Long-Term Outcomes after Rotational Atherectomy for Calcified Chronic Total Occlusion versus Nonchronic Total Occlusion Coronary Lesions
Table 2
Angiographic and procedural characteristics.
Total (n = 869)
CTO RA (n = 80)
Non-CTO RA (n = 789)
value
Indication for PCI (%)
Stable CAD
652 (75%)
59 (73.8%)
593 (75.2%)
0.432
UA
109 (12.5%)
14 (17.5%)
95 (12%)
NSTEMI
82 (9.4%)
5 (6.3%)
77 (9.8%)
STEMI
26 (3%)
2 (2.5%)
24 (3%)
Target vessel (%)
LAD
384 (44.2%)
23 (28.7%)
361 (45.8%)
<0.001
LCX
124 (14.3%)
7 (8.8%)
117 (14.8%)
LM
95 (10.9%)
0
95 (12%)
RCA
266 (30.6%)
50 (62.5%)
216 (27.4%)
Ostial lesion (%)
223 (25.7%)
11 (13.8%)
212 (26.9%)
0.012
Bifurcation lesion (%)
347 (39.9%)
20 (25%)
327 (41.4%)
0.004
Indication for RA (%)
Elective
516 (59.4%)
31 (38.7%)
485 (61.5%)
<0.001
Bail-out
353 (40.6%)
49 (61.3%)
304 (38.5%)
Burr size (mm)
1.51 ± 0.21
1.38 ± 0.19
1.53 ± 0.21
<0.001
Number of burrs (%)
One burr
721 (84.5%)
69 (86.3%)
652 (84.2%)
0.473
Two burrs
132 (15.5%)
10 (12.5%)
122 (15.8%)
Number of stents
1.96 ± 1.03
2.64 ± 1.37
1.83 ± 0.97
<0.001
Stent type (%)
<0.001
Early generation
288 (33.1%)
13 (16.3%)
275 (34.9%)
New generation
433 (49.8%)
59 (73.7%)
374 (47.4%)
Total stent length (mm)
34 [22–53]
64 [41–94]
32 [20–50]
<0.001
Maximum stent size (mm)
3.05 ± 0.53
2.92 ± 0.94
3.06 ± 0.46
0.210
Postdilatation (%)
558 (64.2%)
46 (57.5%)
512 (64.9%)
0.194
Procedure time (min)
83 [60–119]
124 [97–170]
79 [58–113]
<0.001
Radiation time(min)
25 [16–39]
54.5 [38–86]
23.5 [15–35]
<0.001
Contrast dose (ml)
200 [150–300]
304 [244–378]
200 [150–300]
<0.001
Hemodynamic support (%)
0.931
Impella
14 (1.6%)
1 (1.3%)
13 (1.6%)
IABP
18 (2.1%)
2 (2.5%)
16 (2%)
Data presented as mean ± standard deviation or number and percentage. CAD, coronary artery disease; CTO, chronic total occlusion; IABP, intra-aortic balloon counterpulsation; LAD, left anterior descending; LCX, left circumflex; LM, left main coronary arteries; NSTEMI, non-ST-segment elevation myocardial infarction; RA, rotational atherectomy; RCA, right coronary artery; STEM, ST-segment elevation myocardial infarction; UA, unstable angina.
