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Review
, 125 (1), 14-22

Drug-induced Hypertension: An Unappreciated Cause of Secondary Hypertension

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Review

Drug-induced Hypertension: An Unappreciated Cause of Secondary Hypertension

Ehud Grossman et al. Am J Med.

Abstract

A myriad variety of therapeutic agents or chemical substances can induce either a transient or persistent increase in blood pressure, or interfere with the blood pressure-lowering effects of antihypertensive drugs. Some agents cause either sodium retention or extracellular volume expansion, or activate directly or indirectly the sympathetic nervous system. Other substances act directly on arteriolar smooth muscle or do not have a defined mechanism of action. Some medications that usually lower blood pressure may paradoxically increase blood pressure, or an increase in pressure may be encountered after their discontinuation. In general, drug-induced pressure increases are small and transient: however, severe hypertension involving encephalopathy, stroke, and irreversible renal failure have been reported. The deleterious effect of therapeutic agents is more pronounced in patients with preexisting hypertension, in those with renal failure, and in the elderly. Careful evaluation of a patient's drug regimen may identify chemically induced hypertension and obviate unnecessary evaluation and facilitate antihypertensive therapy. Once chemical-induced hypertension has been identified, discontinuation of the causative agent is recommended, although hypertension can often be managed by specific therapy and dose adjustment if continued use of the offending agent is mandatory. The present review summarizes the therapeutic agents or chemical substances that elevate blood pressure and their mechanisms of action.

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