One anastomosis gastric bypass as a primary bariatric surgery: MBSAQIP database analysis of short-term safety and outcomes.

BACKGROUND: One anastomosis gastric bypass (OAGB) is described as a simpler, potentially safe, and effective bariatric-metabolic procedure that has been recently endorsed by the American Society of Metabolic and Bariatric Surgery. OBJECTIVES: First, we aim to compare the 30-day outcomes between OAGB and other bypass procedures: Roux-en-Y gastric bypass (RYGB) and single anastomosis duodenoileal bypass with sleeve gastrectomy (SADI-S). Second, identify the odds between postoperative complications and each surgical procedure. METHODS: Patients who underwent primary OAGB, RYGB, and SADI-S were identified using the MBSAQIP database of 2020 and 2021. An analysis of patient demographics and 30-day outcomes were compared between these three bypass procedures. In addition, a multilogistic regression for overall complications, blood transfusions, unplanned ICU admissions, readmission, reoperation, and anastomotic leak stratified by surgical procedure was performed. RESULTS: 1607 primary OAGBs were reported between 2020 and 2021. In terms of patient demographics, patients who underwent RYGB and SADI-S showed a higher incidence of comorbidities. On the other hand, OAGB had shorter length of stay (1.39 ± 1.10 days vs 1.62 ± 1.42 days and 1.90 ± 2.04 days) and operative times (98.79 ± 52.76 min vs 125.91 ± 57.76 min and 139.85 ± 59.20 min) than RYGB and SADI-S. Similarly, OAGB showed lower rates of overall complications (1.9% vs 4.5% and 6.4%), blood transfusions (0.4% vs 1.1% and 1.8%), unplanned ICU admission (0.3% vs 0.8% and 1.4%), readmission (2.4% vs 4.9% and 5.0%), and reoperation (1.2% vs 1.9% and 3.1%). A multilogistic regression analysis was performed, RYGB and SADI-S demonstrated higher odds of 30-day complications. CONCLUSION: The incidence of primary OAGB has increased since its approval by ASMBS, from 0.05% reported between 2015 and 2019 to 0.78% between 2020 and 2021. OAGB had better 30-day outcomes and shorter operative times than RYGB and SADI-S and therefore, could be considered a viable alternative.

Redo fundoplication vs. Roux-en-Y gastric bypass conversion for failed anti-reflux surgery: which is better?

INTRODUCTION: Different techniques have been proposed for reoperation after failed anti-reflux surgery. However, there is no consensus on which should be preferred. We aim to report and compare the outcomes of different revisional techniques for failed anti-reflux surgery. METHODS: We performed a retrospective analysis of patients who underwent redo fundoplication (RF) or Roux-en-Y gastric bypass (RYGB) conversion after a failed fundoplication at our institution between 2016 and 2021. The primary outcome was long-term presence of reflux or dysphagia following revisional surgery. Secondary outcomes included 30-day perioperative complications as well as long-term use of anti-reflux medication and radiographic recurrence of hiatal hernia (HH). RESULTS: A total of 165 (median age 63 years, 73.9% female) patients were included. RF was performed in 120 (73 Toupet and 47 Nissen), RYGB in 38, and 7 patients had fundoplication takedown alone. The RYGB group had a significantly higher BMI, and more prior revisional surgeries compared to the other groups. Median operative time and length of stay were longer for RYGB. Twenty (12.1%) patients experienced postoperative complications, with the highest incidence in the RYGB group. Reflux and dysphagia improved significantly for the whole cohort, with the greatest improvement noted with reflux in the RYGB group (89.5% with preoperative reflux vs. 10.5% with postoperative reflux, p = < .001). On multivariable regression we found that prior re-operative surgery was associated with persistent reflux and dysphagia, whereas RYGB conversion was protective against reflux. CONCLUSION: Conversion to RYGB may offer superior resolution of reflux than RF, especially for obese patients.

Challenges of Revisional Metabolic and Bariatric Surgery: A Comprehensive Guide to Unraveling the Complexities and Solutions of Revisional Bariatric Procedures.

