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Acute Q-wave posterior infarction
Interpretation by Matthew Schumaecker
EKG recorded and edited by Dr. M. Rosengarten, MUHC, 1997
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Acute Q-wave posterior infarction
Interpretation by Matthew Schumaecker
EKG recorded and edited by Dr. M. Rosengarten, MUHC, 1997
This tracing shows sinus tachycardia at a rate of 115/minute. The PR interval is120ms. There are large R waves in the anterior leads V1-V3. This could be the reciprocal equivalent of Q waves posteriorly. These leads also show slight anterior ST segment depression and peaked, inverted T waves which can be interpreted as posterior injury and ischemia (i.e., reciprocal ST segment elevation and peaked T waves).
Although true posterior wall infarctions are usually associated with an inferior infarction (not seen in this tracing), this tracing does suggest a possible acute true posterior Q wave infarction. The use of posterior EKG electrodes can be helpful cases of suspected true posterior Q wave infarction.
