Peritoneal Fluid Analysis in Ponies after Abdominal Surgery

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Abstract
Ten student surgery ponies were subjected to exploratory laparotomy. Abdominal paracentesis was performed preoperatively and daily postoperatively for 6 days, then the ponies were euthanatized and necropsied. Initial baseline peritoneal fluid parameters were within established reference limits. Postoperatively, the toal leukocyte count and total protein in the peritoneal fluid rose and remained elevated for the 6 days of the study. Complete blood counts (CBCs) were performed preoperatively and on days 1 and 4 postoperatively. On day 1, a stress leukogram with a mild inflammatory component developed, but by day 4, the CBCs were within normal limits. The mean plasma fibrinogen levels, which were determined daily, peaked on day 4.