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Vectorcardiographic changes during extended space flight
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | King, P. Brown, D. Stanton, K. Stoop, D. Janusz, W. Smith, R. F. |
| Copyright Year | 1974 |
| Description | To assess the effects of space flight on cardiac electrical properties, vectorcardiograms were taken on the 9 Skylab astronauts during the flights of 28, 59, and 84 days. The Frank lead system was used and observations were made at rest; during 25%, 50% and 75% of maximum exercise; during a short pulse of exercise (150 watts, 2 minutes); and after exercise. Data from 131 in-flight tests were analyzed by computer and compared to preflight and postflight values. Statistically significant increase in QRS vector magnitude (six of nine crewmen); T vector magnitude (five of nine crewmen); and resting PR interval duration (six of nine crewmen) occurred. During exercise the PR interval did not differ from preflight. Exercise heart rates inflight were the same as preflight, but increased in the immediate postflight period. With the exception of the arrhythmias, no deleterious vectorcardiographic changes were observed during the Skylab missions. |
| File Size | 8451569 |
| Page Count | 21 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19750006320 |
| Archival Resource Key | ark:/13960/t04z02j34 |
| Language | English |
| Publisher Date | 1974-11-01 |
| Access Restriction | Open |
| Subject Keyword | Aerospace Medicine Physical Exercise Cardiovascular System Heart Rate Astronaut Performance Spacecrews Electrocardiography Electrophysiology Skylab Program Weightlessness Vectorcardiography Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
