EFFECT OF POSTURAL CHALLENGES ON NON-INVASIVE CARDIAC OUTPUT MEASUREMENT WITH IMPEDANCE CARDIOGRAPHY IN YOUNG HEALTHY ADULTS USING NEW HORIZONTAL ELECTRODE PLACEMENT METHOD

International Journal of Biomedical and Advance Research

Pradip Barde ; Kishore Kumar Deepak

关键词: s Noninvasive, Head up tilt, Head down tilt;   

学科分类：药学、药理学、毒理学（综合）

来源: Scholar Science Journals

【 摘 要 】

Background: Cardiac output is an important hemodynamic parameter of cardiovascular system and a significant indicator of autonomic function status of a person. It can be measured invasively as well as non-invasively. Imepdance cardiography (ICG) is a promising, new, noninvasive technique to measure cardiac output. There are no studies noninvasively measuring cardiac output in healthy subject by impedance cardiography using new horizontal method of electrode placement during postural challenges.  Objective: We observed effect of postural challenges on noninvasive cardiac output measurement using ICG by new horizontal electrode placement method.  Methods: Cardiac output (CO), stroke volume (SV) and cardiac index (CI),  were measured noninvasively, before and after postural challenges namely  Head Up Tilt (HUT) of 700 and Head Down Tilt (HDT) 200, in 38 healthy male subjects (mean age-28 yrs, range 22-34 yrs).  Results: After 700 HUT the values of CO, SV and CI decreased by 1.5±0.9 l/min (31%), 25.8±11.4 ml (37%), & 0.8±0.4 l/min/m2 (27 %), respectively. HDT did not cause significant change in theses hemodynamic parameters. Conclusion: ICG successfully detected physiological changes in cardiac output following postural challenges using new horizontal electrode placement method. The study underscores utility of this simple noninvasive tool for hemodynamic assessment after postural challenge using new horizontal electrode placement method.

【 授权许可】

CC BY