Table 1

Baseline characteristics for cases of UPLMS PCI by CSA, NSTEACS, STEMI−CS and STEMI+CS

CSA
n=3799
NSTEACS
n=5114
STEMI−CS
n=1020
STEMI+CS
n=749
Missing (%)*
Demographics
Mean (SD) age, years69.3 (11.2)72.4 (12.1)68.0 (13.7)68.2 (12.7)135 (0.1)
Age >80 years (%)696/3799 (18.3)1566/5111 (30.6)231/1018 (22.7)131/749 (17.5)
Male (%)2788/3765 (74.1)3307/5091 (65.0)732/1018 (71.9)547/746 (73.0)63 (0.6)
Medical history
Previous MI (%)1105/3446 (32.1)1863/4630 (40.2)161/956 (16.8)125/673 (18.6)982 (9.2)
Previous PCI (%)1183/3779 (31.3)971/5048 (19.2)99/1006 (9.8)80/733 (10.9)120 (1.1)
Recent thrombolysis (%)163/4447 (3.7)19/956 (2.0)10/729 (1.4)757 (11.0)
Family history of CAD (%)1611/3250 (49.6)1783/4228 (42.2)265/846 (31.3)185/557 (33.2)1811/16.9)
Diabetes mellitus (%)755/3651 (20.7)1184/4905 (24.1)159/973 (16.3)132/690 (19.1)471 (4.4)
History of renal disease (%)148/3757 (3.9)464/5072 (9.2)31/1017 (3.1)29/745 (3.9)93 (0.9)
Left ventricular systolic function (LVSD)
Normal (EF ≥50%) (%)1960/2667 (73.5)1616/3527 (45.8)125/380 (32.9)43/350 (12.3)3767 (35.2)
Moderate LVSD (EF 30%–49%) (%)466/2667 (17.5)1183/3527 (33.5)167/380 (44.0)98/350 (28.0)
Severe LVSD (EF<30%) (%)241/2667 (9.0)728/3527 (20.6)88/380 (23.2)209/350 (59.7)
Angiographic findings
LMS stenosis
 <50%987/3500 (28.2)962/4714 (20.4)246/966 (25.5)75/701 (10.7)806 (7.5)
 ≥50%2513/3500 (71.8)3752/4714 (79.6)720/966 (74.5)626/701 (89.3)
Flow in IRA
 TIMI 0 (%)58/1197 (4.9)101/1450 (7.0)454/881 (51.5)391/661 (59.2)6501 (60.8)
 TIMI 1 (%)30/1197 (2.5)113/1450 (8.0)82/881 (9.3)91/661 (13.8)
 TIMI 2 (%)81/1197 (6.8)209/1450 (14.4)153/881 (17.4)99/661 (15.0)
 TIMI 3 (%)1028/1197 (85.9)1027/1450 (70.8)192/881 (21.8)80/661 (12.1)
Procedure
Requirement for mechanical ventilation17/3270 (0.5)217/4648 (4.7)51/931 (5.5)251/699 (35.9)1145 (10.7)
Arterial access
 Femoral (%)2014/3722 (54.1)2608/5038 (51.8)420/1001 (42.0)519/729 (71.2)192 (1.8)
 Radial (%)1693/3722 (45.4)2398/5038 (47.6)579/1001 (57.8)208/729 (28.5)
 Others (%)15/3722 (0.4)32/5038 (0.6)2/1001 (0.2)2/729 (0.3)
Vessels attempted
 LMS only (%)1047/3799 (27.6)1440/5114 (28.2)282/1020 (27.7)238/749 (31.8)0
 LMS and another vessel (%)2752/3799 (72.4)3674/5114 (71.8)738/1020 (72.4)511/749 (68.2)
Total number stents used
 0 (%)322/3786 (8.5)267/5091 (5.2)54/1018 (5.3)68/743 (9.2)46 (0.4)
 1 (%)1118/3786 (29.5)1617/5091 (31.8)304/1018 (29.9)259/743 (34.9)
 >1 (%)2346/3786 (62.0)3207/5091 (63.0)660/1018 (64.8)416/743 (56.0)
Glycoprotein IIb/IIIa inhibitor696/3565 (19.5)1396/4855 (28.8)559/969 (57.7)453/729 (62.1)566 (5.3)
Diagnostic device (IVUS)1671/3611 (46.3)1725/4860 (35.5)225/968 (23.2)64/728 (8.8)515 (4.8)
Diagnostic device (FFR)474/3611 (13.1)237/4860 (4.9)10/958 (1.0)4/724 (0.6)515 (4.8)
Procedural success
LMS stenosis
 <50%3264/3451 (94.6)4440/4629 (95.9)909/958 (94.9)629/695 (90.5)953 (8.9)
 ≥50%187/3451 (5.4)189/4627 (4.1)49/958 (5.1)66/695 (9.5)
Flow in IRA
 TIMI 0 (%)26/1420 (1.8)48/2729 (1.8)56/899 (6.2)63/677 (9.3)4963 (46.4)
 TIMI 1 (%)5/1420 (0.4)9/2729 (0.3)12/899 (1.3)40/677 (5.9)
 TIMI 2 (%)19/1420 (1.3)43/2729 (1.6)44/899 (4.9)107/677 (15.8)
 TIMI 3 (%)1370/1420 (96.5)2629/2729 (96.3)787/899 (87.5)467/677 (69.0)
  • *Missing of the total=10 697.

  • CAD, cardiovascular disease; CSA, chronic stable angina; EF, ejection fraction; FFR, fractional flow reserve; IRA, infarct-related artery; IVUS, intravascular ultrasound; LMS, left main stem; LVSD, left ventricular systolic function; MI, acute myocardial infarction; NSTEACS, non-ST-segment elevation acute coronary syndrome; PCI, percutaneous coronary intervention; STEMI, ST-segment elevation myocardial infarction; TIMI, thrombolysis in myocardial infarction; –, not eligible; UPLMS, unprotected left main stem.