Features of electrocardiogram in patients with stenosis of the proximal right coronary artery

Figures

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  Figure 1.. Electrocardiograms of each culprit lesion with single coronary artery stenosis. (A) Proximal right coronary artery (RCA) with 95% stenosis. (B) Distal RCA with 100% stenosis. (C) Proximal left circumflex artery (LCX) with 100% stenosis. (D) Distal LCX with 100% stenosis.

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  Figure 2.. Comparison of receiver operating characteristic (ROC) curves between the values of lead I plus lead V1 and the values that ST-segment of lead III was more than lead II according to three conditions (the combined variable considered each ST deviation in lead I and V1 was ST depression in lead I > 0 mm and ST elevation in lead V1 > 0.5 mm by ROC curve). (A) The values of lead I < 0 mm + V1 > 0.5 mm were defined if leads II, III, and aVF were all > 0 mm (area under the curve [AUC; I + V1], 0.840; AUC [III > II], 0.585). (B) The values of lead I < 0 mm + V1 > 0.5 mm were defined regardless of whether leads II, III, and aVF were all > 0 mm, and the ST-segment in lead III was compared to the ST-segment in lead II using |absolute value| (AUC [I + V1], 0.769; AUC [III > II], 0.619). (C) The values of lead I < 0 mm + V1 > 0.5 mm were defined if two contiguous leads of II, III, and aVF were < 1 mm and the ST-segment in lead III was compared to the ST-segment in lead II (absolute value) (AUC [I + V1], 0.659; AUC [III + II], 0.656)