ventricle diameter ratio, quantitative metrics of RV function, improved after patch/SOD repair. No intraoperative mortality occurred in either group. Postoperative renal, hepatic, and respiratory failure requiring tracheostomy was common in both groups. Survival to hospital discharge in both cohorts was 70%., Conclusions: Post-MI VSD repair with patch/SOD has comparable short-term outcomes with patch alone. Addition of a SOD to patch repair provides a scaffold that may enhance the repair of post-MI VSD with patch exclusion.
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- 2023
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5. Optimal circulatory arrest temperature for aortic hemiarch replacement with antegrade brain perfusion.
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Seese L, Chen EP, Badhwar V, Thibault D, Habib RH, Jacobs JP, Thourani V, Bakaeen F, O'Brien S, Jawitz OK, Zwischenberger B, Gleason TG, Sultan I, Kilic A, Coselli JS, Svensson LG, Chikwe J, and Chu D
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- Adult, Humans, Temperature, Treatment Outcome, Retrospective Studies, Perfusion adverse effects, Brain, Aortic Aneurysm, Thoracic diagnostic imaging, Aortic Aneurysm, Thoracic surgery, Heart Arrest
- Abstract
Objective: This study sought to identify the optimal temperature for moderate hypothermic circulatory arrest in patients undergoing elective hemiarch replacement with antegrade brain perfusion., Methods: The Society of Thoracic Surgeons adult cardiac surgery database was queried for elective hemiarch replacements using antegrade brain perfusion for aneurysmal disease (2014-2019). Generalized estimating equations and restricted cubic splines were used to determine the risk-adjusted relationships between temperature as a continuous variable and outcomes., Results: Elective hemiarch replacement with antegrade brain perfusion occurred in 3898 patients at 374 centers with a median nadir temperature of 24.9°C (first quartile, third quartile = 22.0°C, 27.5°C) and median circulatory arrest time of 19 minutes (first quartile, third quartile = 14.0 minutes, 27.0 minutes). After adjustment for comorbidities, circulatory arrest time, and individual surgeon, patients cooled between 25 and 28°C had an early survival advantage compared with 24°C, whereas those cooled between 21 and 23°C had higher risks of mortality compared with 24°C. A nadir temperature of 27°C was associated with the lowest risk-adjusted odds of mortality (odds ratio, 0.62; 95% confidence interval, 0.42-0.91). A nadir temperature of 21°C had the highest risk of mortality (odds ratio, 1.4; 95% confidence interval, 1.13-1.73). Risk of experiencing a major morbidity was elevated in patients cooled between 21 and 23°C, with the highest risk occurring in patients cooled to 21°C (odds ratio, 1.12; 95% confidence interval, 1.01-1.24)., Conclusions: For patients with aneurysmal disease undergoing elective hemiarch with antegrade brain perfusion, circulatory arrest with a nadir temperature of 27°C confers the greatest early survival benefit and smallest risk of postoperative morbidity., (Copyright © 2021 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.)
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- 2023
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6. Outcomes of acute type A aortic dissection during the COVID-19 pandemic: An analysis of the Society of Thoracic Surgeons Database.