Revisional metabolic and bariatric surgery (RMBS) presents unique challenges in addressing weight loss failure or complications arising from initial bariatric procedures. This review aims to explore the complexities and solutions associated with revisional bariatric procedures comprehensively, offering insights into the evolving terrain of metabolic and bariatric surgery. A literature review is conducted to identify pertinent studies and expert opinions regarding RMBS. Methodological approaches, patient selection criteria, surgical techniques, preoperative assessments, and postoperative management strategies are synthesized to provide a comprehensive overview of current practices and advancements in the field, including institutional protocols. This review synthesizes key findings regarding the challenges encountered in RMBS, including the underlying causes of primary procedure failure, anatomical complexities, technical considerations, and assessments of surgical outcomes. Additionally, patient outcomes, complication rates, and long-term success are presented, along with institutional approaches to patient assessment and procedure selection. This review provides valuable insights for clinicians grappling with the complexities of RMBS. A comprehensive understanding of patient selection, surgical techniques, preoperative management, and postoperative care is crucial for enhancing outcomes and ensuring patient satisfaction in the field of metabolic bariatric surgery.

Impact of Body Mass Index ≥35 kg/m2 on Minimally Invasive Adrenalectomy.

Introduction: Obesity is associated with numerous chronic conditions and an increased risk for surgical complications. Laparoscopic and robotic adrenalectomy have proven effective in the resection of adrenal tumors. This study analyzes the outcomes of severely obese patients (body-mass index [BMI] ≥35 kg/m2) following minimally invasive adrenalectomy. Materials and Methods: A retrospective analysis of patients who underwent minimally invasive adrenalectomy at our institution between 2010 and 2023 was conducted. Two matching analyses were performed. The first analysis compared patients with BMI greater versus lower than 35 kg/m2. The second analysis compared outcomes between robotic and laparoscopic adrenalectomy in patients with a BMI ≥35 kg/m2. Results: A total of 278 patients were included in the study. The median tumor size was 29 mm. Adrenal tumors had similar laterality, and most were hormonally active (66.2%). The most common pathological diagnosis was pheochromocytoma (25.5%). No statistical difference was found in peri- and postoperative outcomes between patients with BMI ≥35 and <35 kg/m2 who underwent minimally invasive adrenalectomy. When the surgical approach was compared in severely obese patients, robotic adrenalectomy was associated with shorter hospital length of stay with similar operative time as the laparoscopic approach. Conclusions: Minimally invasive adrenalectomy is safe and feasible in patients with BMI ≥35 kg/m2. Robotic and laparoscopic approaches are both safe and efficient for the resection of adrenal tumors in severely obese patients.

Do sleeve gastrectomy and Roux-en-Y gastric bypass have different venous thromboembolism risk factors? Creation of 30-day Bariatric Hypercoagulation Score.

BACKGROUND: Venous thromboembolism (VTE) is a major cause of morbidity and mortality after bariatric surgery, most often occurring after discharge within 30 days after surgery. OBJECTIVES: To determine the risk factors associated with VTE after either sleeve gastrectomy (SG) or Roux-en-Y gastric bypass (RYGB) and to develop a Bariatric Hypercoagulation Score (BHS) to predict 30-day adverse postoperative outcomes. SETTING: University hospital. METHODS: Using 2015-2018 data from the Metabolic and Bariatric Surgery Quality Improvement Program, a BHS was created by performing a logistic regression of "venous thromboembolism." The variables with the highest odds ratio (OR) were selected for the SG and RYGB groups. Then, the 30-day outcomes of low-risk (0-1), average-risk (2-3), and high-risk (≥4) BHS were compared. RESULTS: Similar risk factors for VTE were found in both the SG and RYGB groups; the highest OR was shown by history of deep vein thrombosis (SG: 3.54, RYGB: 3.05). Other related factors in both groups were history of pulmonary embolism, prolonged length of stay, Black race, and male sex. Conversely, unique risk factors such as dialysis (OR 1.81) was found in the SG group; meanwhile, prolonged operative time (OR 1.50) and age >60 years (OR 1.28) were for the RYGB group. When comparing the 30-day outcomes, BHS ≥4 had a significantly higher rate of complications (P < .001). CONCLUSIONS: SG and RYGB have some risk factors in common for VTE; however, dialysis was associated only with SG, and prolonged operative time and age >60 years were associated only with RYGB. BHS ≥4 showed higher 30-day adverse outcomes. The VTE-correlated variables require special consideration when assessing patients undergoing SG and RYGB.

