Effect of spaceflight on cardiovascular responses to upright posture in a 77-year-old astronaut

Authors
Rossum, AC Ziegler, MG Meck, JV
Citation
Ac. Rossum et al., Effect of spaceflight on cardiovascular responses to upright posture in a 77-year-old astronaut, AM J CARD, 88(11), 2001, pp. 1335
Citations number
19
Categorie Soggetti
Cardiovascular & Respiratory Systems","Cardiovascular & Hematology Research
Journal title
AMERICAN JOURNAL OF CARDIOLOGY
ISSN journal
00029149 → ACNP
Volume
88
Issue
11
Year of publication
2001
Database
ISI
SICI code
0002-9149(200112)88:11<1335:EOSOCR>2.0.ZU;2-V
Abstract
We studied neuroendocrine and hemodynamic responses to standing before and after spaceflight in a 77-year-old male astronaut and compared them with th ose of 20 younger astronauts. With standing, the older astronaut had greate r maintenance of stroke volume and cardiac output, larger increases in plas ma norepinephrine levels, but smaller increases in heart rate and periphera l resistance than the younger astronauts, which is a pattern typical of the geriatric population.