Michael Weitzendorfer

ORCID: 0000-0003-1657-7405
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About
Contact & Profiles
Research Areas
  • Gastroesophageal reflux and treatments
  • Esophageal and GI Pathology
  • Helicobacter pylori-related gastroenterology studies
  • COVID-19 and healthcare impacts
  • Gastric Cancer Management and Outcomes
  • Eosinophilic Esophagitis
  • Esophageal Cancer Research and Treatment
  • Colorectal Cancer Surgical Treatments
  • Dysphagia Assessment and Management
  • Hernia repair and management
  • Cardiac, Anesthesia and Surgical Outcomes
  • Pancreatic and Hepatic Oncology Research
  • Respiratory and Cough-Related Research
  • Stoma care and complications
  • Thyroid and Parathyroid Surgery
  • Colorectal and Anal Carcinomas
  • Head and Neck Anomalies
  • Cancer Genomics and Diagnostics
  • Airway Management and Intubation Techniques
  • Gastrointestinal disorders and treatments
  • Trauma and Emergency Care Studies
  • Renal cell carcinoma treatment
  • Metastasis and carcinoma case studies
  • Appendicitis Diagnosis and Management
  • Surgical site infection prevention

Paracelsus Medical University
2017-2025

Salzburger Landeskliniken
2021-2024

Unfallkrankenhaus Salzburg
2022

Paracelsus Medizinische Privatuniversität
2018

Ordensklinikum Linz Barmherzige Schwestern
2015

The aim of this study was to compare the diagnostic accuracy salivary pepsin with oropharyngeal pH monitoring using Restech measurement system (Dx-pH) for diagnosis laryngopharyngeal reflux (LPR).Prospective cohort study.Seventy patients primary symptoms related LPR underwent gastroscopy, high-resolution manometry, throughout 24-hour (MII-pH), and barium esophagography between October 2015 May 2018. In addition, an ear, nose, throat examination performed, including assessment Belafsky Reflux...

10.1002/lary.28320 article EN cc-by-nc The Laryngoscope 2019-10-11
I Dajti José Ignacio Valenzuela L Boccalatte Nicolas A Gemelli Dantwan Smith and 95 more Nagendra N. Dudi‐Venkata Hidde M. Kroon Tarik Sammour Matthew M. Roberts D Mitchell K Lah A Pearce Dion Morton Amanda Dawson A Drane Claire Sharpin Ramesh Nataraja Maurizio Pacilli Daniel Cox Vijayaragavan Muralidharan Georgina Riddiough Edmund Clarke Wael Jamel Kirby R. Qin Peter Pockney Daron Cope N Egoroff Natalie Lott Sven Putnis S De Robles Zen Yang Ang Martin Mitteregger Stefan Uranitsch Marjorie Stiegler Gerald Seitinger Felix Aigner D B Lumenta Sebastian P. Nischwitz Erika Richtig Mauro Pau Petra Srekl-Filzmaier Nicolas Eibinger Birgit Michelitsch Melanie Fediuk A Papinutti Geoffrey Seidel Joseph Kahn Tina Cohnert Donna A. Messner F. Ofner J Presl Márta Varga Michael Weitzendorfer K. Emmanuel Alf-Dorian Binder Marc Zimmermann S Holawe Emeka Nkenke Christoph Grimm M Kranawetter Ashrarur Rahman Mitul Nazmul Islam Syed S. Karim Niels Komen Sven Putnis S De Robles Emily Ang Herbert De Praetere Tim Tollens G Schols C. Smets Laura Haenen Jorien Quintens K Van Belle Gabriëlle H. van Ramshorst Piet Pattyn Liesbeth Desender Thomas Martens Dirk Van de Putte Philip Lerut Aude Grimonprez Marcus L.F. Janssen G. De Smul P. Wallaert Jef Van den Eynde Wouter Oosterlinck Raf Van den Eynde An Sermon A. Boeckxstaens Anne-Laure Cordonnier Jeroen De Coster Joris Jaekers Constantinus Politis Marc Miserez Nicolas Duchateau Charles de Gheldere Nicolas Flamey Piet Pattyn A Christiano Benedetta Guidi

To support the global restart of elective surgery, data from an international prospective cohort study 8492 patients (69 countries) was analysed using artificial intelligence (machine learning techniques) to develop a predictive score for mortality in surgical with SARS-CoV-2. We found that patient rather than operation factors were best predictors and used these create COVIDsurg Mortality Score (https://covidsurgrisk.app). Our demonstrates it is safe wide range services selected patients.

10.1093/bjs/znab183 article EN cc-by British journal of surgery 2021-04-29

10.1007/s10353-025-00857-2 article EN other-oa European surgery. Supplement/European surgery 2025-01-30

The assessment of hiatal hernias (HH) is typically done with barium swallow X‑ray, upper endoscopy, and by high-resolution esophageal manometry (HRM). aim this study was to assess the clinical utility these methods in terms HH detection their correlation gastroesophageal reflux disease (GERD). A retrospective comparative analysis patients symptoms GERD carried out. performance endoscopy HRM diagnosing assessed, taking X‑ray as a reference. Furthermore, statistically between detected presence...

10.1007/s10353-017-0492-y article EN cc-by European surgery. Supplement/European surgery 2017-09-19

Abstract Background Previous studies suggest clinical effectiveness of endoscopic full-thickness plication in selected patients with gastroesophageal reflux disease (GERD). The aim this study was to assess the safety and efficiency GERDx™ device by evaluating parameters, symptom scores, quality life (QoL). Methods Prospective one-arm trial outcome forty GERD subjected device. We included at least one typical despite treatment a PPI for > 6 months, pathologic esophageal acid exposure,...

