Compliance with guidelines and 1-year mortality in patients with acute myocardial infarction: a prospective study
François Schiele1, Nicolas Meneveau, Marie France Seronde
1Department of Cardiology, University Hospital Jean-Minjoz, Baulevard Fleming, 25000 Besançon, France. francois.schiele@ufc-chu.univ-fcomte.fr
Insights
Adherence to acute myocardial infarction (MI) guidelines significantly impacts patient survival. Higher guideline compliance correlates with reduced 1-year mortality, emphasizing the importance of implementing these recommendations.
Area of Science:
- Cardiology
- Clinical Research
- Public Health
Background:
- Risk scoring systems can predict mortality in acute myocardial infarction (MI) patients.
- The impact of guideline-recommended therapy on MI patient outcomes is not well-documented.
Purpose of the Study:
- To assess the influence of guideline compliance on 1-year survival in acute MI patients.
- To evaluate this influence considering patient condition at admission.
Main Methods:
- A 6-month prospective registry of acute MI patients in a defined area.
- Development of a risk score based on initial presentation.
- Creation of a compliance index based on patient characteristics, MI type, and in-hospital management (revascularization, medications).
Main Results:
- 754 patients (333 STEMI, 421 NSTEMI) were included, with 1-year follow-up.
- Median compliance index was 0.66; 1-year mortality rate was 11.5%.
- Independent predictors of mortality: MI type, risk score, and compliance index (higher compliance associated with lower mortality).
Conclusions:
- A strong relationship exists between guideline implementation extent and 1-year mortality in acute MI.
- This relationship persists regardless of initial risk score or MI type.
- Thorough guideline implementation is crucial for improving acute MI patient outcomes.
Aims:
In patients with acute myocardial infarction (MI), mortality can be predicted by risk scoring systems, but the impact of therapy recommended by guidelines is poorly documented. The aim of this study was to determine, taking into account the patient's condition at admission, to what extent the degree of guideline compliance influences the 1-year survival of patients admitted for acute MI.
Methods And Results:
A 6-month registry was carried out in a geographically limited area, prospectively including all patients with acute MI. A risk score based on initial presentation, and a compliance index based on patient characteristics, type of MI, in-hospital management (including revascularization strategies and use of recommended drugs) were established. Patients were clinically followed at 1 year. A total of 754 patients, 333 ST elevation MI and 421 non-ST elevation MI, were included. The median compliance index (percentage of optimal compliance with guidelines) was 0.66 (95% CI 0.5;8.3). One-year mortality rate was 11.5%. By logistic regression, three variables were independently related to mortality: type of MI [OR=2.6 (1.5;4.3)], risk score [OR=2.4 (1.9;3.1) per additional 10%], and compliance index [OR=0.8 (0.7;0.9) per additional 10%].
Conclusion:
A clear relationship between the extent of guideline implementation, and 1-year mortality was shown and this relationship remained strong after stratification on the risk score at admission and the type of MI. These data emphasize the need for thorough implementation of guidelines to improve the outcome of patients suffering from acute MI.
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