[Results of vectorelectrocardiographic examinations during and after long space flights aboard the orbital complex "Sal'iut-6"--"Soiuz"].

: In long-term space flights cardiac bioelectric activity was measured by vector-electrocardiography using ECG in 12 standard leads. Most marked changes in the form of a decrease in the integral spatial repolarization vector were seen postflight. This parameter did not return to normal during one month postflight. Depolarization vector and vector orientation remained essentially unchanged.