Blar i NTNU Open på forfatter "Johnsen, Gjermund"
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Characteristics of Patients Reporting Presumed Problematic Drinking Behavior After Gastric Bypass: Exploring Long-Term Data From the BAROBS Study
Strømmen, Magnus; Kløckner, Christian; Bjerkan, Kirsti Kverndokk; Græslie, Hallvard; Hoff, Dag Arne Lihaug; Johnsen, Gjermund; Kulseng, Bård; Mårvik, Ronald; Nymo, Siren; Sandvik, Jorunn (Peer reviewed; Journal article, 2021)Objective: To explore patients’ long-term experiences with drinking alcohol after Roux-n-Y gastric bypass (RYGB) for conceptualizing what may indicate problematic drinking behavior after bariatric surgery. Study Design: ... -
The Effect of Roux-en-Y Gastric Bypass on Non-Alcoholic Fatty Liver Disease Fibrosis Assessed by FIB-4 and NFS Scores—An 11.6-Year Follow-Up Study
Sandvik, Elfrid Christine Smith; Aasarød, Kristin Matre; Johnsen, Gjermund; Hoff, Dag Arne Lihaug; Kulseng, Bård Eirik; Hyldmo, Åsne Ask; Græslie, Hallvard; Nymo, Siren; Sandvik, Jorunn; Fossmark, Reidar (Peer reviewed; Journal article, 2022)Severe obesity is a strong risk factor for non-alcoholic fatty liver disease (NAFLD). Roux-en-Y gastric bypass (RYGB) surgery effectively induces weight loss, but few studies have described the long-term effects of RYGB ... -
Incidence of Symptomatic Cholelithiasis and Surgical or Endoscopic Treatment After Roux-en-Y Gastric Bypass in Central Norway
Belgau, Ingrid Martine (Master thesis, 2022)Introduksjon: Behandlingskrevende, symptomatisk gallestein er en kjent bivirkning etter Roux-en-Y Gastric Bypass (RYGB), men den rapporterte forekomsten varierer. Mål: Å evaluere insidensen av behandlingskrevende gallestein ... -
Lack of transfer of skills after virtual reality simulator training with haptic feedback
Våpenstad, Cecilie; Hofstad, Erlend Fagertun; Bø, Lars Eirik; Kuhry, Esther; Johnsen, Gjermund; Mårvik, Ronald; Langø, Thomas; Hernes, Toril A. Nagelhus (Journal article; Peer reviewed, 2017)Background and objective: Virtual reality (VR) simulators enrich surgical training and offer training possibilities outside of the operating room (OR). In this study, we created a criterion-based training program on a VR ... -
Mechanistic Comparison between Gastric Bypass vs. Duodenal Switch with Sleeve Gastrectomy in Rat Models
Kodama, Yosuke; Johannessen, Helene; Furnes, Marianne Waldum; Zhao, Chun-Mei; Johnsen, Gjermund; Mårvik, Ronald; Kulseng, Bård; Chen, Duan (Journal article; Peer reviewed, 2013)Background: Both gastric bypass (GB) and duodenal switch with sleeve gastrectomy (DS) have been widely used as bariatric surgeries, and DS appears to be superior to GB. The aim of this study was to better understand the ... -
Neoadjuvant chemotherapy versus neoadjuvant chemoradiotherapy for cancer of the esophagus or gastroesophageal junction: long-term results of a randomized clinical trial
von Döbeln, Gabriella Alexandersson; Klevebro, Fredrik; Jacobsen, Anne-Birgitte; Johannessen, Hans Olaf; Nielsen, Niels Hilmer; Johnsen, Gjermund; Hatlevoll, Ingunn; Glenjen, Nils; Friesland, Signe; Lundell, Lars R.; Yu, Jingru; Nilsson, Magnus (Peer reviewed; Journal article, 2019)NeoRes I is a randomized phase II trial comparing neoadjuvant chemoradiotherapy with neoadjuvant chemotherapy in the treatment of resectable cancer of the esophagus or gastroesophageal junction. Patients with biopsy-proven ... -
Oncological outcomes of standard versus prolonged time to surgery after neoadjuvant chemoradiotherapy for oesophageal cancer in the multicentre, randomised, controlled NeoRes II trial
Nilsson, K.; Klevebro, F.; Sunde, B.; Rouvelas, I.; Lindblad, M.; Szabo, E.; Halldestam, I.; Smedh, U.; Wallner, B.; Johansson, J.; Johnsen, Gjermund; Aahlin, Eirik Kjus; Johannessen, Hans Olaf; Alexandersson von Döbeln, von; Hjortland, Geir Olav; Wang, N.; Shang, Y.; Borg, D.; Quaas, A.; Bartella, I.; Bruns, C.; Schröder, W.; Nilsson, M. (Peer reviewed; Journal article, 2023)Background The optimal time to surgery (TTS) after neoadjuvant chemoradiotherapy (nCRT) for oesophageal cancer is unknown and has traditionally been 4-6 weeks in clinical practice. Observational studies have suggested ... -
Optimal timing of assessment tasks depending on experience level of surgical trainees
Våpenstad, Cecilie; Hofstad, Erlend Fagertun; Bernstein, Tor Eivind; Aadahl, Petter; Johnsen, Gjermund; Mårvik, Ronald (Peer reviewed; Journal article, 2019)Introduction: Box trainers with motion analysis are important add-ons to surgical training and skills assessment outside the operating room, given that they exhibit construct validity. Material and methods: Four different ... -
Randomized controlled trial of nasogastric tube use after esophagectomy: Study protocol for the kinetic trial
Hedberg, Jakob; Sundbom, Magnus; Edholm, David; Aahlin, Eirik Kjus; Szabo, Eva; Lindberg, Fredrik; Johnsen, Gjermund; Førland, Dag T.; Johansson, Jan; Kauppila, Joonas H; Svendsen, Lars Bo; Nilsson, Magnus; Lindblad, Mats; Lagergren, Pernilla; Larsen, Michael Hareskov; Åkesson, Oscar; Löfdahl, Per; Mala, Tom; Achiam, Michael Patrick (Journal article; Peer reviewed, 2024)Summary Esophagectomy is a complex and complication laden procedure. Despite centralization, variations in perioparative strategies reflect a paucity of evidence regarding optimal routines. The use of nasogastric (NG) ... -
What causes treatment failure - the patient, primary care, secondary care or inadequate interaction in the health services?
Farup, Per Grønaas; Blix, Ivar; Førre, Sigurd; Johnsen, Gjermund; Lange, Ove Juel; Johannessen, Rune; Petersen, Hermod (Journal article; Peer reviewed, 2011)Background: Optimal treatment gives complete relief of symptoms of many disorders. But even if such treatment is available, some patients have persisting complaints. One disorder, from which the patients should achieve ...