Table 3

Baseline Angiographic and Procedural Characteristics

Vessels (n = 52)No LGE (n = 37)Any LGE (n = 15)p Value
Bifurcation18 (35)12 (32)6 (40)0.65
CTO5 (9)4 (11)1 (6)1
Treated vessel0.40
 LAD26 (50)19 (51)7 (47)
 LCX11 (21)6 (16)5 (33)
 RCA15 (29)12 (32)3 (20)
Ambrose B2-C type30 (57)21 (57)9 (60)0.91
Total stent length, mm22 (15–32)20 (14–32)23 (16–28)0.86
Number of stents0.48
 01 (2)0 (0)1 (7)
 134 (65)25 (68)9 (60)
 212 (23)9 (24)3 (20)
 34 (8)2 (5)2 (13)
 41 (2)1 (3)0 (0)
DES use34 (65)25 (68)9 (60)0.60
Pre-dilation43 (83)30 (81)13 (87)1
Post-dilation42 (81)27 (73)15 (100)0.046
Max pressure inflation, atm16.3 ± 3.516.1 ± 3.517.0 ± 3.40.37
Max balloon diameter, mm3.2 ± 0.483.2 ± 0.453.2 ± 0.560.77
QCA measurement
 MLD pre, mm0.63 (0.4–0.97)0.66 (0.4–1.2)0.62 (0.4–0.7)0.53
 Stenosis severity, %68.3 ± 17.567.5 ± 17.970.6 ± 16.30.54
 Stenosis length, mm9.6 (8.1–14.1)9.9 (8.2–14.1)9.4 (7–14.4)0.66
Final TIMI flow grade 349 (94)34 (92)15 (100)0.55
Final TMPG 339 (75)27 (73)12 (80)0.73
Flow impairment20 (38)15 (41)5 (33)0.76
Final cTFC, median (range)10 (7–13)8.5 (6–11)0.42

Cardiovascular magnetic resonance (CMR) vessel analysis. All values given as n (%) unless otherwise indicated.

cTFC = corrected Thrombolysis In Myocardial Infarction frame count; CTO = chronic total occlusions; DES = drug-eluting stent; LAD = left anterior descending artery; LGE = late gadolinium enhancement; MLD = minimal lumen diameter; QCA = quantitative coronary analysis; RCA = right coronary artery; TIMI = Thrombolysis In Myocardial Infarction; TMPG = Thrombolysis In Myocardial Infarction myocardial perfusion grade.

  • A large anatomic first diagonal was the vessel treated corresponding to the CMR left circumflex artery (LCX) territory. Continuous values are presented as mean ± SD, or median (interquartile range) as appropriate.