NPPB and atrial fibrillation: To unveil the underdiagnosis and undertreatment of LV systolic dysfunction (LVEF < 40%) in the elderly, Olesen and colleagues (17) analyzed 260 ECG tracings and reported that 90% LV systolic dysfunction may be detected by identifying elevated NT-proBNP > 35 pmol/L, Q wave, atrial fibrillation and pacing/LBBB/ORS duration > 120 ms.