Long-term systemic arterial blood pressure control with nicardipine

Area of Science:

• Cardiovascular Medicine
• Pharmacology
• Clinical Hypertension

Background:

• Essential hypertension remains a significant global health concern, necessitating effective and well-tolerated long-term treatment options.
• Oral antihypertensive agents play a crucial role in managing blood pressure and reducing cardiovascular risk.
• Nicardipine, a calcium channel blocker, has been investigated for its efficacy in hypertension management.

Purpose of the Study:

• To evaluate the long-term efficacy and tolerability of orally administered nicardipine in patients with essential hypertension.
• To determine the optimal dosing regimen and sustained blood pressure control over a one-year treatment period.
• To assess the safety profile and adverse events associated with nicardipine therapy.

Main Methods:

• A multi-phase study involving 250 patients with essential hypertension, including a placebo washout, open-label dose titration, double-blind regimen comparison, and extended open treatment.
• Patients received oral nicardipine for up to one year, with blood pressure monitored throughout various study phases.
• A final double-blind, placebo-controlled phase assessed the sustained effect of nicardipine by comparing continued treatment with placebo withdrawal.

Main Results:

• Approximately 79% of patients achieved a supine diastolic blood pressure (BP) below 90 mm Hg or a 10 mm Hg reduction from baseline.
• Blood pressure reduction was more pronounced in patients over 60 years of age.
• Nicardipine demonstrated sustained efficacy over one year, with a mean supine diastolic BP of 85 mm Hg, and was statistically superior to placebo in preventing BP increase upon withdrawal.

Conclusions:

• Nicardipine is a well-tolerated and effective oral antihypertensive agent for the long-term management of essential hypertension.
• The efficacy of nicardipine is sustained throughout one year of treatment, with a favorable safety profile.
• Nicardipine offers a valuable therapeutic option for patients requiring sustained blood pressure control.