Non-atherosclerotic causes of acute coronary syndromes
Thomas M Waterbury1, Giuseppe Tarantini2, Birgit Vogel3
1Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA.
Insights
Non-atherosclerotic conditions cause many acute coronary syndromes (ACS). Identifying these causes, like spontaneous coronary artery dissection or vasospasm, is crucial for effective diagnosis and treatment.
Area of Science:
- Cardiology
- Internal Medicine
Background:
- Atherosclerosis and plaque disruption are primary causes of acute coronary syndrome (ACS).
- However, non-atherosclerotic processes contribute significantly to ACS events, necessitating distinct diagnostic and therapeutic approaches.
- A high index of suspicion is vital when obstructive coronary artery disease is absent.
Purpose of the Study:
- To review five key non-atherosclerotic causes of ACS.
- To outline diagnostic findings, management strategies, and prognostic data for these conditions.
Main Methods:
- Literature review focusing on non-atherosclerotic ACS etiologies.
- Discussion of intravascular imaging techniques for diagnosis.
- Synthesis of management and prognostic information.
Main Results:
- Five non-atherosclerotic causes of ACS are detailed: spontaneous coronary artery dissection, coronary artery embolism, vasospasm, myocardial bridging, and stress-induced cardiomyopathy (Takotsubo syndrome).
- Diagnostic criteria, treatment pathways, and outcomes for each are presented.
Conclusions:
- Non-atherosclerotic conditions represent a significant subset of ACS cases.
- Accurate diagnosis using intravascular imaging and clinical suspicion is essential for appropriate management.
- Understanding these alternative pathways improves patient outcomes in ACS.
Abstract:
Atherosclerosis and plaque disruption have a central pathological role in the majority of patients who present with an acute coronary syndrome (ACS), but non-atherosclerotic processes are also important contributors to a substantial number of ACS events and require different diagnostic and therapeutic strategies. In the absence of obstructive coronary artery disease, intravascular imaging techniques might be needed to delineate the underlying aetiology, together with a high index of suspicion for other important causes of ACS. In this Review, we discuss five non-atherosclerotic causes of ACS, including spontaneous coronary artery dissection, coronary artery embolism, vasospasm, myocardial bridging and stress-induced cardiomyopathy (Takotsubo syndrome). Important diagnostic findings, management strategies and prognostic data for these non-atherosclerotic mechanisms of ACS are reviewed.
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