Treatment of hypertension is the importance factor to kidney disease progression and prevents cardiovascular risk. The target blood pressure below 130/80 mmHg[3]. 228 case studies of primary hypertension showed that 50 percent men, age average 59.3 + or - 9.6
women 50 percent, age average 59.1 + or - 9.1. Systolic blood pressure (mmHg) 168.9 + or - 11.8. Diastolic blood pressure (mmHg) 95.4 + or - 8.1. The mean blood pressure (MBP) (mmHg) 119.9 + or - 9.3. Renal blood flow (RBF) in people with lower blood pressure compared with controls (988 compared to 1044) with P = 0.042. Renal blood flow decreases with age. Left and right renal flow did not differ significantly, although the absolute values of the left kidney is higher than the right kidney. Inversely correlated with blood pressure r = -0.364 , P 0.001, correlation formula: RBF