Predicting survival with reperfusion arrhythmias during primary percutaneous coronary intervention for acute
Reuben Ilia1, Doron Zahger, Carlos Cafri
1Department of Cardiology, Soroka University Hospital and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel. iliar@bgu.ac.il
Insights
Reperfusion arrhythmia (RA) after primary percutaneous coronary intervention for ST-elevation myocardial infarction is linked to better patient characteristics and improved survival. This finding suggests RA may indicate a favorable prognosis in STEMI patients.
Area of Science:
- Cardiology
- Interventional Cardiology
- Clinical Research
Background:
- The prognostic significance of reperfusion arrhythmia (RA) following successful recanalization in ST-segment elevation myocardial infarction (STEMI) patients treated with primary percutaneous coronary intervention (PPCI) remains debated.
- Understanding this association is crucial for risk stratification and treatment optimization.
Purpose of the Study:
- This study aimed to investigate the relationship between reperfusion arrhythmia and both short-term and long-term survival outcomes in STEMI patients undergoing PPCI.
Main Methods:
- A prospective registry of consecutive STEMI patients treated with PPCI was utilized.
- Patients with suboptimal epicardial flow (TIMI flow grade < 3) post-procedure were excluded from the analysis.
Main Results:
- Reperfusion arrhythmia (RA) was observed in 29% of the 688 STEMI patients.
- Patients with RA exhibited lower rates of diabetes and hypertension, and a shorter pain-to-balloon time compared to those without RA.
- Thirty-day mortality was significantly lower in patients with RA (3.7% vs. 8.3%).
- After adjusting for covariates, RA was associated with a 54% reduction in mortality risk during a median follow-up of 466 days (HR 0.46, 95% CI 0.23-0.92).
Conclusions:
- The occurrence of RA immediately after PPCI for acute STEMI is associated with favorable clinical characteristics.
- RA identifies a subgroup of STEMI patients with a particularly favorable short- and long-term prognosis.
Background:
The significance of arrhythmia occurring after successful recanalization of an occluded artery during treatment following primary percutaneous coronary intervention for ST-segment elevation myocardial infarction is controversial.
Objectives:
To study the association of reperfusion arrhythmia with short and long-term survival.
Methods:
We used a prospective registry of consecutive STEMI patients undergoing PPCI. Patients with an impaired epicardial flow (TIMI flow grade < 3) at the end of the procedure were excluded.
Results:
Of the 688 patients in the study group, 22% were women. Mean (+/- SD) age of the cohort was 61 (+/- 14) years and frequent co-morbidities included diabetes mellitus (25%), dyslipidemia (55%), hypertension (43%) and smoking (41%). RA was recorded in 200 patients (29%). Patients with RA had lower rates of diabetes (16% vs. 30%, P < 0.01) and hypertension (48% vs. 62%, P < 0.01), and a shorter median pain-to-balloon time (201 vs. 234 minutes, P < 0.01) than patients without RA. Thirty day mortality was 3.7% and 8.3% for patients with and without RA, respectively (P = 0.04). After controlling for age, gender and pain-to-balloon time the hazard ratio for mortality for patients with RA during a median follow-up period of 466 days was 0.46 (95% confidence interval 0.23-0.92).
Conclusions:
The occurrence of RA immediately following PPCI for acute STEMI is associated with better clinical characteristics and identifies a subgroup with a particularly favorable prognosis.
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