The paper presents the results of a study of the impact of autoPEEP (positive end-expiratory pressure) on gas exchange in the lungs, their biomechanical characteristics, the transport and consumption of oxygen by inverting the inspiration/expiration ratio under the volume-controlled mechanical ventilation of the lung (VCMVL) in patients with acute parenchymatous lung lesion, as well as how to choose the optimum inspiration/expiration ratio in VCMVL by analyzing the pattern of total PEEP (the sum of positioning and autoPEEP) in this group of patients.
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