[The characteristics of the effect of different shapes of the gas flow rate curves during artificial pulmonary ventilation].

Five curves reflecting the rate of gas flow into the lungs during artificial ventilation of the lungs (AVL) are compared. The estimations demonstrate that the optimal distribution of gas in the lungs is attained at the peak of the rate at the beginning and during the first third of inhalation phase. At a constant flow rate the increase of the volume is constant, at maximal flow rate at the beginning and during the first third of inhalation the highest increase of the volume is observed during the first third of inhalation, at sinusoidal and increasing flow it is observed during the second third of inhalation. The maximal peak pressure in the airways was observed with the flow increasing, but the mean pressure associated with the curve of this shape was the lowest. The mean pressure is the highest at decreasing flow and at maximal flow during the first third of inhalation.