- ECG changes in Pulmonary Embolism • LITFL • ECG Library
SI QIII TIII pattern – deep S wave in lead I, Q wave in III, inverted T wave in III (20%) This “classic” finding is neither sensitive nor specific for PE
- S1Q3T3 pattern on ECG in pulmonary embolism
S1Q3T3 pattern in ECG is seen in acute pulmonary embolism [1] S1Q3T3 pattern means the presence of an S wave in lead I (indicating a rightward shift of QRS axis) with Q wave and T inversion in lead III
- ECGlibrary. com: Acute pulmonary embolus
Learn electrocardiography by seeing examples of the various abnormalities
- ECG Diagnosis: Pulmonary Embolism - PMC
12-lead ECG from a 68-year-old woman with new onset dyspnea on exertion Demonstrates sinus tachycardia, prominent S wave in lead I, with Q wave and T wave inversion in lead III (S 1 Q 3 T 3 sign), with inverted T waves in leads V 1 -V 6 ST-segment elevation in leads aVR and V 1 is also present
- Pulmonary Embolism on the Electrocardiogram - My EKG
Systemic thrombolysis is the treatment of choice for patients with high-risk PE, and parenteral anticoagulation should be initiated with unfractionated heparin
- S1Q3T3 electrocardiographic pattern in saddle pulmonary embolism
This case report highlights a patient with an acute “saddle” PE exhibiting a distinct pattern on electrocardiogram (ECG) associated with submassive PEs known as S1Q3T3
- Pulmonary Embolism - BCEHS
S1Q3T3 (12-25%) (pressure overload of the right ventricle) Rapid conveyance to hospital, including in cardiac arrest Further Reading Reference Stein PD, Woodard PK, Weg JG, Wakefield TW, Tapson VF, Sostman HD, Sos TA, Quinn DA, Leeper KV, Hull RD, Hales CA, Gottschalk A, Goodman LR, Fowler SE, Buckley JD (2007)
- What are the implications of an S1Q3T3 pattern on an electrocardiogram . . .
The S1Q3T3 pattern on ECG, mentioned in the question, is a specific finding that may be associated with PE, particularly in the context of right ventricular strain 1 However, this finding is not specific to PE and can be seen in other conditions as well
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