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Published on: May 28, 2019
Predictors of No-Reflow Phenomenon in Young Patients With Acute ST-Segment Elevation Myocardial Infarction Undergoing
Turgay Celik1, Sevket Balta2, Cengiz Ozturk1
1Department of Cardiology, School of Medicine, Gulhane Military Medical Academy, Etlik, Ankara, Turkey.
Insights
No-reflow after primary percutaneous coronary intervention (pPCI) for ST-segment elevation myocardial infarction (STEMI) is predicted by female gender, longer pain to balloon times, and higher thrombus burden. Tirofiban use, however, was protective against no-reflow in young STEMI patients.
Area of Science:
- Cardiology
- Interventional Cardiology
- Vascular Medicine
Background:
- No-reflow phenomenon is a significant prognostic indicator in ST-segment elevation myocardial infarction (STEMI).
- Limited research exists on no-reflow specifically within the young STEMI patient demographic.
- Primary percutaneous coronary intervention (pPCI) is the standard reperfusion therapy for STEMI.
Purpose of the Study:
- To investigate the predictors of the no-reflow phenomenon in young patients experiencing STEMI.
- To identify demographic, clinical, and laboratory factors associated with no-reflow post-pPCI.
Main Methods:
- A cohort of young STEMI patients treated with pPCI within 12 hours of symptom onset was analyzed.
- Patients were stratified into no-reflow (Thrombolysis in Myocardial Infarction [TIMI] flow grade 0-2) and angiographic success (TIMI flow grade 3) groups.
- Multivariable logistic regression analysis was employed to determine independent predictors of no-reflow.
Main Results:
- Female gender, increased pain to balloon time, and high TIMI thrombus grade were independently associated with a higher likelihood of no-reflow.
- Tirofiban use demonstrated a protective effect, significantly reducing the odds of no-reflow.
- Elevated mean platelet volume (MPV) and platelet-lymphocyte ratio (PLR) were also identified as independent predictors of no-reflow.
Conclusions:
- Female sex, prolonged ischemia time, and high thrombus burden are key independent predictors of no-reflow in young STEMI patients undergoing pPCI.
- The medication tirofiban appears to mitigate the risk of no-reflow in this population.
- MPV and PLR may serve as useful biomarkers for predicting no-reflow in young STEMI patients.
Abstract:
No-reflow is of prognostic value in ST-segment elevation myocardial infarction (STEMI) but has not been extensively investigated in young patients. Young patients with STEMI admitted within 12 hours from symptom onset and treated by primary percutaneous coronary intervention (pPCI) were recruited. Patients were classified into 2 groups based on postintervention thrombolysis in myocardial infarction (TIMI) flow grade; no-reflow: TIMI flow grade 0, 1 or 2 (group 1; n = 27; 21 men, mean age: 42 ± 4 years); and angiographic success: TIMI flow grade 3 (group 2; n = 118; 110 men, mean age: 43 ± 4 years). Adjusted odds ratios were 13.79 for female gender (P < .001; confidence interval [CI] = 1.88-101.26), 2.09 for pain to balloon time (P < .017; CI = 1.14-3.812), 12.29 for high TIMI thrombus grade (P = .012; CI = 1.74-86.94), 0.04 for tirofiban use (P < .001; CI = 0.01-0.22), 5.19 for mean platelet volume (MPV; P < .001; CI = 2.44-11.01), and 1.008 for platelet-lymphocyte ratio (PLR; P = .034; CI = 1.001-1.016). In conclusion, female gender, pain to balloon time, high TIMI thrombus grade, tirofiban, MPV, and PLR were independent predictors of no-reflow in young patients with STEMI after pPCI.
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