[Orthostatic low blood pressure in patient suffering from hypertension, in external cardiology consultation].

Unlabelled: This work was aimed to describe the epidemiological, clinical, biological and electrical aspects of orthostatic low blood pressure (LBP) within patients with high blood pressure (HBP) in the cardiology department of the Kati University Hospital. This was a prospective cross-sectional study conducted between June 1, 2012 and May 31, 2013. It included all the patients with HBP regularly assessed for at least a month, following their treatment and having no other treatments which can induce a orthostatic LBP.

Results: With a total of 300 subjects with high blood pressure, 42 subjects presented an orthostatic LBP with or without suggestive clinical demonstrations, among which 16 men and 26 women, with an average age of 55 year. In the HBP population, the orthostatic LBP had a 14% frequency (42/300), the sex ratio was 0.61. Most of the patients were 55 years old or more. The HBP was not controlled in 66.7% of cases. Twelve percent of the patients with orthostatic LBP were diabetics. The number of antihypertensive drug used did not appear to influence the appearance of an orthostatic LBP. Monotherapy was associated with an orthostatic LBP in 47.6% of cases and this monotherapy used the calcic inhibitors in 62% of the cases. Orthostatic low blood pressure is frequent within patient with HBP undergoing treatment. It must be systematically looked for, especially in the uncontrolled HBP, among older subjects, the diabetics, and those with a personal history of neurological disease.