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Published on: May 26, 2022
Aldosterone escape during angiotensin-converting enzyme inhibitor therapy in essential hypertensive patients with
Insights
Aldosterone escape, a lack of aldosterone reduction, is common during angiotensin-converting enzyme (ACE) inhibitor therapy for hypertension. This phenomenon may negate ACE inhibitors' positive effects on left ventricular hypertrophy.
Area of Science:
- Cardiology
- Nephrology
- Pharmacology
Background:
- Continuous angiotensin-converting enzyme (ACE) inhibitor therapy is a cornerstone treatment for hypertension.
- However, some patients experience 'aldosterone escape,' where plasma aldosterone levels fail to decrease significantly despite ACE inhibitor use.
- The clinical implications of aldosterone escape, particularly concerning cardiovascular remodeling, require further investigation.
Purpose of the Study:
- To investigate the incidence and clinical significance of aldosterone escape in patients with essential hypertension treated with ACE inhibitors.
- To determine whether aldosterone escape impacts left ventricular hypertrophy (LVH) in these patients.
Main Methods:
- A prospective study involving 75 patients with essential hypertension treated with enalapril maleate, imidapril hydrochloride, or trandolapril for 40 weeks.
- Measurements included blood pressure, plasma renin activity, plasma aldosterone concentrations, and left ventricular mass index (LVMI).
- Patients were categorized based on the presence or absence of aldosterone escape.
Main Results:
- ACE inhibitor treatment effectively lowered blood pressure and increased plasma renin activity, but plasma aldosterone concentrations remained unchanged in the overall cohort.
- Aldosterone escape was observed in 38 out of 75 patients (50.7%).
- Patients with aldosterone escape showed no significant change in LVMI, whereas those without aldosterone escape exhibited a significant decrease in LVMI.
Conclusions:
- Aldosterone escape occurs frequently in patients with essential hypertension receiving continuous ACE inhibitor therapy.
- Aldosterone escape may counteract the beneficial effects of ACE inhibitors on left ventricular hypertrophy.
- These findings highlight the importance of monitoring aldosterone levels and considering alternative or add-on therapies in patients experiencing aldosterone escape.
Abstract:
Continuous angiotensin-converting enzyme (ACE) inhibitor therapy does not necessarily produce significant decreases in plasma aldosterone levels (aldosterone escape). We examined the role of aldosterone escape in 75 essential hypertensive patients treated with an ACE inhibitor (enalapril maleate [34 patients], imidapril hydrochloride [24 patients] or trandolapril [17 patients]) for 40 weeks. With treatment, blood pressure decreased and plasma renin activity increased, while plasma aldosterone concentrations did not change. Aldosterone escape was observed in 38 of the 75 patients and in 17 of 37 patients with left ventricular hypertrophy before treatment. Left ventricular mass index did not change in patients with aldosterone escape but decreased significantly in patients without aldosterone escape. The present study demonstrated a high incidence of aldosterone escape in patients with essential hypertension despite the use of ACE inhibitors. The results also suggest that aldosterone escape may reverse the beneficial effects of an ACE inhibitor on left ventricular hypertrophy.
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