Publications by authors named "Schiesser M"

Purpose: The laparoscopic Roux-en-Y gastric bypass (LRYGB) is one of the standard procedures in metabolic surgery. Different limb lengths have been proposed in the past to maximize weight loss (WL) and reduce metabolic complications. Distal gastric bypass surgery with a very short common channel (CC) (up to 100 cm) has been often criticized due to frequent side effects such as malnutrition, bone weakening and short-bowel syndrome.

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Article Synopsis
  • - The study explores how liver growth behaves after a procedure called ALPPS (associating liver partition and portal vein ligation for staged hepatectomy) by using MRI with a contrast agent (gadoxetic acid) to measure liver volume and function in Wistar rats.
  • - Rats were divided into three groups: ALPPS, major liver resection (LR), and portal vein ligation (PVL), and their liver volume and function were tracked for five days post-surgery.
  • - The results showed that liver function increased more than volume in the ALPPS and LR groups after the first day, with total liver function remaining well above 60% of pre-op values for ALPPS and PVL
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Article Synopsis
  • - Liver resections are vital for treating liver cancers, but many patients aren't resectable due to the risk of post-hepatectomy liver failure, as only about 70% of liver tissue can be safely removed.
  • - Regenerative liver surgery techniques, like portal vein embolization (PVE) and the newer Associating Liver Partition and Portal vein ligation for Staged hepatectomy (ALPPS), have evolved to increase the amount of healthy liver left after surgery, improving resection rates.
  • - Despite the promise of accelerated liver regeneration from methods like ALPPS, challenges remain, including a high mortality rate and the need for careful patient selection, prompting a plethora of modifications to enhance safety and effectiveness.
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Background: For patients with esophageal adenocarcinoma or cancer of the gastroesophageal junction, radical esophagectomy with 2-field lymphadenectomy is the cornerstone of the multimodality treatment with curative intent. Both conventional minimally invasive esophagectomy (MIE) and robot assisted minimally invasive esophagectomy (RAMIE) were shown to be superior compared to open transthoracic esophagectomy considering postoperative complications. However, no randomized comparison exists between MIE and RAMIE in the Western World for patients with esophageal adenocarcinoma.

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Bouveret's syndrome is a rare complication resulting from gallstone disease. Both surgical and endoscopical procedures are performed, with the disease to be seen as strictly interdisciplinary. There are no well-established recommendations for this condition.

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Metabolic surgery in patients with poorly controlled type 2 diabetes and low BMI Bariatric surgery has been established as an efficient therapy for morbid obesity. Metabolic surgery represents the operative treatment of type 2 diabetes and other metabolic disorders. Metabolic surgery does not focus on weight loss, as many mechanisms, which are responsible for the improvement of the glycemic control are independent from weight loss.

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Despite improvements in operative strategies for esophageal resection, anastomotic leaks, fistula, postoperative pulmonary complications, and chylothorax can occur. Our review seeks to identify potential risk factors, modalities for early diagnosis, and novel interventions that may ameliorate the potential adverse effects of these surgical complications following esophagectomy.

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Background: Living-donor nephrectomy (LDN) is challenging, as surgery is performed on healthy individuals. Minimally invasive techniques for LDN have become standard in most centers. Nevertheless, numerous techniques have been described with no consensus on which is the superior approach.

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Brucellosis is a common, worldwide zoonosis. Clinical presentation is protean and often goes unrecognized. Hepatic brucelloma is a rare local complication of chronic brucellosis.

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Importance: Sleeve gastrectomy is increasingly used in the treatment of morbid obesity, but its long-term outcome vs the standard Roux-en-Y gastric bypass procedure is unknown.

Objective: To determine whether there are differences between sleeve gastrectomy and Roux-en-Y gastric bypass in terms of weight loss, changes in comorbidities, increase in quality of life, and adverse events.

Design, Setting, And Participants: The Swiss Multicenter Bypass or Sleeve Study (SM-BOSS), a 2-group randomized trial, was conducted from January 2007 until November 2011 (last follow-up in March 2017).

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Purpose: The aims of the present study were to assess whether planned secondary wound closure at the insertion site of the circular stapler reduces wound infection rate and postoperative morbidity after laparoscopic Roux-en-Y gastric bypass (RYGB) and to identify independent predictive factors increasing the risk for wound infections after RYGB.

Methods: This paper is a retrospective single-center analysis of a prospectively collected database of 1400 patients undergoing RYGB surgery in circular technique between June 2000 and June 2016. Planned secondary wound closure at the circular stapler introduction site was performed at postoperative day 3 in 291 (20.

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Objective: The long-term follow up data of 2 prospective phase II trials is reported (NCT00072033, NCT00445861), which investigated neoadjuvant chemoradiation followed by surgery in patients with esophageal carcinoma. Postoperative complications as well as prognostic factors and patterns of relapse during long-term observation are shown.

Summary Of Background Data: Long-term follow-up is often missing in the complex setting of multimodal treatments of esophageal carcinoma; this leads to rather undifferentiated follow-up guidelines for this tumor entity.

