A comparison between left ventricular ejection time measurement methods during physiological changes induced by simulated microgravity.

ABSTRACT:

New findings

What is the central question of this study? First, we validated easy-to-use oscillometric left ventricular ejection time (LVET) against echocardiographic LVET. Second, we investigated progression of left ventricular ejection time index (LVETI), pre-ejection period index (PEPI), total electromechanical systole index (QS2I) and PEP/LVET ratio during 60 days of head-down tilt (HDT). What is the main finding and its importance? The LVET_osci and LVET_echo showed good agreement in effect direction. Hence, LVET_osci might be useful to evaluate cardiovascular responses during space flight. Moreover, the approach might be useful for individual follow-up of patients with altered ejection times. Furthermore, significant effects of 60 days of HDT wer

SUBMITTER: Orter S 

PROVIDER: S-EPMC9303723 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature