Abstract

Summary. Aim. Search for new methods for diagnosing acute surgical pathology of the abdominal cavity (ASPAC).
 Materials and methods. 39 patients: liver abscess — 4, acute appendicitis, periapendicular abscess — 3, acute appendicitis, perito-nitis — 5, acute phlegmonous appendicitis — 7, acute phlegmonous cholecystitis — 4, colon perforation, peritonitis — 3 , acute uncomplicated adhesive intestinal obstruction — 4, uncomplicated peptic ulcer — 4. Measured the optical density of venous blood plasma on a spectrophotometer SF-4A. The control was given to 8 patients (adhesive intestinal obstruction, uncomplicated peptic ulcer disease).
 Results and discussion. A number of maxima of the values of the optical density of the plasma at wavelengths λ = 3.1, 3.5, 4.3, 6.1, 6.7, 9, 17.5 micrometers were revealed. Indicators differed depending on the type of underlying disease and complications. For analysis and comparison, patients were divided into groups: abscesses, peritonitis, destructive pathology without peritonitis (appendicitis, cholecystitis) and control. At wavelengths λ = 3.1, 6.1, 6.7, 9, 17.5 micrometers, the optical density in patients with no destructive pathology is significantly lower than in patients with such pathology. In addition, the indicators differ in the presence of peritonitis, abscesses and uncomplicated destructive pathology.
 Conclusions. In the presence of acute surgical diseases of the abdominal cavity in patients, the specific maxima of the optical density of venous blood plasma in the infrared region at wavelengths λ = 3.1, 3.5, 4.3, 6.1, 6.7, 9, 17 , 5 micrometers. Changes in the parameters of optical density differ, depending on the characteristics of the underlying disease and complications and have common patterns in the perforation of hollow organs, abscesses, peritonitis, destructive uncomplicated diseases. Determination of optical density is a promising area for improving the diagnosis of ASPAC.

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