What finding can be associated with pulmonary embolism in an EKG?

The association of sinus tachycardia and the S1Q3T3 pattern with pulmonary embolism is well-documented in the context of EKG findings. Sinus tachycardia is a common response to hypoxia and increased stress on the heart, which can occur in the setting of pulmonary embolism due to reduced blood flow and oxygen delivery.

The S1Q3T3 pattern is characterized by a deep S wave in lead I, a Q wave in lead III, and an inverted T wave in lead III. This pattern suggests right heart strain, which is due to the increased workload on the right ventricle when it has to pump against increased pressure caused by the occlusion of pulmonary arteries. While not pathognomonic, the S1Q3T3 pattern can be a significant indicator of pulmonary embolism, particularly in the appropriate clinical context.

Recognizing these EKG changes is critical for timely diagnosis and treatment of pulmonary embolism, as they can guide clinicians in making decisions about further testing and management of the patient.