P193 BLOOD PRESSURE CHANGES IN THE IMMEDIATE POST OPERATIVE PERIOD OF LIVE-RELATED KIDNEY DONORS IN AN INDIAN COHORT: SHOULD WE BE LOOKING MORE?

Background & Objective: Kidney donation is associated with physiological changes (hyperfiltration, changes in renin-angiotensin-aldosterone system & vascular tone) and its effects can be more pronounced in the elderly. The immediate reduction in GFR after nephrectomy can pose a risk for development or worsening of hypertension. There is a paucity of data determining the impact of reduced GFR on BP in post-operative period. Our study aims to analyze the hemodynamics in the post-operative period after nephrectomy. Methods This was a prospective observational study of 30 donors who underwent live-related Donor Nephrectomy. Parameters like demography, pre- and post-nephrectomy BP (reading taken daily for every 3 hours till post-operative day (POD) 4 using BPL oscillometric device) were studied. Continuous variables were were expressed as mean & standard deviation. The Student's paired t-test was used for comparison using SPSS Windows software. Results The age of donors ranged from 23-73 years. Mean SBP/DBP was 112.69 ± 5.44/76.77 ± 3.78 mmHg in donors <50 years, while in donors aged >50 years the mean SBP/DBP was 126.6 ± 7.9/81.7 ± 3.82 mmHg. Post-donation in donors aged <50 years (17 donors), mean S.B.P/DBP on POD 1 was 108.38 ± 4.77/76.20 mmHg followed by 108.92 ± 4.24/76.84,110.12 ± 5.42, 114 ± 4.8/78.88 ± 2.66 on POD-2, 3 & 4 respectively. After Nephrectomy in donors aged more than 50 years(13 donors), mean SBP/DBP on POD 1 was 124.38 ± 4.56/78.20 mmHg followed by 126.40 ± 4.54/79.88,127.72 ± 6.22, 130.22 ± 3.8/84.58 ± 4.24 on POD-2, 3 & 4 respectively. The BP on POD-4 was significantly higher in donors with age more than 50 years than donors with age less than 50 years (p<0.05). Conclusion: After nephrectomy, blood pressure changes in the immediate post-operative period in the elderly need to be monitored closely. Frequent BP monitoring after nephrectomy should be implemented to determine risk of HTN in kidney donors.