John R. Preto

Porto, Portugal

Last Updated: 09/26/2026

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Found 51 publications

Resectional Roux-en-Y Gastric Bypass Versus Standard Roux-en-Y Gastric Bypass: Impact of Concomitant Gastric Remnant Resection on Postoperative Complications and Weight Loss Outcomes in a High-Volume Center.

Resectional Roux-en-Y Gastric Bypass Versus Standard Roux-en-Y Gastric Bypass: Impact of Concomitant Gastric Remnant Resection on Postoperative Complications and Weight Loss Outcomes in a High-Volume Center.

Journal: Journal of metabolic and bariatric surgery

Published: May 12, 2026

Nutritional Deficiencies Before and After Metabolic and Bariatric Surgery in Patients Above 50.0 kg/m2: A Single Center Study.

Nutritional Deficiencies Before and After Metabolic and Bariatric Surgery in Patients Above 50.0 kg/m2: A Single Center Study.

Journal: Journal of metabolic and bariatric surgery

Published: September 07, 2024

SF-BARI Score for Assessment of Long-Term Results in Patients with BMI ≥ 50 kg/m2 Submitted to Roux-en-Y Gastric Bypass or Sleeve Gastrectomy.

SF-BARI Score for Assessment of Long-Term Results in Patients with BMI ≥ 50 kg/m2 Submitted to Roux-en-Y Gastric Bypass or Sleeve Gastrectomy.

Journal: Obesity surgery

Published: September 03, 2024

Portomesenteric Venous Thrombosis after Bariatric Surgery: A Case Series and Systematic Review Comparing LSG and LRYGB.

Portomesenteric Venous Thrombosis after Bariatric Surgery: A Case Series and Systematic Review Comparing LSG and LRYGB.

Journal: Journal of personalized medicine

Published: June 05, 2024

Assessing Nutritional Deficiencies in Bariatric Surgery Patients: A Comparative Study of Roux-en-Y Gastric Bypass versus Sleeve Gastrectomy.

Assessing Nutritional Deficiencies in Bariatric Surgery Patients: A Comparative Study of Roux-en-Y Gastric Bypass versus Sleeve Gastrectomy.

Journal: Journal of personalized medicine

Published: April 27, 2024

Intragastric Balloon as a First Step Before Metabolic Bariatric Surgery in Patients with BMI ≥ 50 kg/m2: are the Results After Balloon Related to Global Outcomes After Surgery?

Intragastric Balloon as a First Step Before Metabolic Bariatric Surgery in Patients with BMI ≥ 50 kg/m2: are the Results After Balloon Related to Global Outcomes After Surgery?

Journal: Obesity surgery

Published: April 21, 2024

The Impact of Cholecystectomy in Patients with Post-Bariatric Surgery Hypoglycemia.

The Impact of Cholecystectomy in Patients with Post-Bariatric Surgery Hypoglycemia.

Journal: Obesity surgery

Published: April 17, 2024

Preoperative risk factors for early postoperative bleeding after Roux-en-Y gastric bypass surgery: a systematic review and meta-analysis.

Preoperative risk factors for early postoperative bleeding after Roux-en-Y gastric bypass surgery: a systematic review and meta-analysis.

Journal: Langenbeck's archives of surgery

Published: January 28, 2024

Efficiency and safety of single anastomosis sleeve ileal (SASI) bypass in the treatment of obesity and associated comorbidities: a systematic review and meta-analysis.

Efficiency and safety of single anastomosis sleeve ileal (SASI) bypass in the treatment of obesity and associated comorbidities: a systematic review and meta-analysis.

Journal: Langenbeck's archives of surgery

Published: December 30, 2023

Impact of a Multicomponent Exercise Training Program on Muscle Strength After Bariatric Surgery: A Randomized Controlled Trial.

Impact of a Multicomponent Exercise Training Program on Muscle Strength After Bariatric Surgery: A Randomized Controlled Trial.

Journal: Obesity surgery

Published: December 22, 2023

Roux-en-Y gastric bypass and sleeve gastrectomy as revisional bariatric procedures after adjustable gastric banding: a retrospective cohort study.

Roux-en-Y gastric bypass and sleeve gastrectomy as revisional bariatric procedures after adjustable gastric banding: a retrospective cohort study.

Journal: Langenbeck's archives of surgery

Published: September 07, 2023

Effects of a supervised exercise training on body composition after bariatric surgery: a randomized controlled trial.

Effects of a supervised exercise training on body composition after bariatric surgery: a randomized controlled trial.

Journal: Obesity (Silver Spring, Md.)

Published: March 08, 2023

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Last Updated: 09/26/2026