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Arnaoutakis GJ, Wallen TJ, Desai N, Martin TD, Thourani VH, Badhwar V, Wegerman ZK, Young R, Grau-Sepulveda M, Zwischenberger B, Beaver TM, Jacobs JP, and Sultan I
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- Adult, Humans, United States epidemiology, Pandemics, Treatment Outcome, Retrospective Studies, COVID-19 epidemiology, Aortic Dissection epidemiology, Aortic Dissection surgery, Surgeons
- Abstract
Purpose: There have been reported reductions of hospital presentation for acute cardiovascular conditions such as myocardial infarction and acute type A aortic dissection (ATAAD) in the United States during the COVID-19 pandemic. This study examined presentation patterns and outcomes of ATAAD in North America immediately before, and during, the COVID-19 pandemic., Methods: The Society of Thoracic Surgeons Adult Cardiac Surgery Database (STS ACSD) was queried to identify patients presenting with ATAAD in the 12 months pre-pandemic (March 2019-February 2020), and during the early pandemic (March through June 2020). Demographics and operative characteristics were compared using χ² test and Wilcoxon Rank-sum test. The median annual case volume designated low-volume centers versus high-volume centers (>10 cases per month). Step-wise variable selection was used to create a risk set used for adjustment of all multivariable models., Results: There were 5480 patients identified: 4346 pre-pandemic and 1134 during pandemic. There was significantly lower volume of median cases per month during the COVID-19 pandemic period (286 interquartile range [IQR]: 256-306 vs. 372 IQR: 291-433,p = .0152). In historically low-volume centers (<10 cases per year), there was no difference in volume between the two periods (142 IQR: 133-166 vs. 177 IQR: 139-209, p = NS). In high-volume centers, there was a decline during the pandemic (140 IQR: 123-148 vs. 212 IQR: 148-224, p = .0052). There was no difference in overall hospital-to-hospital transfers during the two time periods (54% of cases pre-pandemic, 55% during). Patient demographics, operative characteristics, malperfusion rates, and cardiac risk factors were similar between the two time periods. There was no difference in unadjusted operative mortality (19.01% pre-pandemic vs. 18.83% during, p = .9) nor major morbidity (52.42% pre-pandemic vs. 51.24% during, p = .5). Risk-adjusted multivariable models showed no difference in either operative mortality nor major morbidity between time periods., Conclusions: For patients presenting to the hospital with ATAAD during the first surge of the pandemic, operative outcomes were similar to pre-pandemic despite a 30% reduction in volume. Out-of-hospital mortality from ATAAD during the pandemic remains unknown. Further understanding these findings will inform management of ATAAD during future pandemics., (© 2022 Wiley Periodicals LLC.)
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- 2022
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7. Sustained results of robotic mitral repair in a lower volume center with extensive minimally invasive mitral repair experience.
- Author
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Barac YD, Loungani RS, Sabulsky R, Carr K, Zwischenberger B, and Glower DD
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- Aged, Humans, Male, Middle Aged, Mitral Valve surgery, Retrospective Studies, Treatment Outcome, Mitral Valve Insufficiency surgery, Robotic Surgical Procedures methods, Robotics
- Abstract
The literature for robotic mitral repair is dominated by a small number of large volume institutions, and intermediate-term outcomes out to 5 years are rare. Whether and under what circumstances a lower volume institution could obtain durable outcomes is not known. A retrospective review was performed on all 133 patients undergoing robotically assisted mitral repair from 2011 to 2019 at a single institution. Mean volume of robotic mitral repair was 16 ± 7 cases per year, while mean institutional total volume of mitral repair was 116 ± 16 cases per year. Mean age was 58 ± 12 years, 77% were men, and mitral etiology was prolapse in 90%. Comorbidity was infrequent with atrial fibrillation in 20% and moderate tricuspid regurgitation in 14%. Central aortic cannulation was used in 97% with concurrent tricuspid operation in 5% and concurrent maze in 14%. Median clamp time, pump time, and length of stay were 146 min, 265 min, and 5 days, respectively, but none improved with experience. There were no deaths or stroke. At 5 years, the cumulative incidence of moderate mitral regurgitation was 18 ± 6% (prolapse patients 11 ± 5%), severe regurgitation 4 ± 3%, and mitral replacement 9 ± 5% (prolapse patients 5 ± 3%). 5-year survival was 96 ± 3%. At centers with significant mitral repair volume, a volume of 16 robotic mitral cases/year can yield good clinical outcomes durable out to 5 years. A case volume of 16 cases per year was not sufficient to improve pump time or length of stay over time., (© 2021. The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature.)
