| Summary: | <p><strong>Background</strong>: arterial hypertension is one of the most frequent chronic diseases. Its progress time and its adequate management and control are risk factors to cause renal damage.</p><p><strong>Objective</strong>: to determine the presence of renal damage in hypertensive patients admitted to the department of internal medicine of “Dr. Ernesto Guevara de la Serna” General Teaching Hospital, from October 2014 to February 2016.</p><p><strong>Method</strong>: an observational, descriptive and cross-sectional study was carried out at the institution and during the period herein mentioned. The sample was made up of 480 patients admitted to the department of internal medicine, who were given investigations that measured the renal function, such as creatinine, urea and glomerular filtration. The data were processed using descriptive statistics.</p><p><strong>Results</strong>: 42,9 % of the patients presented elevated values of creatinine and 33,7 % of urea; 41 % showed decreased rates of glomerular filtration. The pathological values of the investigations prevailed in the patients with more than 20 years of the disease progress. No patient with less than 10 years of progress showed renal damage.</p><p><strong>Conclusions</strong>: hypertensive patients with renal damage prevailed in those with progress time of hypertension for more than 20 years.</p>
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