The Effect Of Laser Radiation And Viscosity Of Red Blood Cells On Erythrocytes Sedimentation Rate ( ESR)

Abstract

The purpose of this study is to investigate the in vitro effect of the hematocrit (packed cell volume) (HCT) , the viscosity of red blood cells and the He-Ne laser radiation on Erythrocyte Sedimentation Rate (ESR) . He-Ne laser wave length of 632.8ηm was used for irradiation with 5mm diameter beam spot on blood samples, with power density of about 30mw/cm2 .The irradiation times were 10,20,30,40,50,60mint; so the doses of irradiation were 18, 36, 54, 72, 90, 108 J/cm2 .The samples of blood were obtained from 18 volunteers ,and each sample was divided into two samples for irradiation and control . The ESR was measured after laser irradiation and was compared with un-irradiation control .the results of this study show the increase of ESR is related inversely with (HCT), the sedimentation rate decreases with the increasing of viscosity and the laser radiation reduce the erythrocyte sedimentation rate (ESR) of blood samples.