Table 3: Angiographic and procedural characteristics (QCA) (n= 30 lesions).

HSRA
(n= 15)
LSRA +HSRA
(n= 15)
P value

Location0.31
 Left anterior descending12 (80)13 (87)
 Left circumflex2 (13)0 (0)
 Right coronary artery1 (7)2 (13)

Guide catheter0.07
 6F11 (73)6 (40)
 7F4 (27)9 (60)

Before procedure
 Pre-RVD (mm)2.19 ±0.512.07 ±0.460.47
 Lesion length (mm)16.68 ±10.4714.20 ±8.210.48
 Pre-MLD (mm)0.85 ±0.160.83 ±0.220.81

Pecking motion times
 190,000 rpm33.2 ±12.336.9 ±31.50.58
 110,000 rpm-11.9 ±4.3-
 total33.2 ±12.348.8 ±29.60.05

Immediately after RA
 Post-MLD (mm)1.24 ±0.291.34 ±0.330.38

Values are n (%) or mean ± SD.
HSRA= high-speed rotational atherectomy, LSRA +HSRA= low-speed rotational atherectomy following HSRA, MLD= minimal lumen diameter, QCA= quantitative coronary angiography, RA= rotational atherectomy, and RVD= reference vessel diameter.
Pecking motion times data were not available in 1 case in LSRA +HSRA group. They were excluded in the analysis of pecking motion times comparison between the groups.