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A risk score to predict bleeding in patients with acute coronary syndromes
Roxana Mehran1, Stuart J Pocock, Eugenia Nikolsky
1Columbia University Medical Center and Cardiovascular Research Foundation, New York, New York 10032, USA. rmehran@crf.org
Insights
A new risk score identifies patients with acute coronary syndromes (ACS) at high risk for major bleeding. This score aids in implementing tailored treatment strategies to reduce bleeding complications and improve patient outcomes.
Area of Science:
- Cardiology
- Clinical Risk Prediction
- Hemorrhagic Complications
Background:
- Hemorrhagic complications are associated with increased mortality in acute coronary syndromes (ACS) patients.
- Predicting bleeding risk is crucial for optimizing treatment strategies in ACS.
Purpose of the Study:
- To develop a practical risk score for predicting major bleeding in patients with ACS.
- To identify predictors of major bleeding and its association with mortality.
Main Methods:
- Utilized data from 17,421 ACS patients from the ACUITY and HORIZONS-AMI trials.
- Developed an integer risk score using multivariable logistic regression.
- Analyzed baseline and treatment-related predictors of major bleeding.
Main Results:
- Identified 6 baseline predictors (sex, age, creatinine, WBC, anemia, ACS type) and 1 treatment variable (anticoagulation strategy) for major bleeding.
- The risk score accurately differentiated bleeding risk from 1% to over 40%.
- Major bleeding independently predicted a 3.2-fold increase in mortality, particularly non-CABG-related bleeding.
Conclusions:
- A simple risk score effectively identifies ACS patients at high risk for non-CABG-related bleeding.
- This score aids in implementing targeted treatment strategies to mitigate bleeding risk and mortality.
- Risk stratification for bleeding is essential for personalized ACS management.
Objectives:
The aim of this study was to develop a practical risk score to predict the risk and implications of major bleeding in acute coronary syndromes (ACS).
Background:
Hemorrhagic complications have been strongly linked with subsequent mortality in patients with ACS.
Methods:
A total of 17,421 patients with ACS (including non-ST-segment elevation myocardial infarction [MI], ST-segment elevation MI, and biomarker negative ACS) were studied in the ACUITY (Acute Catheterization and Urgent Intervention Triage strategY) and the HORIZONS-AMI (Harmonizing Outcomes with RevasculariZatiON and Stents in Acute Myocardial Infarction) trials. An integer risk score for major bleeding within 30 days was developed from a multivariable logistic regression model.
Results:
Non-coronary artery bypass graft surgery (CABG)-related major bleeding within 30 days occurred in 744 patients (7.3%) and had 6 independent baseline predictors (female sex, advanced age, elevated serum creatinine and white blood cell count, anemia, non-ST-segment elevation MI, or ST-segment elevation MI) and 1 treatment-related variable (use of heparin + a glycoprotein IIb/IIIa inhibitor rather than bivalirudin alone) (model c-statistic = 0.74). The integer risk score differentiated patients with a 30-day rate of non-CABG-related major bleeding ranging from 1% to over 40%. In a time-updated covariate-adjusted Cox proportional hazards regression model, major bleeding was an independent predictor of a 3.2-fold increase in mortality. The link to mortality risk was strongest for non-CABG-related Thrombolysis In Myocardial Infarction (TIMI)-defined major bleeding followed by non-TIMI major bleeding with or without blood transfusions, whereas isolated large hematomas and CABG-related bleeding were not significantly associated with subsequent mortality.
Conclusions:
Patients with ACS have marked variation in their risk of major bleeding. A simple risk score based on 6 baseline measures plus anticoagulation regimen identifies patients at increased risk for non-CABG-related bleeding and subsequent 1-year mortality, for whom appropriate treatment strategies can be implemented.
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