Non-Invasive Assessment Of Blood Flow Index In Healthy Volunteers Using Impedance Plethysmography
Journal Title: International Journal of Medical and Health Sciences - Year 2013, Vol 2, Issue 1
Abstract
Background: Impedance Plethysmography (IPG) is a simple, low cost and non–invasive tool to assess the central and peripheral blood flow in human body. The literal meaning of IPG is “Recording of instantaneous volume (of an object) by measuring electrical impedance.” There are various physical and physiological factors influencing blood flow and to ensure similar responses across institutes, each institute must establish its own normative values to screen or investigate Peripheral vascular diseases (PVDs) Goal: To set up a normative baseline data of Blood flow index (BFI) for cardiovascular laboratory in department of Physiology, Government Medical college, Bhavnagar, Gujarat. Method: The study was carried out in different segments of upper and lower extremities of healthy volunteers of different age groups of either sex on Nivomon Series computerized software of L&T Company. Results: Arterial parameters measured were Basal impedance (Z0) & Blood flow index (BFI) and analyzed statistically. Body mass index (BMI) had correlation with Z0 and BFI. Conclusion: Z0 increases as the age increases and BFI remains more or less same throughout the age groups with higher BFI in upper extremities than in lower extremities. It is suggested that IPG may become an important clinical tool to study the central as well as peripheral blood flow. This simple, harmless, inexpensive, objective and non-invasive hemodynamic test may replace other invasive hemodynamic test for screening Peripheral vascular diseases (PVDs) at any age provided that one has predetermined normative data.
Authors and Affiliations
Divyesh L Prajapati, Chintan V Parmar, Pradnya A Gokhale, Hemant B Mehta, Chinmay J Shah
Keywords
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