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Cardiac contractility and conduction: a comparison of antihypertensives

B Greenberg1

  • 1Division of Cardiology, Oregon Health Sciences University, Portland 97201-3098.

American Journal of Kidney Diseases : the Official Journal of the National Kidney Foundation
|October 1, 1990
PubMed

Insights

This review examines first-line antihypertensive agents, focusing on their cardiac effects in patients with cardiovascular disease. Diuretics and ACE inhibitors have minimal cardiac impact, while beta-blockers and calcium channel blockers offer specific benefits and considerations.

Area of Science:

  • Cardiology
  • Pharmacology

Background:

  • The 1988 Joint National Committee report recommended four classes of first-line antihypertensive agents.
  • Understanding the cardiac effects of these agents is crucial for patients with co-existing cardiovascular diseases.

Purpose of the Study:

  • To review the cardiac effects of first-line antihypertensive agents.
  • To assess the impact of these agents on heart rate, atrioventricular nodal conduction, and myocardial contractility.

Main Methods:

  • Review of existing literature on antihypertensive agents.
  • Analysis of effects on cardiac parameters in patients with cardiovascular conditions.

Main Results:

  • Diuretics and angiotensin-converting enzyme inhibitors exhibit no significant direct cardiac effects.
  • Beta-blockers can inhibit cardiac stimulation and benefit patients post-myocardial infarction.
  • Calcium channel blockers, though heterogeneous, can be selected for potent peripheral vasodilation to minimize cardiac effects.

Conclusions:

  • The choice of antihypertensive agent should consider its specific cardiac effects, especially in patients with cardiovascular disease.
  • Newer agents like isradipine show promise for targeted arterial vasodilation and improved safety profiles.

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