Nonemergent Percutaneous Coronary Intervention on an Unprotected Left Main Coronary Artery Supported with Impella® Heart Pump in Patients Ineligible for Surgical Revascularization

Table 2

Procedural characteristics.

Characteristics	All	CABG ineligible	CABG eligible	p-value
	(N=331)	(N=227)	(N=104)
Number of diseased lesions per patient (>= 50% stenosis)	2.23±0.78 (331)	2.17±0.76 (227)	2.35±0.82 (104)	0.060
Lesion Location
Left Main Coronary Artery	34.5% (353/1023)	35.1% (240/683)	33.2% (113/340)	0.577
Left Anterior Descending Coronary Artery	31.5% (322/1023)	31.6% (216/683)	31.2% (106/340)	0.943
Left Circumflex Coronary Artery	23.5% (240/1023)	22.4% (153/683)	25.6% (87/340)	0.273
Right Coronary Artery	10.6% (108/1023)	10.8% (74/683)	10.0% (34/340)	0.746
TIMI Flow Pre PCI
0	1.3% (8/613)	1.6% (7/432)	0.6% (1/181)	0.447
1	1.6% (10/613)	2.1% (9/432)	0.6% (1/181)	0.295
2	12.7% (78/613)	13.2% (57/432)	11.6% (21/181)	0.690
3	84.3% (517/613)	83.1% (359/432)	87.3% (158/181)	0.223
Number of lesions treated	2.14±0.81 (331)	2.10±0.79 (227)	2.24±0.86 (104)	0.137
Number of stents placed	2.46±1.31 (328)	2.46±1.25 (225)	2.46±1.45 (103)	0.993
Patients with 1 vessel treated	0.3% (1/331)	0.0% (0/227)	1.0% (1/104)	0.314
Patients with 2 vessels treated	83.4% (276/331)	82.4% (187/227)	85.6% (89/104)	0.527
Patients with 3 vessels treated	16.3% (54/331)	17.6% (40/227)	13.5% (14/104)	0.423
TIMI Flow Post PCI
0	0.5% (4/753)	0.8% (4/527)	0.0% (0/226)	0.322
1	0.5% (4/753)	0.4% (2/527)	0.9% (2/226)	0.588
2	0.8% (6/753)	0.9% (5/527)	0.4% (1/226)	0.674
3	98.1% (739/753)	97.9% (516/527)	98.7% (223/226)	0.571
Duration of device support (hour)	1.00 [0.13,72.75]	1.02 [0.13,50.37]	0.94 [0.33,72.75]	0.160

CABG: coronary artery bypass grafting; PCI: percutaneous coronary intervention; TIMI: thrombolysis in myocardial infarction.