[Peritonitis in horses: a retrospective study of 95 cases]

Clinical signs of horses with peritonitis were colic (67.4%), elevated heart rate (53.2%), altered mucous membranes (75.8%), reduced intestinal motility (63.2%), increased tension of the abdominal wall (69.9%) and pyrexia (45.1%). The amount of obtained peritoneal fluid was increased in 62.3% of the horses. Colour and translucency of the peritoneal fluid were abnormal in 98.8% of the patients. The nucleated cell count was 83.5 (10-595) x 10(3)/microliter, protein content 35.6 g/l (+/-14.2), specific gravity 1027.3 (+/-7.4) and the relative amount of neutrophils was 87.8% (+/-11). The physical examination and the examination of the peritoneal fluid were of diagnostic value. Complete blood count and blood chemistry indicated the degree of circulatory depression and the duration of the disease. Overall mortality was 47.4% (45/95). Non-survivors had significantly more often an increased heart- and respiratory rate, altered mucous membranes, an increased tension of the abdominal wall, reduced intestinal motility and increased amount of peritoneal fluid. Packed cell volume, urea, creatinine, glutamatdehydrogenase, sorbitoldehydrogenase, lactatdehydrogenase and blood pH were significantly different between survivors and non-survivors. All these parameters were statistically of no prognostic value.