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Purpose: Currently, there are two laparoscopic stapling techniques to perform the gastrojejunostomy in gastric bypass surgery: the linear stapling and circular stapling techniques. The aim of the study was to compare the two techniques regarding postoperative morbidity and weight loss at an accredited bariatric reference center in Switzerland.

Methods: We compared two consecutive cohorts at a single institution between November 2012 and June 2014 undergoing laparoscopic gastric bypass surgery.

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Introduction: In patients with infection and sepsis serum levels of Pancreatic Stone protein/regenerating protein I (PSP) are highly elevated. The origin of PSP during these conditions is presumably the pancreas, however, an intestinal origin cannot be excluded. Similarly, pancreatitis-associated protein (PAP) was identified in the pancreas.

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Background: This study aims to determine the long-term prognostic value of coronary CT angiography (CCTA) prior to bariatric surgery in severely obese patients with a body mass index (BMI) ≥35 kg/m.

Material And Methods: Seventy consecutive patients undergoing cardiac CT for coronary assessment prior to bariatric surgery were prospectively included. Images were analysed for the presence of coronary calcification and for non-obstructive (<50%) or obstructive (>50% stenosis) coronary artery disease (CAD).

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Objective: The aim of this study was to assess the influence of regional lymph node (RLN) retrieval on stage migration and survival in pancreatic cancer.

Methods: A total of 7685 stage I and II pancreatic cancer patients were identified in the Surveillance, Epidemiology, and End Results database in 2004-2011. The impact of RLN was assessed using Cox regression, propensity score methods, and joinpoint regression.

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Objective: Laparoscopic sleeve gastrectomy (LSG) is performed almost as often in Europe as laparoscopic Roux-Y-Gastric Bypass (LRYGB). We present the 3-year interim results of the 5-year prospective, randomized trial comparing the 2 procedures (Swiss Multicentre Bypass Or Sleeve Study; SM-BOSS).

Methods: Initially, 217 patients (LSG, n = 107; LRYGB, n = 110) were randomized to receive either LSG or LRYGB at 4 bariatric centers in Switzerland.

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Background And Objectives: Definition of individual risk profile is the first step to implement strategies to keep the delicate balance between under- and overimmunosuppression after kidney transplantation.

Design, Setting, Participants, & Measurements: We used data from the Efficacy Limiting Toxicity Elimination Symphony Study (1190 patients between 2002 and 2004) to model risk of rejection and infection in the first year after kidney transplantation. External validation was performed in a study population from the Fixed-Dose Concentration-Controlled Trial (630 patients between 2003 and 2006).

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Background: An increasing fraction of gastric cancer patients present with distant metastases at diagnosis. The objective of the present 11-year population-based trend analysis was to assess the survival rates in patients who underwent and in patients who did not undergo palliative gastrectomy.

Methods: Patients with metastatic gastric cancer were identified from the Surveillance, Epidemiology, and End Results (SEER) database between 1998 and 2009.

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Background: We previously documented that a stringent implementation of a preemptive cytomegalovirus (CMV) prevention protocol reduced the number of CMV disease episodes after kidney transplantation, when compared with a routine preemptive protocol. The impact on overall costs was assessed.

Methods: Cost comparisons were made for inpatient and outpatient costs and overall costs, using costs provided by the financial department.

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Background: We developed a multicentric Swiss protocol for ABO-incompatible kidney transplantation including immunoadsorption column reuse. The aim of this study was to assess efficacy and safety of immunoadsorption column reuse in ABO-incompatible kidney transplantation.

Methods: We performed a multicentric prospective trial including all ABO-incompatible kidney transplantations in Switzerland from 2005 to 2011.

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Background: Management of leakages of the gastrojejunal anastomosis after laparoscopic Roux-en-Y gastric bypass (LRYGB) can be complex. New endoscopic techniques such as covered stents and over-the-scope clips (OTCs) have been developed and are valuable alternative therapeutic options to reoperation and drainage. The aim of this study was to compare the value of stents and OTCs with surgical treatment options for the therapy of anastomotic leakages after LRYGB.

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Bariatric surgery is the most effective therapy to treat obesity and its sequelae. With the increasing incidence of obesity, the number of bariatric procedures has dramatically increased in recent years. The perioperative morbidity reached a very low level, and nearly all revisional bariatric procedures are primarily minimally invasive today.

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Obesity has been steadily increasing over the last three decades and is one of the leading causes of increased health costs due to its associated comorbidities. Unfortunately, conservative treatment including lifestyle changes did not achieve the desired results. Bariatric surgery, on the other hand, has emerged as an effective and safe treatment for obesity and its related comorbidities such as type 2 diabetes.

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Bariatric surgery is the most effective treatment of obesity and its associated diseases like type 2 diabetes mellitus. Given the obesity epidemic and the efficacy of surgical treatment, the number of surgical weight loss procedures has grown in recent years. Nevertheless, there is little consensus regarding the extent of preoperative investigations required prior to patients undergoing surgery.

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