ECG showing S1Q3T3 and right heart strain

The electrocardiogram above shows an S1 Q3 T3 pattern and inverted T waves in leads V1-V4, which are indicative of right heart strain.

ECG: electrocardiogram.

From: Cunningham T, Latino P. Pulmonary emergencies. In: Step-Up to Emergency Medicine, Plantz SH, Huecker M (Eds), Wolters Kluwer, Philadelphia 2015. Copyright © 2015. Reproduced with permission from Wolters Kluwer Health. Unauthorized reproduction of this material is prohibited.