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Calcium channel blockers: their pharmacologic and therapeutic role in hypertension
1Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA. mweir@medicine.umaryland.edu
Insights
Calcium channel blockers (CCBs) are crucial for managing hypertension, especially in African Americans. Their effectiveness in combination therapy is driving a resurgence in their use for better blood pressure control and reduced cardiovascular risk.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Hypertension prevalence is rising in the US, disproportionately affecting African Americans.
- Many patients have inadequately controlled blood pressure (BP), often requiring multiple medications.
- Calcium channel blockers (CCBs) are a major class of antihypertensives, with dihydropyridine and nondihydropyridine subclasses.
Purpose of the Study:
- To examine the pharmacologic and clinical effects of CCBs in essential hypertension.
- To understand the role of CCBs in specific patient groups, including African Americans and those with renal disease.
- To elucidate the reasons behind the renewed popularity of CCBs in combination therapy.
Main Methods:
- Review of pharmacologic properties of CCBs.
- Analysis of clinical trial data on CCB efficacy and safety.
- Examination of CCB use in diverse patient populations.
Main Results:
- CCBs remain a cornerstone of hypertension management.
- Their efficacy in combination regimens is key to improved BP control.
- CCBs are effective in specific populations like African Americans and patients with renal disease.
Conclusions:
- CCBs are integral to modern hypertension treatment strategies.
- Fixed-dose combination regimens featuring CCBs offer improved BP control and cardiovascular risk reduction.
- Understanding CCB pharmacology and clinical application is vital for optimizing patient outcomes.
Abstract:
The prevalence of hypertension is increasing steadily in the US, particularly among African Americans. It is now clear that a large proportion of patients are inadequately controlled, with many patients requiring at least two agents to achieve their target BP. Calcium channel blockers (CCBs), comprising two subclasses--dihydropyridines and nondihydropyridines--have been for many years one of the mainstays of hypertension therapy. However, the use of CCBs as monotherapy has recently been overshadowed by the introduction of newer classes of agents such as angiotensin receptor blockers. Examining the pharmacologic and clinical effects of CCBs in essential hypertension and among specific patient groups (e.g. African Americans, patients with renal disease) paves the way for understanding why these agents are currently enjoying a resurgence in popularity as the basis for several fixed-dose combination regimens that promise to improve BP control and reduce the risk of cardiovascular events.
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