Fig 1.
The classification of IVUS-calcified nodules.
Upper panels show the schemes of calcified nodules, and lower panels show the corresponding IVUS images. Type 1 was an eccentric calcified nodule without calcification at the opposite site of calcified nodule. Type 2 was an eccentric calcified nodule with broad (≥180° arc) superficial calcification at the opposite site of calcified nodule. Type 3 was an eccentric calcified nodule with narrow (<180° arc) superficial calcification pattern at the opposite site of calcified nodule. Type 4 was multiple calcified nodules within the lumen. Type 5 was a calcified nodule with visible luminal thrombus. Black represents calcification, yellow represents non-calcified plaques, orange represents visible thrombus, white represents vessel lumen, and red represents vessel wall (media).
Fig 2.
IVUS = Intravascular ultrasound, RA = rotational atherectomy.
Table 1.
Comparison of baseline characteristics between the 2 groups before and after propensity-score matching.
Table 2.
Pre-procedural angiographic and IVUS findings between the 2 groups before and after propensity-score matching.
Table 3.
Procedural and post-procedural angiographic and IVUS findings between the 2 groups before and after propensity-score matching.
Fig 3.
Kaplan-Meier curves of cumulative survival free of ischemia-driven TVR events within one year between two groups before and after propensity score matching.
Survival curves of ischemia-driven TVR are shown for the non-RA and the RA groups, and for the matched non-RA group and the matched RA group. A log-rank test showed no significant difference between the two groups in before (p = 0.82) and after propensity-score matching (p = 0.87).
Table 4.
Multivariate Cox hazard models to find associations with ischemia-driven TVR before and after propensity score matching.