Professional
Technical
IVT
Peterson's space
A potential anatomical space created during gastric bypass that can become a site for internal hernia formation.
Full Definition
Peterson's space is a potential defect created during Roux-en-Y gastric bypass between the Roux limb mesentery and the transverse mesocolon. Named after surgeon William Peterson, this space represents one of the three main sites where internal hernias can develop following gastric bypass surgery. Proper closure of Peterson's space during the initial procedure is essential to prevent this serious late complication.
Usage
Usage note: Named after William Peterson; possessive form varies in literature but Peterson's is most common.
In Context
- "Peterson's space was carefully closed with non-absorbable sutures to prevent internal herniation." — operative report
- "The patient developed symptoms consistent with internal hernia through Peterson's space." — emergency consultation
Also known as
Peterson defect
Peterson's defect
Don't confuse with
mesenteric defect
mesocolic defect