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Pathologic Q Waves: Difference between revisions
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;Definition of a pathologic Q wave | ;Definition of a pathologic Q wave | ||
:Any Q-wave in leads V2–V3 >= 0.02 s or QS complex in leads V2 and V3 | :Any Q-wave in leads V2–V3 >= 0.02 s or QS complex in leads V2 and V3 | ||
:Q-wave >= 0.03 s and > 0.1 mV deep or QS complex in leads I, II, aVL, aVF, or | :Q-wave >= 0.03 s and > 0.1 mV deep or QS complex in leads I, II, aVL, aVF, or V4–V6 in any two leads of a contiguous lead grouping (I, aVL,V6; V4–V6; II, III, and aVF) | ||
V4–V6 in any two leads of a contiguous lead grouping (I, aVL,V6; V4–V6; II, III, | |||
and aVF) | |||
:R-wave >= 0.04 s in V1–V2 and R/S > 1 with a concordant positive T-wave in the | :R-wave >= 0.04 s in V1–V2 and R/S > 1 with a concordant positive T-wave in the | ||
absence of a conduction defect | absence of a conduction defect | ||