[Change in glomerular filtration rate in hypertensive patients in Vitória-ES]

As monitoring of renal function, it is used the estimation of glomerular filtration rate (GFR). This study aimed to estimate the GFR by means of the Cockcroft-Gault equation in hypertensive patients in the Municipality of Vitoria-ES. It is a transversal study of secondary data with 754 hypertensive patients attended in health facilities in 2009. For statistical analysis, there has been used the chi-square test. The female sex, overweight and uncontrolled blood pressure predominated. The average age was 58.18 years (± 13.52) and the serum creatinine (SCr) 0.81 mg / dl (± 0.28). The prevalence of reduced GFR was 19% when from 30 to 59 ml/min and 1.6% when from 29 to 15 ml/min. The prevalence of reduced GFR was 15 times higher in the elderly, 4.93 times higher in those with elevated SCr, 2.19 times in low-weight hypertensives and 1.6 times more prevalent in men. The study showed the importance of monitoring renal function with a view to early intervention and postponement of kidney function loss in hypertensive patients.