Table 1.

Preoperative chracteristics

Case	Age(y)	Sex	Previous Procedure	Interval(y)	HT	HL	Smoking	DM	CRF	MI	EF (%)
1	58	M	LITA-LAD-P	13	–	+	+	–	–	–	51
2	68	M	LITA-LAD-P	16	+	+	+	+	–	+	57
3	78	M	LITA-IEA-LAD-P	5	+	+	+	+	–	+	72
4	77	M	RITA-LAD-P LITA-D1-P LITA-SVG-AV-P	7	+	+	–	–	–	–	51

M: male; LITA: left internal thoracic artery; LAD: left anterior descending coronary artery; SVG: saphenous vein graft; IEA: inferior epigastric artery; RITA: right internal thoracic artery; D1: diagonal branch 1; AV: atrioventricular nodal branch; P: patent; HT: hypertension; HL: hyperlipidemia; DM: diabetes mellitus; CRF: chronic renal failure; MI: myocardial infarction; EF: ejection fraction of left ventricle