Evaluation of the bioelectric activity of the heart during antiorthostatic hypokinesia using traditional and modified orthogonal ECG leads

Turbasov, V.D.; Artamonova, N.P.; Nechaeva, E.I.

Kosmicheskaia Biologiia i Aviakosmicheskaia Meditsina 24(1): 42-44


ISSN/ISBN: 0321-5040
PMID: 2329770
Document Number: 366980
The informativeness of 3 adjusted orthogonal leads and 12 conventional ECG leads under conditions of simulated weightlessness were compared. Twenty-nine male patients in head-down tilt with a gradient of -8% were studied. It was observed that changes in ECG occurring due to the effect of head-down tilt had a quality typical for this condition. The changes were functional in nature, and were dependent on the degree to which motor activity was limited. A comparative study of changes in ECG indices during 30-day head-down tilt did not reveal any advantages of the 3 adjusted orthogonal leads in comparison with conventional ECG leads.

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