Related Experiment Video
Updated: Aug 10, 2026

06:39
Intracoronary Acetylcholine Provocation Testing for Assessment of Coronary Vasomotor Disorders
Published on: August 18, 2016
[Angina pectoris caused by dynamic coronary obstruction and beta-blockers]
Minerva Cardioangiologica
|May 1, 1989
Summary
Beta-blockers, like atenolol, effectively treat cardiac ischemia with a vasomotor component. Atenolol shows comparable or superior results to nifedipine, with potential for combined therapy.
Area of Science:
- Cardiology
- Pharmacology
Context:
- Cardiac ischemia with a coronary vasomotor component presents a complex clinical challenge.
- Understanding the efficacy of beta-blockers in managing these specific ischemic conditions is crucial.
Purpose:
- To review the clinical outcomes of beta-blocker treatment for cardiac ischemia involving coronary vasomotor dysfunction.
- To evaluate the effectiveness of atenolol compared to other agents like nifedipine.
Summary:
- Beta-blockers, particularly the cardioselective atenolol, demonstrate significant therapeutic effectiveness in mixed forms of cardiac ischemia (fixed and dynamic coronary stenosis).
- Clinical results indicate atenolol's efficacy is at least comparable, and potentially superior, to the calcium antagonist nifedipine.
- The review discusses potential mechanisms for these observed clinical effects and suggests additive benefits from combining beta-blockers with nifedipine.
Impact:
- Provides evidence supporting the use of atenolol in managing cardiac ischemia with vasomotor components.
- Highlights the potential for combination therapy with beta-blockers and calcium antagonists for enhanced patient outcomes.
Related Concept Videos
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...
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...
Angina I: Introduction
Definition and Symptoms: Angina (angina pectoris) is chest pain or discomfort caused by myocardial ischemia, which occurs when the heart muscle receives insufficient oxygen-rich blood. It typically manifests as pressing, squeezing, or crushing sensations in the chest and may radiate to the shoulders, arms, neck, jaw, or back.Primary Cause: In a healthy state, the coronary arteries can dilate (widen) to increase blood flow and meet the increased oxygen demand during physical activity or...
Angina II: Classification
Angina, also known as angina pectoris, is a chest pain resulting from diminished blood flow to the heart muscle and is often a symptom of coronary artery disease. Angina presents several variants with distinctive attributes, etiologies, and therapeutic approaches. The main types of angina include stable, unstable, variant (Prinzmetal's), microvascular, intractable, and silent ischemia.Stable angina is caused by atherosclerosis, which leads to the formation of plaques that narrow the coronary...
Angina III: Clinical Manifestations and Assessment
Angina manifests as chest pain, tightness, or squeezing discomfort typically located behind the breastbone. It can radiate to the neck, jaw, shoulders, and inner aspects of the upper arms, most commonly the left arm. Patients may experience shortness of breath, fatigue, profuse sweating, dizziness, indigestion, heartburn, palpitations, anxiety, and vomiting as accompanying symptoms. This pain often lasts a few minutes and is triggered by physical exertion, emotional stress, heavy meals, or cold...
Angina IV: Management
IntroductionThe management of angina requires a comprehensive approach that includes pharmacological therapies, medical procedures, and lifestyle modifications.Pharmacological TherapiesAntiplatelet agents, such as aspirin, clopidogrel, prasugrel, and ticagrelor, play a pivotal role in preventing thrombus formation in patients with angina. These medications inhibit platelet aggregation and reduce the likelihood of myocardial infarction and other cardiovascular events.Anticoagulants, including...
Angina V: Nursing Management
Angina, a symptom of myocardial ischemia, requires a structured nursing management approach to ensure effective care and prevent complications like myocardial infarction. Comprehensive nursing care involves assessing, diagnosing, planning, implementing interventions, and evaluating outcomes, all tailored to the individual patient's needs.Patient AssessmentNursing assessment begins with a detailed subjective evaluation of symptoms, which typically include chest pain or pressure radiating to the...

