Rene A. Klaassen

Rotterdam, ZH, Netherlands

Last Updated: 09/26/2026

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Found 31 publications

Closure of Mesenteric Defects during Roux-en-Y Gastric Bypass Fails to Reduce Internal Herniation.

Closure of Mesenteric Defects during Roux-en-Y Gastric Bypass Fails to Reduce Internal Herniation.

Journal: Obesity surgery

Published: December 04, 2024

Bariatric surgery reverses morbid obesity-induced changes in the composition of circulating immune cells-a prospective cohort study.

Bariatric surgery reverses morbid obesity-induced changes in the composition of circulating immune cells-a prospective cohort study.

Journal: Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery

Published: July 25, 2024

Preconception maternal gastric bypass surgery and the impact on fetal growth parameters.

Preconception maternal gastric bypass surgery and the impact on fetal growth parameters.

Journal: Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery

Published: February 22, 2023

PROMISE: effect of protein supplementation on fat-free mass preservation after bariatric surgery, a randomized double-blind placebo-controlled trial.

PROMISE: effect of protein supplementation on fat-free mass preservation after bariatric surgery, a randomized double-blind placebo-controlled trial.

Journal: Trials

Published: December 19, 2022

Normalization of Cardiac Function After Bariatric Surgery Is Related to Autonomic Function and Vitamin D.

Normalization of Cardiac Function After Bariatric Surgery Is Related to Autonomic Function and Vitamin D.

Journal: Obesity surgery

Published: July 29, 2022

Bariatric surgery before and after kidney transplant: a propensity score-matched analysis.

Bariatric surgery before and after kidney transplant: a propensity score-matched analysis.

Journal: Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery

Published: June 19, 2022

The Metabolic Health Index Identifies Patients That Will Benefit From Metabolic Surgery.

The Metabolic Health Index Identifies Patients That Will Benefit From Metabolic Surgery.

Journal: The Journal of surgical research

Published: June 17, 2022

Three- and five-year follow-up results of a randomized controlled trial on the effects of cognitive behavioral therapy before bariatric surgery.

Three- and five-year follow-up results of a randomized controlled trial on the effects of cognitive behavioral therapy before bariatric surgery.

Journal: The International journal of eating disorders

Published: June 04, 2022

T and B Cell Composition and Cytokine Producing Capacity Before and After Bariatric Surgery.

T and B Cell Composition and Cytokine Producing Capacity Before and After Bariatric Surgery.

Journal: Frontiers in immunology

Published: March 02, 2022

The Impact of Preconception Gastric Bypass Surgery on Maternal Micronutrient Status before and during Pregnancy: A Retrospective Cohort Study in the Netherlands between 2009 and 2019.

The Impact of Preconception Gastric Bypass Surgery on Maternal Micronutrient Status before and during Pregnancy: A Retrospective Cohort Study in the Netherlands between 2009 and 2019.

Journal: Nutrients

Published: December 20, 2021

Impact of Bariatric surgery on EmbrYONic, fetal and placental Development (BEYOND): protocol for a prospective cohort study embedded in the Rotterdam periconceptional cohort.

Impact of Bariatric surgery on EmbrYONic, fetal and placental Development (BEYOND): protocol for a prospective cohort study embedded in the Rotterdam periconceptional cohort.

Journal: BMJ open

Published: September 03, 2021

Resizing a large pouch after laparoscopic Roux-en-Y gastric bypass: comparing the effect of two techniques on weight loss.

Resizing a large pouch after laparoscopic Roux-en-Y gastric bypass: comparing the effect of two techniques on weight loss.

Journal: Surgical endoscopy

Published: March 27, 2021

Showing 1-12 of 31

Last Updated: 09/26/2026