Active Retrograde Extra Backup with a Mother-and-Child Catheter to Facilitate Retrograde Microcatheter Collateral Channel Tracking in Recanalization of Coronary Chronic Total Occlusion
Table 3
Procedural characteristics of the study population.
Variables
ARB group (n = 129)
Non-ARB group (n = 142)
value
Septal CC, n (%)
92 (71.3%)
95 (66.9%)
0.511
Epicardial CC, n (%)
37 (28.7%)
47 (33.1%)
0.511
Primary retrograde approach, n (%)
99 (76.7%)
101 (71.1%)
0.334
After failed antegrade approach, n (%)
30 (23.3%)
41 (28.9%)
0.334
Time of wire CC tracking (min)
25.4 ± 8.5
26.4 ± 9.7
0.348
Time of retrograde microcatheter tracking (min)
10.2 ± 3.8
15.5 ± 6.8
0.012
Time of retrograde approach (min)
62.8 ± 20.3
70.4 ± 24.3
0.026
Radiation dose (Gy. cm2)
223.6 ± 112.7
295.2 ± 129.3
0.028
Fluoroscopy time (min)
50.6 ± 21.3
62.3 ± 32.1
0.030
Antegrade Guidezilla usage, n (%)
40 (31.0%)
47 (33.1%)
0.795
Retrograde wire crossing, n (%)
14 (10.9%)
13 (9.2%)
0.688
Reverse CART, n (%)
115 (89.1%)
129 (90.8%)
0.688
Contrast volume (ml)
301.8 ± 146.7
352.2 ± 179.5
0.032
CC, collateral channel; CART, controlled antegrade and retrograde tracking. Bold values are statistically significant .
