Association Between Timeliness of Reperfusion Therapy and Clinical Outcomes in ST-Elevation Myocardial Infarction
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Résumé
CONTEXT: Guidelines emphasize the importance of rapid reperfusion of patients with ST-elevation myocardial infarction (STEMI) and specify a maximum delay of 30 minutes for fibrinolysis and 90 minutes for primary percutaneous coronary intervention (PPCI). However, randomized trials and selective registries are limited in their ability to assess the effect of timeliness of reperfusion on outcomes in real-world STEMI patients. OBJECTIVES: To obtain a complete interregional portrait of contemporary STEMI care and to investigate timeliness of reperfusion and outcomes. DESIGN, SETTING, AND PATIENTS: Systematic evaluation of STEMI care for 6 months during 2006-2007 in 80 hospitals that treated more than 95% of patients with acute myocardial infarction in the province of Quebec, Canada (population, 7.8 million). MAIN OUTCOME MEASURES: Death at 30 days and at 1 year and the combined end point of death or hospital readmission for acute myocardial infarction or congestive heart failure at 1 year by linkage to Quebec's medicoadministrative databases. RESULTS: Of 1832 patients treated with reperfusion, 392 (21.4%) received fibrinolysis and 1440 (78.6%) received PPCI. Fibrinolysis was untimely (>30 minutes) in 54% and PPCI was untimely (>90 minutes) in 68%. Death or readmission for acute myocardial infarction or heart failure at 1 year occurred in 13.5% of fibrinolysis patients and 13.6% of PPCI patients. When the 2 treatment groups were combined, patients treated outside of recommended delays had an adjusted higher risk of death at 30 days (6.6% vs 3.3%; odds ratio [OR], 2.14; 95% confidence interval [CI], 1.21-3.93) and a statistically nonsignificant increase in risk of death at 1 year (9.3% vs 5.2%; OR, 1.61; 95% CI, 1.00-2.66) compared with patients who received timely treatment. Patients treated outside of recommended delays also had an adjusted higher risk for the combined outcome of death or hospital readmission for congestive heart failure or acute myocardial infarction at 1 year (15.0% vs 9.2%; OR, 1.57; 95% CI, 1.08-2.30). At the regional level, after adjustment, each 10% increase in patients treated within the recommended time was associated with a decrease in the region-level odds of overall 30-day mortality (OR, 0.80; 95% CI, 0.65-0.98). CONCLUSION: Among patients in Quebec with STEMI, reperfusion delivered outside guideline-recommend delays was associated with significantly increased 30-day mortality, a statistically nonsignificant increase in 1-year mortality, and significantly increased risk of the composite of mortality or readmission for acute myocardial infarction or heart failure at 1 year.
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Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,002 | 0,002 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle