Spontaneous Coronary Artery Dissection: Current State of the Science: A Scientific Statement From the American Heart
Insights
Spontaneous coronary artery dissection (SCAD) is a key cause of heart attacks, especially in young women. Research shows SCAD requires different evaluation and treatment than typical heart disease due to unique risk factors and higher recurrence rates.
Area of Science:
- Cardiology
- Vascular Biology
- Medical Research
Background:
- Spontaneous coronary artery dissection (SCAD) is an increasingly recognized cause of acute coronary syndrome.
- It disproportionately affects young women and individuals without traditional atherosclerotic risk factors.
- Patient advocacy and improved diagnostics have heightened awareness and understanding of SCAD.
Purpose of the Study:
- To review current knowledge on SCAD, including its causes, clinical presentation, and management.
- To highlight the distinct characteristics of SCAD compared to atherosclerotic myocardial infarction.
- To identify persistent knowledge gaps in SCAD research and clinical practice.
Main Methods:
- Review of recent literature and large case series on SCAD.
- Analysis of clinical characteristics, risk factors, and outcomes.
- Synthesis of findings related to diagnosis, treatment, and associated conditions.
Main Results:
- SCAD is more common than previously thought and necessitates distinct management strategies.
- Recurrence rates are high, and SCAD is linked to female sex, pregnancy, stress, and fibromuscular dysplasia.
- SCAD differs significantly from atherosclerotic myocardial infarction in its underlying mechanisms and patient demographics.
Conclusions:
- SCAD represents a unique clinical entity requiring specialized approaches.
- Further research is crucial to address knowledge gaps in SCAD etiology, treatment, and long-term outcomes.
- Understanding SCAD's distinct features is vital for improving patient care and outcomes.
Abstract:
Spontaneous coronary artery dissection (SCAD) has emerged as an important cause of acute coronary syndrome, myocardial infarction, and sudden death, particularly among young women and individuals with few conventional atherosclerotic risk factors. Patient-initiated research has spurred increased awareness of SCAD, and improved diagnostic capabilities and findings from large case series have led to changes in approaches to initial and long-term management and increasing evidence that SCAD not only is more common than previously believed but also must be evaluated and treated differently from atherosclerotic myocardial infarction. High rates of recurrent SCAD; its association with female sex, pregnancy, and physical and emotional stress triggers; and concurrent systemic arteriopathies, particularly fibromuscular dysplasia, highlight the differences in clinical characteristics of SCAD compared with atherosclerotic disease. Recent insights into the causes of, clinical course of, treatment options for, outcomes of, and associated conditions of SCAD and the many persistent knowledge gaps are presented.
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