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- 2022
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8. Reply: When Will We Stop Debating on the Value of TEE in CABG?
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Metkus TS, Grant MC, Zwischenberger B, and Higgins R
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- Humans, Coronary Artery Bypass, Echocardiography, Transesophageal
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- 2021
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9. Transesophageal Echocardiography in Patients Undergoing Coronary Artery Bypass Graft Surgery.
- Author
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Metkus TS, Thibault D, Grant MC, Badhwar V, Jacobs JP, Lawton J, O'Brien SM, Thourani V, Wegermann ZK, Zwischenberger B, and Higgins R
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- Aged, Humans, Middle Aged, Postoperative Complications epidemiology, Retrospective Studies, United States epidemiology, Coronary Artery Bypass mortality, Echocardiography, Transesophageal statistics & numerical data
- Abstract
Background: The impact of utilization of intraoperative transesophageal echocardiography (TEE) at the time of isolated coronary artery bypass grafting (CABG) on clinical decision making and associated outcomes is not well understood., Objectives: The purpose of this study was to determine the association of TEE with post-CABG mortality and changes to the operative plan., Methods: A retrospective cohort study of planned isolated CABG patients from the Society of Thoracic Surgeons Adult Cardiac Surgery Database between January 1, 2011, and June 30, 2019, was performed. The exposure variable of interest was use of intraoperative TEE during CABG compared with no TEE. The primary outcome was operative mortality. The association of TEE with unplanned valve surgery was also assessed., Results: Of 1,255,860 planned isolated CABG procedures across 1218 centers, 676,803 (53.9%) had intraoperative TEE. The percentage of patients receiving intraoperative TEE increased over time from 39.9% in 2011 to 62.1% in 2019 (p trend <0.0001). CABG patients undergoing intraoperative TEE had lower odds of mortality (adjusted odds ratio: 0.95; 95% confidence interval: 0.91 to 0.99; p = 0.025), with heterogeneity across STS risk groups (p interaction = 0.015). TEE was associated with increased odds of unplanned valve procedure in lieu of planned isolated CABG (adjusted odds ratio: 4.98; 95% confidence interval: 3.98 to 6.22; p < 0.0001)., Conclusions: Intraoperative TEE usage during planned isolated CABG is associated with lower operative mortality, particularly in higher-risk patients, as well as greater odds of unplanned valve procedure. These findings support usage of TEE to improve outcomes for isolated CABG for high-risk patients., Competing Interests: Funding Support and Author Disclosures Dr Metkus has received salary support from the National Institutes of Health–funded Institutional Career Development Core at Johns Hopkins (project number 5KL2TR003099-02). Dr Grant has received salary support from the Agency for Healthcare Research and Quality (AHRQ), U.S. Department of Health and Human Services (contract number HHSP233201500020I). All other authors have reported that they have no relationships relevant to the contents of this paper to disclose., (Copyright © 2021 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.)
- Published
- 2021
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10. Robotic versus port-access mitral repair: A propensity score analysis.
