The No-reflow Phenomenon: Is it Predictable by Demographic factors and Routine Laboratory Data?

Area of Science:

• Cardiology
• Interventional Cardiology
• Biomedical Science

Background:

• Coronary no-reflow phenomenon is a serious complication of percutaneous coronary interventions (PCI).
• It significantly worsens patient outcomes and survival rates.
• Understanding factors predicting no-reflow is crucial for improving PCI success.

Purpose of the Study:

• To evaluate the correlation between the no-reflow phenomenon and various demographic, biochemical, and anatomical factors.
• To identify predictors of no-reflow following primary PCI in patients with acute ST-elevation myocardial infarction (STEMI).

Main Methods:

• A study of 306 patients (193 male) with acute STEMI undergoing primary PCI.
• Collected demographic data, biochemistry results, Thrombolysis in Myocardial Infarction (TIMI) grade, and TIMI frame count (TFC).
• Analyzed correlations between no-reflow and identified factors.

Main Results:

• Patients with no-reflow (Group 2) had significantly longer symptom-to-procedure and door-to-procedure times, higher serum creatinine, hs-CRP, and Neutrophil to Lymphocyte Ratio (NLR).
• TFC showed a negative correlation with male gender and positive correlations with age, diabetes mellitus, hs-CRP, WBC count, and NLR.
• Age > 62.5 years and serum creatinine > 0.89 mg/dL optimally predicted no-reflow.

Conclusions:

• Female gender, older age, diabetes mellitus, multi-vessel disease, delayed reperfusion, and elevated NLR predict no-reflow risk after primary PCI.
• These findings aid in identifying high-risk patients for no-reflow.
• Early identification and management of these factors can potentially improve PCI outcomes.