Table 2

In-Hospital Parameters for the Study Groups

Chronic Total Occlusionp Value
Yes (n = 278; 41.2%)No (n = 397; 58.8%)
NYHA functional class III/IV, %44.244.30.98
CCS 1, %53.955.90.61
CCS 2, %18.316.50.50
CCS 3, %27.827.60.98
Mean LVEF, %26.8 ± 5.527.1 ± 5.90.60
Left ventricular end-diastolic diameter (mm)63.8 ± 8.763.9 ± 8.80.92
Left ventricular end-systolic diameter (mm)51.04 ± 10.051.1 ± 10.30.99
Left ventricular end-diastolic volume (ml)197.7 ± 82.7195.04 ± 77.10.73
Left ventricular end-systolic volume (ml)148.6 ± 73.3147.3 ± 70.80.85
Number of segments with normokinesia per patient7 (2–10)8 (4–10)0.18
Number of segments with hypokinesia per patient5 (2–8)4.5 (1–8)0.89
Number of segments with normo/hypokinesia per patient11 (10–14)12 (10–14)0.03
Number of segments with akinesia per patient5 (3–7)4 (3–7)0.03
WMSI1.9 ± 0.31.9 ± 0.30.02
Segments with normo/hypo/akinesia in territories supplied by LAD/D CTO, %32.6/38.6/28.8
Segments with normo/hypo/akinesia in territories supplied by CX/OM CTO, %31.4/44.3/24.3
Segments with normo/hypo/akinesia in territories supplied by RCA CTO, %20.7/46.7/32.6
Severe mitral insufficiency, %11.18.80.31
Multivessel coronary disease, %73.444.3<0.01
Location of the chronic total occlusion, %
 LAD/D44
 Cx/OM39
 RCA56
Number of CTO per patient1.4
PCI of non-CTO artery, %46.756.40.01
Hospital stay (days)8.8 ± 6.79.3 ± 8.10.33

Values are %, mean ± SD, or median (interquartile range).

CCS = Canadian Cardiovascular Society; CTO = chronic total occlusion; Cx = circumflex artery; D = diagonal branch; IQR = interquartile range; LAD = left anterior descending artery; LVEF = left ventricular ejection fraction; NYHA = New York Heart Association; OM = obtuse marginal branch; PCI = percutaneous coronary intervention; RCA = right coronary artery; WMSI = wall motion score index; other abbreviation as in Table 1.

  • During index hospitalization.