The prognostic values of estimating intraperitoneal pressure in the occurrence of abdominal wall complicationsin peritoneal dialysis patients.

Abstract

Increased intraperitoneal pressure is associated with abdominal wall complications and technical failure of peritoneal dialysis (PD). Several equations have been developed to estimate intraperitoneal pressure. We aimed to assess the prognostic yield of the intraperitoneal pressure as estimatedby current equations on the occurrence of abdominal wall complications in peritoneal dialysis patients. This is a retrospective analysis of data from a prospective cohortwhich recruited 1207 incident PD patients. Estimated intraperitoneal pressure was calculated using four available equations(according toSigogne, Castellanos, Scanziani and deJesus Ventura). Abdominal wall complications were recorded during follow-up. Univariate analysis and multivariate analysis with competing risk regression were used to assess the predictive power of theestimates of intraperitoneal pressure in the occurrence of abdominal wall complications. During a median follow-up of 30months, 66 (5.5%) patients (1.6/100 patient-years) developed abdominal wall complications. The median time to the occurrence of abdominal wall complications was 5.7months. Only the estimated intraperitoneal pressure by the de Jesus Ventura equation significantly predicted abdominal wall complications by using univariate analyses. Associations between estimated intraperitoneal pressure by the de Jesus Ventura equation and the occurrence of abdominal wall complications disappeared after adjusting for significant clinical factors. We verified the prognostic value of estimation of intraperitoneal pressure by four availableequations in predicting abdominal wall complications in our single-center PD cohort. Due to a low diagnostic yield, a novel equation for estimating the intraperitoneal pressure is urgently needed.