A Novel Rotablator Technique (Low-Speed following High-Speed Rotational Atherectomy) Can Achieve Larger Lumen Gain: Evaluation Using Optimal Frequency Domain Imaging

Table 2

Baseline characteristics (n= 30 lesions).

	HSRA; (n= 15)	LSRA+ HSRA; (n= 15)	P value
Age (yrs)	73.0 ±9.6	73.0 ±8.9	0.76
Female	4	8	0.14
Transradial approach	11	9	0.44
Body mass index(kg/m2)	23.6±2.3	23.4±4.7	0.72
Hypertension (%)	14 (93)	13 (87)	0.54
Dyslipidemia, n (%)	10 (67)	10 (67)	1.00
Diabetes mellitus, n (%)	7 (47)	5 (33)	0.12
Prior MI, n (%)	3 (20)	4 (27)	0.46
CCS III/IV, n (%)	5 (33)	6 (40)	0.67
LV ejection fraction (%)	62.0±5.4	63.0±11.5	0.29
Multivessel disease, n (%)	12 (80)	9 (60)	0.23

Values are n (%) or mean ±SD.
HSRA= high-speed rotational atherectomy, LSRA +HSRA= low-speed rotational atherectomy following HSRA, LV= left ventricle, CCSIII/IV= Canadian Cardiovascular Society grading III/IV of angina pectoris, MI= myocardial infarction.