Table 1. Baseline clinical and angiographic characteristics of patients with true left main distal trifurcation lesion.

Clinical characteristics		Angiographic characteristics
Data are presented as means ± SD or n (%). *Presented as median (interquartile range). IVUS: intravascular ultrasound; LAD: left anterior descending artery; LCX: left circumflex artery; LM: left main; RI: ramus intermedius.
Age, yrs	57.6 ± 8.5	Dominant left coronary artery	7 (38.9%)
Male	15 (83.3%)	Unprotected left main coronary artery	15 (83.3%)
Body mass index, kg/m2	25.2 ± 2.4	SYNTAX I score	29.1 ± 1.9
Hypertension	15 (83.3%)	SYNTAX II score	25.9 ± 5.0
Diabetes mellitus	6 (33.3%)	Medina type: 1,1,1,1	16 (88.9%)
Hypercholesterolemia	10 (55.6%)	Pre-reference vessel diameter by IVUS, mm
Smoker	12 (66.7%)	LM	4.5 ± 0.5
Acute myocardial infarction	1 (5.6%)	LAD	3.5 ± 0.3
Old myocardial infarction	1 (5.6%)	LCX	2.8 ± 0.3
Unstable angina	10 (55.6%)	RI	2.2 ± 0.2
History of coronary artery bypass graft	0	Pre-plaque burden, %
Left ventricular ejection fraction, %	57.8 ± 6.5	Distal LM	64.4 ± 7.0
Estimated glomerular filtration rate, mL/min per 1.73 m2	79.11 ± 13.99	Ostium of LAD	74.9 ± 7.8
Hemoglobin A1c, %	5.8 ± 1.0	Ostium of LCX	65.1 ± 7.6
C-reactive protein, mg/L	6.9 (3.4−9.8)*	Ostium of RI	41.6 ± 10.7