10.1007/s00464-018-6153-9 article EN cc-by Surgical Endoscopy 2018-03-30

Abstract Reasons for structural and outcome differences in esophageal cancer surgery Western Europe remain unclear. This questionnaire study aimed to identify the organization of surgical care Europe. A cross-sectional international was conducted among upper gastrointestinal (GI) surgeons from One surgeon per country selected based on scientific output active membership European Society Diseases Esophagus or (inter)national GI committee. The consisted 51 structured questions surgery,...

10.1093/dote/doae033 article EN cc-by Diseases of the Esophagus 2024-04-08

The aim of the present trial is to investigate clinical efficiency GERDx device for patients with gastroesophageal reflux disease (GERD).Prospective study evaluating Gastrointestinal Quality Life Index, symptoms scores, as well esophageal manometry and impedance-pH-monitoring data at baseline 3 months after endoscopic full-thickness plication device.In total, 28 underwent procedure so far. Mean Index DeMeester general reflux-specific scores improved (P<0.01). Three 6 patients, who were...

10.1097/sle.0000000000000396 article EN Surgical Laparoscopy Endoscopy & Percutaneous Techniques 2017-04-05

This study investigates if pledgeted sutures for hiatal closure could be an alternative to mesh the surgical treatment of large hernia. Forty-one patients who underwent laparoscopic 270° Toupet fundoplication with sutured crura between September 2014 and April 2017 were evaluated regard recurrence hernia at 3 months 1 year after surgery. Indication pledgets was a surface area least 5.60 cm2, or migration more than 1/3 stomach into thorax preoperative size > 5 cm. The integrity repair...

10.1007/s10029-019-01890-3 article EN cc-by Hernia 2019-01-25

Impaired E-cadherin (Cdh1) functions are closely associated with cellular dedifferentiation, infiltrative tumor growth and metastasis, particularly in gastric cancer. The class-I carcinogen Helicobacter pylori (H. pylori) colonizes epithelial cells induces Cdh1 shedding, which is primarily mediated by the secreted bacterial protease high temperature requirement A (HtrA). In this study, we used human primary cell lines derived from gastroids mucosoids different healthy donors to investigate...

10.3390/ijms25137083 article EN International Journal of Molecular Sciences 2024-06-27

Some medical disciplines have reported a strong decrease of emergencies during the coronavirus disease 2019 (COVID-19) pandemic; however, effect lockdown on general surgery remains unclear.This study is retrospective, multicenter analysis emergency operations performed period from 1 March to 15th 2020 and in same time three centers providing surgical care area Salzburg-North, Austria.In total 165 surgeries were compared 287 2019. This significant 122 (42.5%) COVID-19 (p = 0.005). The length...

10.1007/s10353-021-00692-1 article EN cc-by European surgery. Supplement/European surgery 2021-03-04

The aim of this study was to evaluate the value salivary pepsin and oropharyngeal pH-monitoring assess surgical outcome patients with laryngopharyngeal reflux (LPR).Twenty consecutive LPR despite proton pump inhibitor treatment received laparoscopic antireflux surgery. Twenty-four hour esophageal (multichannel intraluminal impedance monitoring [MII]-pH) manometry (high-resolution manometry) data were documented preoperatively at 3-month follow-up. An ears, nose throat (ENT) examination...

10.1089/lap.2017.0360 article EN Journal of Laparoendoscopic & Advanced Surgical Techniques 2017-07-21

Patients with incisional hernias (IH) and risk factors for surgical site occurrences (SSOs) such as defined comorbidities and/or potential contaminations are considered to be treated bioprosthetics. A retrospective analysis of consecutive patients who had undergone elective IH repair synthetic mesh materials between 2009 2013 was conducted. Only were classified into Grades II III according the classification Ventral Hernia Working Group (VHWG) study. Primary outcome parameter incidence SSO....

10.1177/000313481508100430 article EN The American Surgeon 2015-04-01

Sexual function is crucial for the quality of life and can be highly affected by preoperative therapy surgery. The aim this study was to identify potential risk factors poor sexual life.Female patients were asked complete Female Function Index (FSFI-6). Male demanded answer International Erectile (IIEF-5).In total, 79 filled in questionary, yielding a response rate 41.57%. proportion women represented 32.91%, median age 76.0 years (66.0-81.0). dysfunction appeared 88.46% female patients....

10.3390/cancers14235796 article EN Cancers 2022-11-24

Intraductal papillary mucinous neoplasms (IPMNs) represent the most common precancerous cystic lesions of pancreas. The aim our study was to investigate if resection for non-invasive IPMNs alters quality life (QoL) in a long-term follow-up.Patients (n = 50) included analysis were diagnosed and resected from 2010 2016. QoL assessed at median 5.5 years after resection. At that point time, current as well before evaluated retrospectively. standardised European Organisation Research Treatment...

10.1159/000515459 article EN European Surgical Research 2021-01-01

This study assessed the impact of a prophylactic, 3D funnel-shaped intraperitoneal mesh on rate parastomal hernia after abdominoperineal rectum resection with permanent end colostomy.Data from 76 patients receiving colostomy between 2013 and 2018 were collected retrospectively. Occurrences reoperation due to in without prophylactic compared by univariate, multivariate, propensity score-adjusted analyses.Twenty-two (28.9%) included received mesh. The mean follow-up was 39.3 ± 23.8 months....

10.1111/codi.15817 article EN Colorectal Disease 2021-07-15
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