The effects of propranolol on cognitive function and quality of life: a randomized trial among patients with

E J Pérez-Stable1, R Halliday, P S Gardiner

  • 1Department of Medicine, University of California, San Francisco, USA.

Insights

Propranolol treatment for diastolic hypertension showed minimal cognitive effects and no impact on mood or sexual function. These findings suggest other factors should guide beta-blocker selection for hypertension management.

Area of Science:

  • Cardiology
  • Pharmacology
  • Neuroscience

Background:

  • Diastolic hypertension is a common cardiovascular condition.
  • Beta-blockers, such as propranolol, are frequently prescribed for hypertension.
  • Concerns exist regarding potential adverse effects of beta-blockers on cognitive, depressive, and sexual functions.

Purpose of the Study:

  • To evaluate the impact of propranolol on cognitive function, depressive symptoms, and sexual function in patients with diastolic hypertension.
  • To compare propranolol's effects against a placebo in a controlled trial setting.

Main Methods:

  • A placebo-controlled trial involving 312 adult patients with diastolic hypertension.
  • Random assignment to propranolol (80-400 mg/day) or placebo.
  • Cognitive function assessed using 13 tests at baseline, 3, and 12 months.
  • Depressive symptoms and sexual function evaluated via questionnaires at baseline and 12 months.

Main Results:

  • No significant differences in 11 of 13 cognitive tests between propranolol and placebo groups at 3 or 12 months.
  • Slight, potentially clinically insignificant, differences in reaction time and errors of commission observed at 3 months.
  • No significant differences in depressive symptoms or sexual function and desire at 12 months.

Conclusions:

  • Propranolol treatment for hypertension demonstrated limited adverse effects on cognitive function, with questionable clinical relevance.
  • No adverse effects on depressive symptoms or sexual function were documented.
  • The choice of beta-blockers for hypertension management should prioritize factors beyond these specific functional outcomes.
Abstract

Related Concept Videos

Adrenergic Antagonists: Pharmacological Actions of β-Receptor Blockers01:27

Adrenergic Antagonists: Pharmacological Actions of β-Receptor Blockers

β-receptor blockers significantly impact the cardiovascular system by counteracting catecholamine-induced sympathetic responses. These medications decrease heart rate, contractility, and cardiac output, potentially leading to cardiac depression, life-threatening bradycardia, and death. Therapeutically, β-blockers function as mild antihypertensives and are utilized in treating angina pectoris and cardiac arrhythmias. However, nonselective β-blockers inhibit β2-receptors in bronchial smooth...
Adrenergic Antagonists: ɑ and β-Receptor Blockers01:31

Adrenergic Antagonists: ɑ and β-Receptor Blockers

Third-generation β-blockers, such as labetalol and carvedilol, represent a significant advancement in managing cardiovascular conditions. Unlike conventional β-blockers, which can induce peripheral vasoconstriction, third-generation drugs block α1 adrenoceptors. This promotes vasodilation through several mechanisms, such as increased nitric oxide production, inhibition of calcium ion entry, opening of potassium ion channels, and antioxidant action. Labetalol, for instance, is clinically...
Antihypertensive Drugs: Types of β-Blockers01:28

Antihypertensive Drugs: Types of β-Blockers

β receptors are classified into three subclasses: β1, β2, and β3. β1 receptors are primarily located in the heart and kidneys. When they get activated, they increase heart rate, contractility, and renin release. This process enhances blood pressure and aids in stress management. In contrast, β2 receptors are situated mainly in the lungs, blood vessels, and skeletal muscles. Upon activation, they trigger smooth muscle relaxation, causing bronchodilation and vasodilation. This widens airways and...
Heart Failure Drugs: β-Blockers01:22

Heart Failure Drugs: β-Blockers

β-adrenergic antagonists, commonly known as β-blockers, block the effects of sympathetic neurotransmitters such as noradrenaline (NA) and adrenaline (ADR). They have several beneficial effects in heart failure treatment. They reduce heart rate, the force of contraction, and cardiac muscle relaxation. They also slow the atrial-ventricular conduction rate and raise the threshold for arrhythmias. The concentration of β-blockers determines their effects on bronchodilation, vasodilation, and...
Antianginal Drugs: Nitrates and β-Blockers01:16

Antianginal Drugs: Nitrates and β-Blockers

In cardiovascular health, antianginal drugs combat angina pectoris — a condition marked by chest pain owing to diminished blood flow to the heart.
Organic nitrates,  such as nitroglycerin, play a pivotal role. Once metabolized, they liberate nitric oxide, a molecular marvel. Nitric oxide triggers guanylyl cyclase and augments cGMP production. This biochemical cascade orchestrates the relaxation of vascular smooth muscles, ushering in vasodilation and enhancing coronary blood flow. Administered...
Hypertension III: Clinical Manifestations and Diagnostic Studies01:30

Hypertension III: Clinical Manifestations and Diagnostic Studies

Hypertension is asymptomatic and also referred to as the "silent killer" until it progresses to a severe stage or causes target organ disease. Patients may experience symptoms stemming from the strain on blood vessels and tissues in various organs or the heart's increased workload.Physical exams might show no abnormalities other than high blood pressure. Signs of vascular damage, when present, correspond to the organs supplied by the affected vessels, leading to target organ damage. For...