Intraluminal pH measurement to monitor the vascular perfusion of free jejunal autografts: an experimental study.
An evaluation of the effect of ischaemia upon the intraluminal pH of microvascular free jejunal autografts was undertaken with a view to developing a monitoring system to be used clinically. Employing a canine model, the intraluminal pH of isolated jejunal segments was measured during normal perfusion and under conditions of arterial and venous occlusion. Ischaemia induced a rapid, easily measured fall in intraluminal pH reversible after 1 h of normothermic ischaemia. The most rapid pH change occurred within the first 10 min. It is felt that continuous intraluminal pH measurement may form a reliable method of monitoring the postoperative vascular perfusion of clinical free jejunal transfers.
Sheen
R
R
Microsurgery Research Centre, St Vincent's Hospital, Fitzroy, Victoria, Australia.
MacLeod
A M
AM
O'Brien
B M
BM
D000818:Animals; D004285:Dogs; D006863:Hydrogen-Ion Concentration; D007511:Ischemia / Q000175:diagnosis / Q000503:physiopathology*; D007583:Jejunum / Q000098:blood supply* / Q000637:transplantation; D008026:Ligation; D013997:Time Factors; D014654:Vascular Patency