Group 1 N= 45 Group 2 N= 45 Control Group n= 45 P value Range Mean SD Range Mean SD Range Mean SD Serum NO (Mmol\L) 30 – 82 48.200 15.830 28 - 85 48.667 17.332 22 – 35 27.533 3.502 <0.001 Urine NO (Mmol\L) 99 – 300 181.467 51.289 85 – 350 173.600 67.092 75 - 135 94.067 17.077 <0.001 RI of right kidney 0.6 – 0.7 0.665 0.016 0.6 – 0.7 0.661 0.017 0.5 – 0.6 0.593 0.021 <0.001 RI of left kidney 0.6 - 0.7 0.658 0.017 0.6 – 0.7 0.657 0.019 0.5 – 0.6 0.592 0.015 <0.001 Mean resistive index 0.64 – 0.68 0.661 0.012 0.63 -0.68 0.659 0.015 0.57- 0..62 0.592 0.015 <0.001

Table 2: Comparison between the three studied groups regarding their serum and urine nitric oxide and renalresistive indexes(ANOVA test).