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Captopril in mild and severe hypertension
Clinical and Experimental Pharmacology & Physiology
|September 1, 1980
Summary
Captopril effectively controlled mild hypertension in most patients, often requiring additional medications. However, it was less effective for severe, resistant hypertension and caused side effects like taste disturbances and rash.
Area of Science:
- Cardiology
- Pharmacology
- Nephrology
Background:
- Essential hypertension remains a significant global health concern.
- Treatment-resistant hypertension poses a clinical challenge, necessitating novel therapeutic approaches.
- Angiotensin-converting enzyme (ACE) inhibitors, such as captopril, have emerged as important antihypertensive agents.
Purpose of the Study:
- To evaluate the efficacy and tolerability of captopril in patients with mild essential hypertension.
- To assess the effectiveness of captopril in managing severe, treatment-resistant hypertension.
- To investigate the relationship between baseline plasma renin concentration and blood pressure response to captopril.
Main Methods:
- A clinical study involving two groups of hypertensive patients: mild essential hypertension (n=10) and severe treatment-resistant hypertension (n=9).
- Patients received captopril, with the potential addition of diuretics and/or propranolol.
- Supine blood pressure measurements were recorded.
- Plasma renin concentration was measured to assess correlation with blood pressure response.
Main Results:
- Captopril successfully controlled supine blood pressure in 9 out of 10 patients with mild hypertension, with four requiring the addition of propranolol.
- No correlation was observed between the initial plasma renin concentration and the extent of blood pressure reduction in the mild hypertension group.
- Captopril, in combination with other antihypertensives, controlled blood pressure in only 4 out of 9 patients with severe, treatment-resistant hypertension.
- Adverse effects included reversible dysgeusia (altered taste) in four patients and a skin rash in one patient.
Conclusions:
- Captopril demonstrates significant efficacy in managing mild essential hypertension, often in conjunction with other antihypertensive agents.
- The effectiveness of captopril is limited in patients with severe, treatment-resistant hypertension.
- Captopril is generally well-tolerated, with reversible dysgeusia and skin rash being the primary observed side effects.