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Long-term Prognosis in Patients With Concomitant Acute Coronary Syndrome and Aortic Stenosis
Nicholas W S Chew1, Audrey Zhang2, Joy Ong2
1Department of Cardiology, National University Heart Centre, National University Hospital, Singapore, Singapore.
Insights
Patients with moderate or severe aortic stenosis (AS) and acute coronary syndrome (ACS) face high mortality. Early intervention is crucial to mitigate risks associated with concomitant moderate or severe AS in ACS patients.
Area of Science:
- Cardiology
- Cardiovascular Medicine
- Clinical Research
Background:
- Aortic stenosis (AS) and acute coronary syndrome (ACS) share cardiovascular risk factors.
- The co-occurrence of AS and ACS is rising due to an aging population.
- Limited research exists on the prognosis of patients with both conditions.
Purpose of the Study:
- To investigate the prognosis of patients presenting with ACS and concomitant AS.
- To determine the impact of AS severity on mortality in ACS patients.
- To identify predictors of mortality in this patient cohort.
Main Methods:
- Retrospective single-centre cohort study.
- Included consecutive patients with ACS and AS from January 2011 to March 2021.
- Classified AS severity into mild, moderate, and severe based on echocardiogram; primary outcome was all-cause mortality.
Main Results:
- Of 563 patients, 106 had severe AS, 193 moderate, and 264 mild.
- All-cause mortality was significantly higher in moderate and severe AS groups compared to mild AS, both short-term and long-term.
- Moderate or severe AS independently predicted all-cause mortality (HR 1.453 and 1.873, respectively).
Conclusions:
- ACS patients with moderate or severe AS exhibit high long-term mortality, irrespective of ACS type.
- High early mortality in moderate and severe AS necessitates urgent risk mitigation strategies.
- Reduced left ventricular ejection fraction portends a poor prognosis, regardless of AS severity.
Background:
Aortic stenosis (AS) and acute coronary syndrome (ACS) share similar cardiovascular risk factors. The incidence of concomitant AS and ACS is increasing with aging population, yet studies investigating the prognosis of these patients remain scarce.
Methods:
This retrospective single-centre cohort study examined consecutive patients who presented with ACS and AS from January 1, 2011, to March 31, 2021. The cohort was divided into mild, moderate, and severe AS based on the index echocardiogram. The primary outcome was all-cause mortality.
Results:
Of 563 patients, 264 (46.9%) had mild, 193 (34.3%) moderate, and 106 (18.8%) severe AS. The mean follow-up duration was 2.5 years. All-cause mortality was higher among patients with moderate and severe AS compared with mild AS within 30 days (17.0% vs 13.0% vs 6.4%, respectively; P = 0.005) and in the long term (49.7% vs 51.4% vs 35.6%; P = 0.002). Concomitant moderate (hazard ratio [HR] 1.453, 95% confidence interval [CI] 1.020-2.068; P = 0.038) or severe AS (HR 1.873, 95% CI 1.176-2.982; P = 0.008) was an independent predictor of all-cause mortality. Kaplan-Meier curves demonstrated higher mortality in patients with moderate and severe AS compared with mild AS (P < 0.001). Similar survival trends were observed regardless of ACS type and in those with preserved left ventricular ejection fraction. Patients with reduced left ventricular ejection fraction had poor prognosis regardless of AS severity.
Conclusions:
ACS patients with concomitant moderate or severe AS have similar high long-term mortality, regardless of ACS type. The high early mortality in moderate and severe AS emphasises the imperative to attempt to mitigate this risk urgently.
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