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The Egyptian Heart Journal
Fig. 1 | The Egyptian Heart Journal

Fig. 1

From: Role of QRS fragmentation in 12-lead surface ECG in prediction of isolated epicardial coronary artery ectasia and its anatomical distribution in patients without acute coronary syndromes

Fig. 1

Twelve-lead surface ECG recording for one of our study population showing different patterns of QRS fragmentation in inferior, anterior, and lateral leads (R’ in V1, notched R wave in V2, notched S wave in II and V4–6). This patient was discovered to have CAE in LAD, LCX, and RCA by invasive CA. A magnified view of lead V3 is shown with 2 positive and 2 negative waves with a normal QRS complex duration

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