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[Predictors of no-reflow phenomenon after primary percutaneous coronary intervention]
Bernardo M Rivera-Linares1, Martín Bedolla-Barajas, Jaime Morales-Romero
1Servicio de Cardiología, Hospital Civil de Guadalajara "Doctor Juan I. Menchaca", Guadalajara, Jalisco, México. drmbedbar@gmail.com.
Insights
The no-reflow phenomenon occurs in 28.1% of ST-elevation myocardial infarction (STEMI) patients after primary percutaneous coronary intervention. Key predictors include Killip class II, multiple Q waves on ECG, angioplasty alone, and intracoronary thrombus.
Area of Science:
- Cardiology
- Interventional Cardiology
- Acute Myocardial Infarction Research
Background:
- The no-reflow phenomenon is a frequent complication following primary percutaneous coronary intervention for ST-elevation myocardial infarction (STEMI).
- Understanding its incidence and predictors is crucial for improving patient outcomes.
Purpose of the Study:
- To determine the cumulative incidence of the no-reflow phenomenon in STEMI patients undergoing primary PCI.
- To identify clinical and procedural predictors associated with the occurrence of no-reflow.
Main Methods:
- Retrospective analysis of 71 STEMI patients.
- Categorization into no-reflow and adequate reperfusion groups.
- Logistic regression analysis to identify predictors.
Main Results:
- Cumulative incidence of no-reflow was 28.1% (20 out of 71 patients).
- Univariate predictors included elevated CK-MB, Killip class II, TIMI flow 0, multiple Q waves, reperfusion therapy type, and intracoronary thrombus.
- Multivariate predictors identified: Killip class II (OR=9.3), ≥2 Q waves (OR=1.8), angioplasty alone (OR=19.9), and intracoronary thrombus (OR=11.9).
Conclusions:
- Early identification of predictors like Killip class II, ECG findings, reperfusion strategy, and thrombus presence is vital.
- Implementing targeted measures based on these predictors can help reduce the incidence of no-reflow phenomenon.
Background:
No-reflow phenomenon is a common event in patients with acute myocardial infarction with ST elevation (STEMI) who underwent primary percutaneous coronary intervention. The objective is to determine the cumulative incidence of no-reflow phenomenon and some predictors related to its occurrence.
Methods:
We retrospectively analyzed the reports of 71 patients with STEMI. Subjects were categorized in two groups, those with no-reflow phenomenon and those without it; their clinical findings were compared. Predictive factors were identified by logistic regression analysis.
Results:
We identified 20 patients with no-reflow phenomenon (with a cumulative incidence of 28.1 %) and 51 with adequate reperfusion. In the univariate analysis the following predictors were related to the no-reflow phenomenon: CK-MB = 160 UI/L, Killip class = II, TIMI flow 0, having more than two Q waves in ECG, the form of reperfusion therapy and the presence of intracoronary thrombus. The multivariate logistic regression analysis identified Killip class = II (OR = 9.3, p = 0.008), = two Q waves in ECG (OR = 1.8, p = 0.05), angioplasty as unique reperfusion therapy (OR = 19.9, p = 0.017) and the presence of intracoronary thrombus (OR = 11.9, p = 0.008) as predictors of no-reflow phenomenon.
Conclusions:
The early detection of predictors of no-reflow phenomenon will establish measures aimed to reduce its presentation.
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