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Spontaneous coronary artery dissection: aggressive vs. conservative therapy
Behrooz K Shamloo1, Rajesh S Chintala, Ali Nasur
1Department of Internal Medicine, Division of Cardiovascular Diseases, Howard University Hospital, Washington, DC, USA. bzshamloo@gmail.com
Insights
Spontaneous coronary artery dissection (SCAD) often affects younger females. Early aggressive treatment, including bypass grafting or stenting, improves outcomes for SCAD patients compared to conservative management.
Area of Science:
- Cardiology
- Vascular Medicine
Background:
- Spontaneous coronary artery dissection (SCAD) is a rare cause of acute coronary events, particularly in young women.
- Etiology, prognosis, and treatment for SCAD remain poorly defined.
Purpose of the Study:
- To analyze demographic data and treatment outcomes for spontaneous coronary artery dissection (SCAD).
Main Methods:
- A systematic literature search identified 440 SCAD cases (1931-2008).
- Demographic and treatment data were statistically analyzed.
- Kaplan-Meier analysis assessed outcomes for interventions post-1990.
Main Results:
- SCAD predominantly affects females (70%), with 26.1% associated with pregnancy, mostly postpartum.
- An aggressive treatment strategy (2.5%) resulted in fewer interventions than conservative management (21.2%).
- Early aggressive treatment (CABG or stenting) significantly improved outcomes for isolated coronary artery lesions.
Conclusions:
- Early intervention for SCAD, including coronary artery bypass grafting (CABG) or percutaneous coronary intervention, improves patient outcomes.
- An aggressive approach reduces the need for subsequent interventions in SCAD patients.
Background:
Spontaneous coronary artery dissection (SCAD) is a rare condition that commonly presents as an acute coronary event in the younger population, especially in females of childbearing age. Generally, there is no consensus on the etiology, prognosis, and treatment of SCAD.
Methods:
The Medline database was searched for "spontaneous coronary artery dissection" between 1931 and 2008. A total of 440 cases of SCAD were identified. Demographic data were analyzed with either the Student's t-test or the chi-square test for categorical and nominal variables, respectively. Kaplan-Meier outcome analysis was used to assess the outcome of a given treatment for all patients after 1990.
Results:
SCAD was found more commonly in females with 308 (70%) cases. Pregnancy was associated with SCAD in 80 (26.1%) cases. Among pregnant patients, 67 (83.8%) developed SCAD in the postpartum period and 13 (16.2%) patients in the prepartum period. Analysis of treatment modalities showed that 21.2% of the patients who were conservatively managed after the initial diagnosis eventually required surgical or catheter-based intervention compared to 2.5% of patients who were initially treated with an aggressive strategy. Kaplan-Meier analysis showed that patients with an isolated single lesion in left or right coronary artery had a statistically significant better outcome when treated with an early aggressive strategy, including coronary artery bypass grafting (CABG) or stent placement as compared to a conservative strategy (p = 0.023, p = 0.006, respectively).
Conclusion:
Early intervention with either CABG or percutaneous coronary intervention following the diagnosis of SCAD leads to a better outcome and less need for further intervention.
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