Experience of Robotic Complex Revisional Bariatric Surgery in a High-Volume Center.

PURPOSE: A revisional bariatric surgery (RBS) is necessary in about 28% of the patients. The role of robotic surgery in RBS is still a subject of debate. We aim to report the outcomes of robotic-assisted RBS at our institution. MATERIALS AND METHODS: We identified patients who underwent robotic-assisted RBSs between January 1, 2016, and May 31, 2022. We analyzed patient demographics and indications for surgery. Measured outcomes included peri- and postoperative morbidity, comorbidity management, and weight loss outcomes. RESULTS: A total of 106 patients were included. Primary procedures were adjustable gastric band 44 (41.5%), sleeve gastrectomy 42 (39.6%), Roux-en-Y gastric bypass (RYGB) 18 (17%), duodenal switch (DS) 1 (0.9%), and vertical banded gastroplasty 1 (0.9%). RBSs performed included 85 (78.7%) RYGB, 16 (14.8%) redo-gastrojejunostomy, and 5 (4.6%) DS. The median time to revision was 8 (range 1-36) years, and the main indication was insufficient weight loss (49%). Median length of hospital stay was 2 (range 1-16) days, and 9 (8.5%) patients were readmitted during the first 30 days. Only 4 (3.7%) patients had early Clavien-Dindo grade III or higher adverse events. No anastomotic leaks were documented. Median excess weight loss was 35.1%, 42.23%, and 45.82% at the 6-, 12-, and 24-month follow-up. Of 57 patients with hypertension, 29 (50.9%) reduced their medication dosage, and 20/27 (74.1%) reduced their diabetes mellitus medication dosage. Finally, of the 75 patients with symptoms, 64 (85.3%) reported an improvement after the RBS. CONCLUSION: Robotic-assisted RBS is feasible, significantly improves patients' comorbidities and symptoms, and leads to considerable weight loss.

Feasibility and Outcomes of Simultaneous Gastric Bypass with Paraesophageal Hernia Repair in Elderly Patients.

BACKGROUND: Paraesophageal hernias (PEH) have a higher incidence in patients with obesity. Roux-en-Y gastric bypass (RYGB) with concomitant PEH repair is established as a valid surgical option for PEH management in patients with obesity. The safety and feasibility of this approach in the elderly population are not well elucidated. METHODS: We performed a multicenter retrospective cohort study of patients aged 65 years and older who underwent simultaneous PEH repair and RYGB from 2008 to 2022. Patient demographics, hernia characteristics, postoperative complications, and weight loss data were collected. Obesity-related medical conditions' resolution rates were evaluated at the last follow-up. A matched paired t-test and Pearson's test were used to assess continuous and categorical parameters, respectively. RESULTS: A total of 40 patients (82.5% female; age, 69.2 ± 3.6 years; BMI, 39.4 ± 4.7 kg/m2) with a mean follow-up of 32.3 months were included. The average hernia size was 5.8 cm. Most cases did not require mesh use during surgery (92.5%) with only 3 (7.5%) hernial recurrences. Postoperative complications (17.5%) and mortality rates (2.5%), as well as readmission (2.5%), reoperation (2.5%), and reintervention (0%) rates at 30-day follow-up were reported. There was a statistically significant resolution in gastroesophageal reflux disease (p < 0.001), hypertension (p = 0.019), and sleep apnea (p = 0.014). CONCLUSIONS: The safety and effectiveness of simultaneous PEH repair and RYGB are adequate for the elderly population. Patient selection is crucial to reduce postoperative complications. Further studies with larger cohorts are needed to fully assess the impact of this surgery on elderly patients with obesity.

Percutaneous Transseptal Extracorporeal Membrane Oxygenation to Rescue a Failing Right Ventricle in an Animal Model.