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Barac YD, Loungani RS, Sabulsky R, Zwischenberger B, Gaca J, Carr K, and Glower DD
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- Female, Humans, Male, Middle Aged, Propensity Score, Retrospective Studies, Treatment Outcome, Mitral Valve surgery, Mitral Valve Insufficiency surgery, Robotic Surgical Procedures
- Abstract
Background: Port-access (PORT) and robotic (ROBO) mitral repair are well established, but differences in patient selection and outcomes are not well documented., Methods: A retrospective analysis was performed on 129 ROBO and 628 PORT mitral repairs at one institution. ROBO patients had 4 cm nonrib spreading incisions with robotic assistance, while PORT patients had 6-8 cm rib spreading incisions with thoracoscopic assistance. Propensity score analysis matched patients for differences in baseline characteristics., Results: Unmatched ROBO patients were younger (58 ± 11 vs. 61 ± 13, p = .05), had a higher percentage of males (77% vs. 63%, p = .003) and had less NYHA Class 3-4 symptoms (11% vs. 21%, p < .01), less atrial fibrillation (19% vs. 29%, p = .02) and less tricuspid regurgitation (14% vs. 24%, p = .01). Propensity score analysis of matched patients showed that pump time (275 ± 57 vs. 207 ± 55, p < .0001) and clamp time (152 ± 38 vs. 130 ± 34, p < .0001) were longer for ROBO patients. However, length of stay, postoperative morbidity, and 5-year survival (97 ± 1% vs. 96 ± 3%, p = .7) were not different. For matched patients with degenerative valve disease, 5-year incidence of mitral reoperation (3 ± 2% vs. 1 ± 1%), severe mitral regurgitation (MR) (6 ± 4% vs. 1 ± 1%), or ≥2 + MR (12 ± 5% vs. 12 ± 4%), were not significantly different between ROBO versus PORT approaches. Predictors of recurrent moderate MR were connective tissue disease, functional etiology, and non-White race, but not surgical approach., Conclusions: In this first comparison out to 5 years, robotic versus port-access approach to mitral repair had longer pump and clamp times. Perioperative morbidity, 5-year survival, and 5-year repair durability were otherwise similar., (© 2021 Wiley Periodicals LLC.)
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- 2021
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11. Key methodological choices determine the results of randomized trials in cardiac surgery: Every trial is perfectly designed to get the results it gets.
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Gaudino M and Zwischenberger B
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- Humans, Randomized Controlled Trials as Topic, Research Design, Cardiac Surgical Procedures
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- 2020
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12. Using a Regent Aortic Valve in a Small Annulus Mitral Position Is a Viable Option.
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Barac YD, Zwischenberger B, Schroder JN, Daneshmand MA, Haney JC, Gaca JG, Wang A, Milano CA, and Glower DD
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- Aged, Female, Humans, Male, Middle Aged, Mitral Valve Insufficiency diagnostic imaging, Mitral Valve Insufficiency pathology, Mitral Valve Stenosis diagnostic imaging, Mitral Valve Stenosis pathology, Prosthesis Design, Retrospective Studies, Treatment Outcome, Heart Valve Prosthesis, Heart Valve Prosthesis Implantation, Mitral Valve Insufficiency surgery, Mitral Valve Stenosis surgery
- Abstract
Background: Outcome of mitral valve replacement in extreme scenarios of small mitral annulus with the use of the Regent mechanical aortic valve is not well documented., Methods: Records were examined in 31 consecutive patients who underwent mitral valve replacement with the use of the aortic Regent valve because of a small mitral annulus., Results: Mean age was 60 ± 14 years. Mitral stenosis or mitral annulus calcification was present in 30 of 31 patients (97%). Concurrent procedures were performed in 17 of 31 patients (55%). Median valve size was 23 mm. Mean mitral gradient coming out of the operating room was 4.2 ± 1.5 mm Hg and at follow-up echocardiogram performed at a median of 32 months after the procedure was 5.8 ± 2.4 mm Hg., Conclusions: A Regent aortic mechanical valve can be a viable option with a larger orifice area than the regular mechanical mitral valve in a problematic situation of a small mitral valve annulus. Moreover, the pressure gradients over the valve are acceptable intraoperatively and over time., (Copyright © 2018 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.)
- Published
- 2018
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13. A comparison of the nutritional adequacy of home-prepared and commercial diets for dogs.
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Streiff EL, Zwischenberger B, Butterwick RF, Wagner E, Iben C, and Bauer JE
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- Amino Acids administration & dosage, Animals, Calcium administration & dosage, Fatty Acids administration & dosage, Phosphorus administration & dosage, Animal Feed, Animal Nutritional Physiological Phenomena, Diet, Dogs metabolism, Nutritional Requirements
- Published
- 2002
- Full Text
- View/download PDF
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