Antihypertensive Effect of Trimazosin in Essential Hypertension

Lee, Choong Kee; Lee, Hyoung Woo; Jun, Jae Eun; Park, Wee Hyun; Park, Hi Myung

Abstract

The antihypertensive effect of trimazosin was studied in 24 cases of essential hypertension, which include 9 cases with pretreatment diastolic pressure of 114mmHg or more, for a period of 4 weeks. The average pretreatment systolic and diastolic blood pressures were approximately 175mmHg and 114mmHg, respectively. The treatment was started with 100mg of trimazosin daily in 2 divided doses and and the drug was titrated upward at weekly interval by 100mg up to 400mg/day depending on the response of the blood pressures. Routine blood counts, urinalyses, liver and kidney function tests, electrolyte balance, total serum cholesterol and triglyceride were determined before and at the end of treatment. The diastolic blood pressure fell 10mmHg or more in 20 out of 24 cases(83.3%), and in 12 cases out of 20 favorable responders it fell to 90mmHg or below. The pretreatment diastolic blood pressure in 4 nonresponders was all 115mmHg or more. The antihypertensive effect appeared during the first week of therapy and progressively increased until the end of treatment week without causing postural hypotension. Unpleasant symptoms appeared in 12 cases during treatment, which include dizziness, headache, numbness in the extremities and tinnitus in the decreasing order of frequency. However, these symptoms were mild and transient in all cases disappearing spontaneously despite continued medication. No significant biochemical changes in the blood were recorded after treatment. We conclude that trimzosin seems to be a safe and effective antihypertensive drug particularly useful for the treatment of mild to moderate hypertension.

Antihypertensive Effect of Trimazosin in Essential Hypertension

Abstract

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