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Internal Hernias After Laparoscopic Gastric Bypass (IHafterLRYGB)

This study has been completed.
Information provided by (Responsible Party):
University of California, San Francisco Identifier:
First received: December 26, 2009
Last updated: September 23, 2013
Last verified: September 2013
The main goal of this study is to describe the trends in the incidence rate of internal hernia presentation after different modifications of the mesenteric closure technique after primary laparoscopic Roux-en-Y gastric bypass (RYGB) surgery from 1997-2009.

Internal Hernia
Mesocolic Hernia
Petersen´s Hernia
Jejunojejunostomy Hernia
Bowel Obstruction
Ischemic Bowel

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Retrospective
Official Title: Incidence of Internal Hernias After Laparoscopic Roux-en-Y Gastric Bypass Over the Last Decade: 1997 to 2008

Resource links provided by NLM:

Further study details as provided by University of California, San Francisco:

Primary Outcome Measures:
  • Closure technique for mesocolic defect: 1- non-closure, 2- running with absorbable material, 3- interrupted with non-absorbable material, and 4- running with non-absorbable [ Time Frame: throughout follow-up ]
  • recurrence of symptomatic mesocolic internal hernia [ Time Frame: throughout follow-up ]

Enrollment: 220
Study Start Date: May 2009
Study Completion Date: July 2009
Primary Completion Date: June 2009 (Final data collection date for primary outcome measure)
Interna hernia after primary gastric bypass

  Show Detailed Description


Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients presenting with internal hernia after different modifications of the mesenteric closure technique after Primary Laparoscopic RYGB surgery from 1997-2009.

Inclusion Criteria:

  • patient status post primary laparoscopic standard RYGB surgery who underwent internal hernia reduction and repair with any or the combination of the following:

    • closure of synchronous mesocolic or mesenteric space defects without incarcerated bowel
    • conversion to open (laparotomy)
    • small bowel resection with or without reversal
  • status post primary laparoscopic standard RYGB surgery with incidental finding of internal hernia space defect with or without bowel through the defect

Exclusion Criteria:

  • any other type of re-operative surgery after primary standard RYGB
  • patient age < 18 years
  • missing records and/or unreachable patients with scant information for analysis
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01040364

United States, California
UCSF Fresno Center for Medical Education and Research, Department of Surgery
Fresno, California, United States, 93701
Sponsors and Collaborators
University of California, San Francisco
Study Director: Francisco M Tercero, MD Research Associate, University of California San Francisco
Principal Investigator: Kelvin D Higa, MD Professor of Surgery, University of California San Francisco
  More Information

Additional Information:
Publications: American Society of Metabolic and Bariatric Surgeons.

Responsible Party: University of California, San Francisco Identifier: NCT01040364     History of Changes
Other Study ID Numbers: CMC IRB No. 2009024
U1111-1113-0414 ( Other Identifier: World Health Organization, Universal Trial Number )
Study First Received: December 26, 2009
Last Updated: September 23, 2013

Keywords provided by University of California, San Francisco:
Internal hernia
Mesocolic hernia
Petersen´s hernia
Jejunojejunostomy hernia
Bowel obstruction
Ischemic bowel
Complication after gastric bypass
Re-operative bariatric surgery
Chronic pain after gastric bypass

Additional relevant MeSH terms:
Intestinal Obstruction
Hernia, Abdominal
Pathological Conditions, Anatomical
Intestinal Diseases
Gastrointestinal Diseases
Digestive System Diseases processed this record on May 24, 2017