Intestinal pHi studied with continuous saline tonometry during ischaemia and reperfusion in the pig.
OBJECTIVE
To evaluate continuous saline tonometry for detection of progressive intestinal ischaemia and reperfusion in a porcine model.


METHODS
In eight anaesthetised pigs, small bowel mucosal pCO2 was recorded by means of two identical equipments for continuous saline tonometry and a standard tonometry balloon during ischaemia and reperfusion.


RESULTS
Both systems of saline tonometry functioned stably during the four hour protocol ischaemia, although not significant until after 45 min for one of the tonometers.


CONCLUSIONS
The equipment for continuous saline tonometry has a good reactivity, an accuracy comparable with standard tonometry.
Fröjse
R
R
Department of Surgery, Umeå University Hospital, Umeå, Sweden.
Hedberg
B
B
Bäcklund
T
T
Lindahl
O
O
Häggström
M
M
Angquist
K A
KA
Arnerlöv
C
C
D000818:Animals; D004195:Disease Models, Animal; D006439:Hemodynamics / Q000502:physiology; D006863:Hydrogen-Ion Concentration; D007413:Intestinal Mucosa / Q000098:blood supply* / Q000503:physiopathology*; D007421:Intestine, Small / Q000098:blood supply* / Q000503:physiopathology*; D007511:Ischemia / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology*; D011183:Postoperative Complications; D015427:Reperfusion Injury / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology*; D015203:Reproducibility of Results; D012965:Sodium Chloride; D013552:Swine; D013997:Time Factors; D014065:Tonometry, Ocular; D014656:Vascular Surgical Procedures / Q000009:adverse effects*
D012965:Sodium Chloride