Correlation of Anderson-Wilkins score and Sclarovsky-Birnbaum score with Myocardial Salvage Index in patients with ST-segment elevation myocardial infarction after primary percutaneus coronary intervention

Background: Patients presenting with acute myocardial infarction with ST-segment elevation (STEMI) are recommended to undergo primary percutaneous coronary intervention (PPCI) as a reperfusion therapy to maximize myocardial salvage and maintain myocardial viability. The extent of the myocardial salvage index (MSI) is greatly infl uenced by the onset and severity of myocardial ischemia, which can be assessed using the Anderson-Wilkins score and the Sclarovsky Birnbaum score. Objective: This study aims to determine the effect of the Anderson-Wilkins score and the Sclarovsky Birnbaum score on the electrocardiogram-based myocardial salvage index in patients with STEMI undergoing PPCI. Material and methods: We conducted a hospital-based cross-sectional analytical study from March 1st, 2024, to May 31st, 2024. All STEMI patients who underwent PPCI and met the inclusion criteria had their initial ECG analyzed using the Anderson-Wilkins and Sclarovsky-Birnbaum scores, with an ECG-based myocardial salvage index (MSI) assessment conducted on the last day of hospitalization. Results: Out of a total of 60 study subjects, 70% of the sample patients were men, with an average age of 57.4 years. The median Anderson-Wilkins score was 2.25 (interquartile range (IQR) 1.52 - 3.0), with an AW score ≥ 3 observed in 17 patients (28.3%). Meanwhile, grade III ischemia severity (SB score = 3) was found in 52 patients (86.7%). The median total ischemic time was 850 min (IQR 570-1290), with a total ischemic time of < 720 min found in 23 patients (38.3%). The AW score showed a strong correlation with MSI (p < 0.001, r = 0.588), whereas the SB score did not (p = 0.107, r = 0.163). Conclusion. The Anderson-Wilkins score shows a strong correlation with the myocardial salvage index in patients with acute myocardial infarction with ST-segment elevation (STEMI) undergoing primary percutaneous coronary intervention.