TREATMENT OF HYPERTENSION WITH ANGIOTENSIN CONVERTING ENZYME INHIBITORS

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Abstract
Angiotensin converting enzyme inhibitors are effective therapy in hypertension. They are particularly useful in severe drug resistant or accelerated hypertension, in renal hypertension and in hypertensive heart failure. Although their exact mode of action has not been determined it is a consequence of the inhibition of angiotensin converting enzyme. They offer distinct advantages over conventional drugs in the treatment of high blood pressure particularly as they have no central or autonomic side effects and as a consequence the patients feel well. There is no postural effect on blood pressure and patients retain their normal cardiovascular reflex mechanisms and sexual function. They are particularly useful when combined with diuretics or salt restriction as not only do they have additive hypotensive effects but angiotensin converting enzyme inhibitors prevent the secondary hyperaldosteronism and hypokalemia associated with diuretic administration. Lastly, unlike many other forms of treatment for hypertension, renal blood flow and renal function tend to be maintained with converting enzyme inhibitors. Their overall role in the management of hypertension has yet to be determined, and the ultimate incidence of adverse effects after prolonged therapy is not yet known. They are however, an exciting new development in the treatment of hypertension.