OBJECTIVE: We tested the feasibility and effectiveness of a percutaneous atrial transseptal extracorporeal membrane oxygenation (ECMO) cannulation strategy in a right ventricular failure (RVF) model. METHODS: We performed 4 nonsurvival porcine experiments. Percutaneous transseptal access was achieved using a steerable introducer. For guidance, we used fluoroscopy, transesophageal echocardiogram (TEE), and intracardiac echocardiography (ICE). A ProtekDuo rapid deployment cannula (LivaNova, London, UK) was advanced across the septum into the left atrium by 2 to 3 cm. Pulmonary hypertension (PH) was induced by partially clamping the pulmonary artery. ECMO flow was cycled from high (2 to 3 L/min) to low (0.2 to 0.3 L/min) over 2 to 3 hours. RESULTS: Transseptal access using TEE and fluoroscopy was successful in 1 animal and unsuccessful in 1 animal. ICE provided optimal visualization for the remaining 2 animals. Mean arterial pressure (MAP) was associated immediately and consistently with high versus low ECMO flow rate (mean difference: 29 ± 3.1 mm Hg, P = 0.004) but was not restored to baseline values. RV pressure values were dynamic. Given time to equilibrate, mean RV pressure was restored to a baseline level. CONCLUSIONS: Percutaneous right atrium to left atrium transseptal cannulation relieved PH-RVF. MAP was restored to a viable level, and mean RV pressure was restored to a baseline level. Transseptal ECMO shows promise as a cannulation strategy to bridge patients with PH-RVF to lung transplant.

Outcomes of Bariatric Surgery Before, During, and After Solid Organ Transplantation.

BACKGROUND: Bariatric surgery (BS) may help transplant patients by improving their comorbidities and graft function and reducing the recurrence of the disease that led to the transplant. Different timings for BS have been proposed. This study aims to describe the outcomes of BS before, during, and after solid organ transplantation. METHODS: We identified patients with history of solid organ transplantation that underwent BS between January 1, 2012, and April 31, 2022, at our hospital site. We analyzed patients' demographics, obesity-related comorbidities, and transplant history. Measured outcomes included post-operative morbidity; readmission; comorbidity management; weight loss at 6-, 12-, and 24-month follow-up; and survival. RESULTS: Seventy-eight patients were included in our analysis, with a median age of 57 (28-75) years and a median BMI of 40.91 (28.9-61) kg/m2. The most transplanted organ was the liver (53.6%), followed by the kidney (31.9%). Ten patients underwent BS before the transplant, 11 had simultaneous BS and liver transplant, and 57 underwent BS after the transplant. The median operative time, ICU requirement, length of hospital stay, and early post-operative complications were significantly higher in the simultaneous group. The median EBWL% at 6-, 12-, and 24-month follow-up was 47.51%, 57.89%, and 64.22%, respectively, with no significant difference between the three groups. Thirty-four (44.3%) and 40 (50.8%) patients reduced their HTN and DM medication dosage, respectively. One- and five-year survival rates were 98.2% and 87.4%. CONCLUSION: BS before, during, or after solid organ transplant is safe, leads to a significant weight loss and improvement of obesity-related comorbidities, and improves patient's survival.

Cinematic CT as a valuable protocol for severe ECAC.

Expiratory central airway collapse (ECAC) is a pathology gaining recognition in the medical community due to its unspecific symptoms and diagnostic challenges. Its current gold standard for diagnosis, dynamic bronchoscopy, is invasive. Current non-invasive techniques such as computed tomography (CT) protocols have shown limited reproducibility. We present a case of a 77-year-old man with suspected ECAC who underwent evaluation with two different expiratory CT protocols. The initial standard end-expiratory CT could not detect airway collapsibility. However, dynamic bronchoscopy detected severe ECAC. Afterwards, we implemented a novel CT protocol, called dynamic forced expiratory CT (cinematic), comprising detailed, consecutive helical imaging of the central airway throughout the entire respiratory cycle, detecting severe ECAC, as proven by the earlier dynamic bronchoscopy. We hypothesize this may reduce the risks and need for performing multiple invasive procedures such as dynamic bronchoscopy. Extensive studies are required to evaluate the feasibility of its implementation for diagnosing ECAC.

Combined Sleeve Gastrectomy with Liver Transplant in Patients with Obesity: a Feasibility Study.

