Prognostic significance of electrocardiogram at presentation in patients with pulmonary embolism of different severity

Among the electrocardiographic signs of RV strain/ischemia, Qr pattern in lead V1 was the only ECG abnormality associated with in-hospital mortality in high-risk patients. In not high-risk patients the demonstrated association among baseline ECG signs of RV strain/ischemia and RV dysfunction at echocardiography or troponin elevation highlights the need for early further investigations in patients with such ECG abnormalities.