Table 2.

Optical coherence tomography findings.

	Refractory VSA (n = 9)	Stable VSA (n = 8)	p-value
Target vessel			0.87
LAD	6 (67)	6 (75)
LCx	1 (11)	1 (13)
RCA	2 (22)	1 (13)
Intimal bump	7 (78)	2 (25)	0.06
Minimal lumen area (mm2)	5.29 ± 1.38	5.75 ± 1.16	0.73
Reference lumen area (mm2)	6.43 ± 1.30	7.13 ± 10.85	0.86
Lumen are stenosis (%)	81.7 ± 8.2	80.5 ± 11.1	0.41
Maximum medial thickness (μm)	184 ± 17	148 ± 31	0.017

Values are presented as n (%) or mean ± standard deviation.

VSA vasospastic angina, LAD left anterior descending artery, LCx left circumflex artery, RCA right coronary artery.