Human Reproduction, Vol. 15, No. 3, 687-691,
March 2000
© 2000 European Society of Human Reproduction and Embryology
Adhesion formation in intubated rabbits increases with high insufflation pressure during endoscopic surgery
1 Centre for Surgical Technologies, Catholic University of Leuven and 2 Department of Gynaecology and Obstetrics, University Hospital Gasthuisberg, Catholic University of Leuven, Belgium
The aim of the study was to test the hypothesis that the increase in adhesion formation by CO2 pneumoperitoneum is caused by mesothelial hypoxaemia. Therefore the effect of the intra-abdominal pressure together with the flow rate upon adhesion formation was evaluated in rabbits following laser and bipolar lesions during endoscopic surgery using humidified CO2 at 35 ± 1°C. The intra-abdominal pressure and flow rate were 5 mmHg and 1 l/min in group 1 (n = 5), 5 mmHg and 10 l/min in group 2 (n = 4), 20 mmHg and 1 l/min in group 3 (n = 5) and 20 mmHg and 10 l/min in group 4 (n = 4) respectively. A rapid and reliable intubation method for rabbits was developed to permit high insufflation pressure. By two-way analysis of variance, total adhesion scores following a laser lesion increased with flow rate (P = 0.0003) and insufflation pressure (P = 0.002). Total adhesion scores of bipolar lesions increased with pressure (P = 0.02) but not with flow rate (P = 0.1). The total adhesion scores of laser and bipolar lesions together increased with flow rate (P = 0.005) and with insufflation pressure (P = 0.004). There was no statistical interaction between flow rate and insufflation pressure. In conclusion, the insufflation pressure in endoscopic surgery with CO2 pneumoperitoneum is a co-factor in adhesion formation, together with desiccation.
Key words: adhesions/desiccation/insufflation pressure/intubation
3 To whom correspondence should be addressed at: Centre for Surgical Technologies (CHT), K.U.Leuven, Minderbroederstraat 17, B-3000, Leuven, Belgium
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