METHOD FOR EVALUATING BREATHING RESERVE OF LUNGS Russian patent published in 2012 - IPC A61B5/08 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely pulmonology, and can find application in evaluating individual breathing reserves of human lungs. Substance of the method consists in X-ray examination to determine a shadow area of right and left lungs. Additionally, individual's height, weight and body surface are determined. It is followed by calculating a breathing reserve index by formula: I_BRL=S_{body surface}:(S_{right lung}+S_{left lung})- If the value I_BRL is more than 45, breathing reserve of lungs is considered to be low, the value within the range of 45-40 shows medium reserve, and the value less than 40 - high reserve. The value I_BRL exceeding 45 enables predicting postoperative respiratory failure in cardiosurgical patients.

EFFECT: use of the given invention provides higher accuracy of individual assessment of the anatomic-functional status of lungs, with finding a prognosis criteria of developing postoperative respiratory failure in cardiosurgical patients.

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