Which ECG findings indicate aortic stenosis (AS)?

Updated: May 07, 2019
  • Author: Xiushui (Mike) Ren, MD; Chief Editor: Terrence X O'Brien, MD, MS, FACC  more...
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T-wave inversion and ST-segment depression in leads with predominantly positive QRS complexes are common. ST depression exceeding 0.3 mV in patients with aortic stenosis indicates LV strain and suggests severe LVH. Occasionally, a septal pseudoinfarct pattern can be seen. Left atrial enlargement with a preterminal negative p wave in lead V1 is noted in 80% of cases of severe isolated aortic stenosis. The presence of left atrial enlargement suggests an associated mitral valve process.

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