BACKGROUND: Nonalcoholic steatohepatitis (NASH) associated with obesity is one of the leading causes of liver failure requiring transplant, yet guidelines for the management of obesity in these scenarios are not always followed. In order to decrease incidence of NASH in the new liver, we studied the feasibility of simultaneous liver transplant and bariatric surgery. MATERIALS AND METHODS: We retrospectively identified patients who underwent simultaneous liver transplant and sleeve gastrectomy at our hospital site between November 24, 2019, and April 14, 2022. Demographics, surgical data, postoperative adverse events, and weight loss data were collected. RESULTS: Ten patients met inclusion criteria. Mean body mass index (BMI) at the time of transplant was 43.1 ± 5.3 kg/m2, and mean length of hospital stay was 10.8 ± 5.22 days. Within 30 days after surgery, 7 patients reported adverse effects, and 2 were readmitted. Mean BMI at 6-month follow-up was 30.6 ± 2.5 kg/m2. Mean percentage excess weight (in pounds) loss was 48.1 ± 11.4%, 58.6 ± 8.9%, and 66.1 ± 15.3% at 3-, 6-, and 12-month follow-up, respectively. Three patients had an increase in weight at 12-month follow-up when compared to 6-month follow-up. Most patients required fewer comorbidity-related medications, and none reported adverse effects related to sleeve gastrectomy. CONCLUSIONS: Bariatric surgery at the time of liver transplant is safe and has minimal adverse effects. Results include substantial postoperative weight loss, improvement in comorbidities, and decreased risk of NASH in the new liver. Further studies with larger cohorts are required to confirm the findings of this study.

Missing lung nodule? Intra-operative contingency plan with O-arm imaging: a case report.

Despite the availability of various modalities to locate small non-palpable pulmonary nodules during minimally invasive thoracoscopic surgery, precise lung nodule resection remains a challenge. Pre-operative localization techniques add additional time, expense, and complication rate. Intra-operative localization methods, such as ultrasound, may be a real-time solution, but challenges remain with visualizing deep parenchyma lesions and operator-dependent use. Many thoracoscopic wedge resections are performed using a combination of pre-operative imaging and intra-operative landmarks. Although usually cost and time-efficient, the problem occurs when a wedge resection is performed, and the nodule is not within the specimen. This case report describes the use of the O-arm Surgical Imaging System, a full-rotation imaging system that provides three-dimensional cone-beam imaging, in an 81-year-old male patient with a solid 8 mm left lower lobe lung nodule. After two unsuccessful wedge resections, we used the O-arm and finally resected the nodule with a negative surgical margin. The O-arm provided instant feedback regarding the nodule status, allowing a standard thoracoscopy room to function as a hybrid operating room without the need to reposition the patient. Rather than convert to a thoracotomy, proceed to a larger resection, or experience a missed nodule, the O-arm proved to be a helpful intra-operative tool to find a missing lung nodule.

Assessment of length of stay and cost of minimally invasive versus open thymectomies in patients with myasthenia gravis in Florida.

Background: Thymectomy has become a standard component in treatment for myasthenia gravis. The best surgical approach is still subject to debate. Minimally invasive surgery may have a lower mortality and morbidity rate, improved cosmetic results, and equivalent efficacy at improving neurologic symptoms to open approaches. We compared the perioperative outcomes and cost between the two techniques. Methods: We queried Florida Inpatient Discharge Dataset for patients who underwent thymectomy and had a primary diagnosis of non-thymomatous myasthenia gravis using International Classification of Diseases (ICD)-9 and ICD-10 codes to carry out this retrospective cohort study. The dates ranged between January 1st, 2013, to December 31st, 2018. We compared outcomes of patients who underwent minimally invasive thymectomy versus those who had open thymectomy. Results: An open approach was used in 108 patients, whereas a minimally invasive approach was used in 40 patients. Minimally invasive surgery group had a shorter length of stay (3.0 vs. 6.0 days, P<0.001) and had a non-significant lower total cost ($18.4K vs. $22.1K, P=0.186). After adjusting for age and Elixhauser score, length of stay for minimally invasive group was 32% (P=0.01) lower compared to the open surgery group. Conclusions: Patients who underwent minimally invasive thymectomy for Myasthenia gravis had a significantly shorter length of stay and a lower, although not significant, overall cost.