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Objective: To study the changes in indicators of oxidative toxemia, hypoxia and intra-abdominal hypertension in various forms of acute pancreatitis., Material and Methods: The results of complex diagnostics in 62 patients with various forms of acute pancreatitis were analyzed. We estimated the indicators of oxidative status, hypoxia and intra-abdominal hypertension. Edematous pancreatitis was diagnosed in 35 (56.5%) patients, destructive acute pancreatitis - in 27 (43.5%) patients (sterile pancreatic necrosis in 14 (22.6%) patients, and infected pancreatic necrosis in 13 (20.9%) patients)., Results: Progression of disease is followed by active lipid peroxidation with accumulation of conjugated dienes and malondialdehyde, as well as increase in serum lactate and pyruvate levels. Intra-abdominal pressure increases with progression of disease and destructive processes. There was direct correlation between intra-abdominal pressure and clinical form of acute pancreatitis ( r =0.8033, p <0.001). The same was true for intra-abdominal pressure and indicators of oxidative toxemia (conjugated dienes - p <0.001, malondialdehyde - p <0.001) and hypoxia (lactate - p <0.001, pyruvate - p <0.001, and hypoxia coefficient - p <0.001)., Conclusion: A comprehensive examination of patients with acute pancreatitis allows to analyze lipid peroxidation, hypoxia and intra-abdominal hypertension. These parameters depend on clinical form of disease.