Hubungan Skor PQRST dengan Fungsi Sistolik Ventrikel Kiri pada Pasien Infark Miokard Akut Non-Elevasi Segmen ST di Rumah Sakit Umum Pusat Haji Adam Malik Medan

Abstract

Introduction: Left ventricular ejection fraction (LVEF) was not included in previous models for risk stratification in NSTEMI patients, but its reduction portends a worse prognosis. Several studies have characterized electrocardiographic (ECG) patterns correlated with left ventricular dysfunction in this population. The PQRST score is a score that can predict reduced LVEF in NSTEMI patients. This study aims to determine the relationship between PQRST score and left ventricular systolic function in NSTEMI patients. Methods: This is a cross-sectional study of 171 patients with NSTEMI at RSUP Haji Adam Malik Medan. Data was collected from April 2023 until the sample was fulfilled. The PQRST score was calculated to be classified into a high risk score and a low risk score. Bivariate test was conducted to assess the relationship between the two variables. Furthermore, an analysis with the ROC curve was performed to assess the PQRST score in predicting a decrease in LVEF and mortality during hospitalization. Result: The number of patients with reduced LVEF was 93 (54.4%) patients. There is a relationship between the PQRST score group and reduced LVEF (p<0.001). The results of the ROC analysis showed that the PQRST score was a good predictor to predict LVEF (p<0.001; AUC=0.95). The PQRST score could predicted inhospital mortality, but not better than the GRACE score (p<0.001; AUC 0.78 and p<0.001; AUC 0.80). Conclusion: The PQRST score has a relationship with left ventricular systolic function and could predict LVEF in NSTEMI patients at Haji Adam Malik General Hospital Medan.