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A member asked:

What does qs in 111 mean and qr 1/3 in avf mean as well as probable inferior infarct on a ecg ?

A doctor has provided 1 answer

The interpreter is commenting on the prominent size of Q waves in limb leads 3 & AVF which can be findings in a scar in the inferior wall of the left ventricle. However, to diagnose a probable old inferior wall infarction ( scar) one would have to also see a prominent and wide Q wave in limb lead 2, the other limb lead ( in addition to 3&AVF) reflecting the inferior wall of the left ventricle

Answered 6/24/2023

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