A comparative study of high level laser and low level laser and temperature on the erythrocytes sedimentation rate values in healthy people : in vitro study

Abstract EN

Background :The effects of laser irradiation with 632.8 and 2100 nm on Erythrocyte Sedimentation Rate (ESR) in blood samples from healthy peopleblood were comparatively studied in vitro and study the effect of environmental temperature.

Objective : This study was designed to show the effect of He-Ne laser , HO-YAG laser and effect of environmental temperature on Erythrocyte Sedimentation Rate (ESR) .

Subject & Methods : The study of case – control cross sectional design included 40healthy persons (male and female) with age group (20-45 year) , Workplace in the laboratory of physiology and medical physicsthe time between April 2016 to July 2016.

He-Ne laser (LJL 40-HA, Shanghai Research Institute of Laser Technology) wave length of 632.8ηm was used for irradiation with 5mm diameter beam spot on blood samples, with power density 30mw/cm2 and HO-YAG laser irradiation wave length 2100nm ( Karl Storz – Endoskope , Germany ),output power is ( 0.5J) .The irradiation times were (5min ) , The samples of blood were obtained from 40 contributors and each sample was separated into three samples for irradiation and control .All statistical analysis was performed withstatistical package graph Pad software For those with significant difference.