Conference proceeding
Haemodynamic responses to varying postural stress
Proceedings of 1994 20th Annual Northeast Bioengineering Conference
1994
Abstract
The authors present data demonstrating early cardiovascular responses to simulated gravity levels between 1G and -1G. A noninvasive, cardiac impedance cardiography system (the IQ System) was used to evaluate cardiac output (CO), stroke volume (SV), ventricular ejection time (VET), ejection fraction (EF), and pre-ejection period (PEP). Seven subjects were positioned at selected angles of +90/spl deg/, +45/spl deg/, 0/spl deg/, -45/spl deg/, and -90/spl deg/ for five minutes at each angle. These postural changes simulate different gravitational forces on the human body ranging from +1G to -1G. This study's findings demonstrate an overall increasing trend in CO, SV, VET and EF, and a slight decrease in PEP with postural changes from +90/spl deg/ to -90/spl deg/. Findings may aid responses to low and negative gravity environments.< >
Metrics
8 Record Views
Details
- Title
- Haemodynamic responses to varying postural stress
- Creators
- R Paz - Drexel UniversityS Al-Dhaheri - Drexel UniversityH Sun - Drexel UniversityL Hrebien - Drexel University
- Publication Details
- Proceedings of 1994 20th Annual Northeast Bioengineering Conference
- Conference
- 1994 20th Annual Northeast Bioengineering Conference, 20th
- Publisher
- IEEE
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Electrical and Computer Engineering
- Other Identifier
- 991019182771004721