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Information

Following acute ST-segment elevation MI without successful reperfusion: Pathologic Q waves (0.04 s and 25% of total QRS height) in leads shown in Table 111-1; acute non-ST-segment elevation MI shows ST-T changes in these leads without Q-wave development (Fig. 111-4). A number of conditions (other than acute MI) can cause Q waves (Table 111-2).

Outline

Section 8. Cardiology