Abdominal pressure profiling in adult horses: cardiovascular effects of intra-abdominal hypertension

The goal of this study is to discover what happens to the abdominal pressure in horses with colic. We believe that increased intra-abdominal pressure occurs in horses with colic and may contribute to decreased blood flow to the organs and subsequent poor outcome. As part of this study we need to take abdominal pressure measurements during the colic examination at The Ohio State University Veterinary Medical Center. The direct abdominal pressure measurement is obtained by connecting a pressure sensor to an abdominal cannula that is already being used to collect peritoneal fluid as a commonly performed procedure in equine colic evaluation.