EMS ECGs: S1Q3T3, is it pathognomonic for acute pulmonary embolism

Baltimore City EMS Cases with Dr. Amal Mattu


A 63-year-old woman presents to the emergency department with palpitations. The following ECG was obtained by EMS prior to arrival:

Before watching this week’s video, ask yourself these questions:

  1. What ECG abnormalities do you notice?
  2. What is the underlying rhythm?
  3. What is the significance of the ST-segment abnormalities seen?