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[Calcium antagonists: a potent vasodilatory principle and alternative basic antihypertensive therapy]
Schweizerische Medizinische Wochenschrift
|November 19, 1983
Summary
Calcium channel blockers like nicardipine and verapamil effectively lower blood pressure in essential hypertension patients. These drugs are a viable alternative to diuretics, especially for elderly and low-renin individuals.
Area of Science:
- Cardiovascular Pharmacology
- Hypertension Research
- Clinical Therapeutics
Context:
- Essential hypertension exhibits enhanced forearm vasoconstriction in response to calcium influx.
- Calcium antagonists (nicardipine, verapamil) were investigated for their effects on blood pressure and vascular function.
- Normotensive subjects served as a comparison group for vasoconstriction studies.
Purpose:
- To evaluate the efficacy of calcium antagonists in treating essential hypertension.
- To compare the antihypertensive effects of verapamil and nifedipine.
- To identify predictors of antihypertensive response to calcium antagonists.
Summary:
- Calcium antagonists demonstrated enhanced calcium influx-dependent vasoconstriction in hypertensive patients compared to normotensive individuals.
- Chronic treatment with verapamil and nifedipine resulted in comparable reductions in blood pressure in 104 hypertensive patients.
- Antihypertensive response correlated positively with pre-treatment blood pressure and patient age, and negatively with plasma renin activity.
Impact:
- Calcium antagonists represent a potential alternative to diuretics as first-line antihypertensive therapy.
- Findings suggest specific patient subgroups (elderly, low-renin) may particularly benefit from calcium antagonist treatment.
- This research contributes to optimizing hypertension management strategies through personalized drug selection.