Assessment of the effect of body mass index on common carotid Arteries’ Resistive indeces Using Doppler Ultrasound.

Abstract

The purpose of the study was to measure the resistive indeces of common carotid arteries for examining their susceptibility of being changed due to changing in body mass index, gender and age , in addition to its suggested possibility of detecting early atherosclerosis deposit in previous studies by increasing in its numerical value in atherosclerotic artery this study aimed to discover and investigate this privilege. This study was a prospective study conducted in ultrasound clinic of college of radiological sciences in a period of time between October 2014 to August 2015 , The overall sample was 54 subjects their ages ranged between 18 to 24, mean age 21.25 SD 3.65 with body mass index ranged between 18.47 to 43.68, with mean 26.43 SD 5.32. Females were 34 accounted for 63% , males 20 accounted for 37% , divided into three groups, Normal weight subjects were 23 accounted for 42.6%, their BMI below 25, Overweight subjects were 17 accounted for 31.5% their BMI between 25 to 30, Obese subject were 14 accounted for 25.9% their BMI above 30. The mean of RRI for normal weight was 0.75 with SD 0.037 and the mean for over-weight was 0.78 with SD 0.046, the mean for obese was 0.76 with SD 0.059. The mean of LRI for normal weight was 0.76 with SD 0.09, the mean for overweight was 0.78 with SD 0.043, the mean for obese was 0.77 with SD 0.049. The overall mean of RRI and LRI for the whole sample collectively for RRI was 0.76 with SD 0.047, and for LRI was 0.77 with SD 0.045. The study has concluded that, there is no effect for body mass index on resistive indeces of common carotid arteries, and there is a variation in numerical values of resistive indeces of common carotid artery between males and females the mean of RRI for males was 0.77 and of LRI was 0.79, the means for females were 0.76 in both RRI & LRI. In addition to that the study has found linear correlation for left resistive indeces with age.