[Diagnosis of fatigue in flight personnel based on cardiodynamic data]

By Doppler cardiography systolic acid diastolic time time intervals and cardiac contractility were measured in 22 pilots during interflight periods. Certain cardiodynamic parameters showed significant differences in the pilots as compared to 24 nonpilots. It is indicated that these parameters should be regularly monitored between flights in order to prevent fatigue of the flight personnel, to detect early developments of cardiac insufficiency, and maintain pilot longevity.