<prompt> Answer this question truthfullyWhat does an electrocardiogram for Eisenmengers syndrome show?  <response>: <reason> Patients with Eisenmengers syndrome may show the following findings on ECG :Right axis deviation ventricular hypertrophy. ST changes Right ventricular or biventricular hypertrophy. P Pulmonale Right atrial hypertrophy. Tall R wave in V 1 and deep S wave in V 6. Microvolt T-wave alternans. Atrial or ventricular arrhythmias if complicated by heart failure. 