Measurement of compartment pressure of the rectus sheath during intra-abdominal hypertension in rats

Meier, Christoph; Schramm, René; Holstein, Joerg H.; Seifert, Burkhardt; Trentz, Otmar; Menger, Michael D.; Schramm, René
October 2006
Intensive Care Medicine;Oct2006, Vol. 32 Issue 10, p1644
Academic Journal
journal article
Objective: To investigate whether the compartment pressure of the rectus sheath (CPRS) reflects the intra-abdominal pressure (IAP) under various conditions of intra-abdominal hypertension (IAH).Design and Setting: Prospective experimental study with in vivo pressure measurements at the Institute for Clinical and Experimental Surgery, University of Saarland.Animals: Sprague-Dawley rats.Interventions: Stepwise increase and decrease in IAP with continuous measurement of the correspondent CPRS.Measurements and Results: Physiological IAP (2 mmHg) and CPRS (6 mmHg) showed a statistically significant difference. Stepwise elevation in IAP was associated with a simultaneous increase in CPRS. Accordingly, stepwise decompression of IAP resulted in a stepwise decrease in CPRS. Under both conditions Bland-Altman analysis comparing IAP to correspondent CPRS showed a very good agreement for IAP at or above 12 mmHg. In addition, closure of the overlaying subcutaneous tissue and skin did not affect CPRS or its correlation with IAP.Conclusions: CPRS accurately reflects IAP for IAP of 12 mmHg or higher. Thus CPRS measurements may represent a novel approach for diagnosis and monitoring of IAH.


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