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Interventional Diagnostic Procedure: A Practical Guide for the Assessment of Coronary Vascular Function
Published on: March 15, 2022
The Who, What, Why, When, How and Where of Vasospastic Angina
John F Beltrame1, Filippo Crea, Juan Carlos Kaski
1The Queen Elizabeth Hospital Discipline of Medicine, University of Adelaide, Central Adelaide Local Health Network.
Insights
Functional coronary artery disease (CAD), specifically vasospastic angina, is often overlooked. Early diagnosis and vasodilator therapy are crucial for preventing major adverse events in patients with this condition.
Area of Science:
- Cardiology
- Vascular Medicine
- Internal Medicine
Background:
- Ischemic heart disease encompasses structural and functional coronary circulation disorders.
- Atherosclerotic coronary artery disease (CAD) is well-understood, unlike functional CAD.
- Functional CAD, including vasospastic angina, warrants greater clinical attention.
Purpose of the Study:
- To review contemporary aspects of vasospastic angina, a form of functional CAD.
- To highlight the importance of diagnosing and managing coronary artery spasm.
- To provide a state-of-the-art consensus on vasospastic angina.
Main Methods:
- Review of contemporary literature on vasospastic angina.
- Analysis of clinical presentation, diagnostic criteria, and treatment strategies.
- Emphasis on provocative spasm testing for diagnosis.
Main Results:
- Vasospastic angina presents as angina at rest, responsive to nitrates, with transient ECG changes.
- Diagnosis may require provocative spasm testing.
- Prompt diagnosis and vasodilator therapy (e.g., calcium-channel blockers) can prevent major adverse events.
Conclusions:
- Vasospastic angina is a significant cause of functional CAD.
- Diagnosis is essential for preventing adverse cardiovascular events.
- Further research is needed on pathophysiology, natural history, and refractory cases.
Abstract:
Ischemic heart disease involves both "structural" and/or "functional" disorders of the coronary circulation. Structural atherosclerotic coronary artery disease (CAD) is well recognized, with established diagnostic and treatment strategies. In contrast, "functional CAD" has received limited attention and is seldom actively pursued in the investigation of ischemic heart disease. Vasospastic angina encompasses "functional CAD" attributable to coronary artery spasm and this "state of the art" consensus statement reviews contemporary aspects of this disorder. Patients with vasospastic angina typically present with angina at rest that promptly responds to short-acting nitrates and is associated with transient ischemic ECG changes. Although spontaneous episodes may be documented, provocative spasm testing may be required to confirm the diagnosis. It is important to diagnose vasospastic angina because it may be associated with major adverse events that can be prevented with the use of appropriate vasodilator therapy (eg, calcium-channel blockers) and the avoidance of aggravating stimuli (eg, smoking). Future studies are required to clarify the underlying pathophysiology, natural history and effective treatments for patients refractory to conventional therapy.
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