Summary
Severe necrotizing pancreatitis is accompanied by release of hemorhagic ascites fluid (HAF), which is thought to be related to the occurrence and frequency of cardiocirculatory and pulmonary failure as a consequence of acute pancreatitis. The purpose of this study was to evaluate the role of HAF due to these systemic complications. Experiments were performed in 25 pigs (mean b.wt. 22±1kg) under general anesthesia and mechanical ventilation. The animals received 50 ml/kg b.wt. i.p. of either physiologic saline solution (control CO,n=9) or hemorrhagic ascites fluid (HAF,n=16). HAF was obtained from 16 pigs with pancreatitis induced by intraductal infusion of bile salt. Eight animals in the HAF group were pretreated with indomethacin (10 mg/kg i.v. INDO/HAF). All animals were followed up for 6h.
Mean arterial pressure, cardiac output, and stroke volume fell significantly in the HAF(−25%, −27%, −27%) and in the INDO/HAF groups (−24%, −20%, −17%) as compared with controls (−6%, −6%, −6%). Also, left ventricular end-diastolic pressure (LVEDP) decreased by 52% and 48% in both HAF recipient groups, whereas LVEDP was unchanged in the control group. Myocardial contractility (Vmax) remained unaltered in all experimental groups. No significant differences in gas exchange and lung dry/wet weight ratio were observed. Lipase and PGI2 of the unpretreated HAF group rised to 203% and 198% in arterial blood at 6h compared with unaltered levels in the control group. No increase of prostanoid concentrations was detected in the indomethacin-pretreated group, whereas lipase increase by a comparable extent as in the HAF group. We conclude that the early consequences of HAF are mainly characterized by systemic hypotension due to hypovolemia.
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Vollmar, B., Waldner, H., Vierl, M. et al. Hemodynamic effects following intraperitoneal infusion of pancreatic ascites fluid. Res. Exp. Med. 192, 269–279 (1992). https://doi.org/10.1007/BF02576283
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DOI: https://doi.org/10.1007/BF02576283