The value of Hendry’s Score in predicting reduced ejection fraction in chronic heart failure patients with sinus rhythm

Objectives: To evaluate the role of Hendry’s score based on the electrocardiogram in predicting heart failure with reduced ejection fraction. Methods: This is a cross-sectional study, including 91 inpatient heart failure patients at the Vietnam Heart Institute, divided into two groups: heart failure with reduced left ventricular ejection fraction (EF ≤ 40 %) and heart failure with preserved left ventricular ejection fraction (EF ≥ 50%). The collected information included the general characteristics of the disease group (age, gender, etiology, clinical symptoms), blood test NT-proBNP, creatinine, electrolytes, echocardiogram, and electrocardiogram. Results: Forty-seven people were diagnosed with HFpEF, and 44 suffered from HFrEF. Multiple logistic regression analysis revealed certain ECG variables that were independent predictors of HFrEF, i.e., left atrial hypertrophy (LAH), QRS duration > 100 ms, right bundle branch block (RBBB), ST-T segment changes, and prolongation of the QT interval. Based on Hendry’s Score, we obtained a score for HFpEF of -1 to +3. At the same time, HFrEF had a score of +4 to +6 with 81.3% sensitivity, 84% specificity, a 70.5% positive predictive value, an 87.2% negative predictive value, and an accuracy of 86%. Conclusions: The scoring system derived from this study, including the presence or absence of LAH, QRS duration > 100 ms, RBBB, ST-T segment changes, and prolongation of the QT interval can be used to predict the type of HF with satisfactory sensitivity and specificity.