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Q. Investigation of aortic regurgitation by Electrocardiogram?

Electrocardiogram shows left ventricular dominance with voltage criteria for left ventricular hypertrophy. In moderate aortic regurgitation prominent q-waves are seen in lateral leads with iso-electric ST-segment. As the severity of AR increases and LV dilates, LVH with strain pattern appears with ST-segment depression and T-wave inversion in lateral leads. Conduction blocks may be seen in patients with post inflammatory AR or due to severe calcific aortic valve disease.

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