GEMS–RCPSG: ‘Is Academic Medicine for Me?’ National Conference 2011, 19 November 2011

Abstract

It is commonly held that a normal electrocardiography (ECG) rules out heart failure (HF). In older populations with HF, 98% of patients have been reported to have major ECG abnormalities. Anecdotally, young patients with HF have been noted to have ECGs without major abnormalities. The aim of this study was to determine the proportion of patients aged under 65 years with HF lacking major ECG abnormalities. Data were collected for 100 consecutive admissions with HF (aged ,65 years) with echocardiogram and ECG available. ECGs were independently assessed by two cardiologists; disagreements were resolved by a third. Ejection fraction was quantified using the biplane Simpson's. Majorly abnormal ECGs contained !1 of Q waves, left ventricular hypertrophy, bundle branch block or atrial fibrillation. Minor abnormalities of ECG also recorded; these included atrial enlargement, bradycardia, tachycardia, broadening of QRS complex, poor R wave progression, left/right axis deviation, first-degree atrioventricular block and non-specific ST-T wave changes. The mean age was 50.0 years. Seventy-six had major abnormalities on ECG, 22 had minor abnormalities and two showed no abnormalities. Ejection fractions were similar across all groups (28.6 + 2.8%, 28.4 + 3.4% and 25.5 + 6.9%, respectively). Twenty-four percent of patients with HF (aged ,65 years) do not have major ECG abnormalities. Patients aged ,65 years with a clinical suspicion of HF but without major ECG abnormalities should undergo further investigation.