Diagnostic Performance of Frequency-Domain Optical Coherence Tomography to Predict Functionally Significant Left Main Coronary Artery Stenosis

Table 3

Comparison between optical coherence tomography measurements of LM stenosis with FFR ≤0.80 and FFR >0.80.

	FFR ≤0.80 (n = 39)	FFR >0.80 (n = 49)	value
LM length, mm	13.75 ± 4.9	11.47 ± 5.0	0.035
Lesion length, mm	4.29 ± 2.5	3.24 ± 1.5	0.020
Reference lumen diameter, mm	3.94 ± 0.5	4.10 ± 0.7	0.128
Minimum lumen diameter, mm	2.11 ± 0.4	2.74 ± 0.7	<0.001
Percent diameter stenosis (%)	45.32 ± 14.1	33.35 ± 12.4	<0.001
Reference lumen area, mm^2	11.86 ± 3.0	14.16 ± 4.6	0.008
Minimum lumen area, mm^2	3.96 ± 1.3	7.31 ± 3.0	<0.001
Percent area stenosis (%)	64.42 ± 17.6	47.58 ± 16.3	<0.001

Values are presented as n (%) or mean ± standard deviation (SD). FFR = fractional flow reserve; LM = left main coronary artery; n = number of patients.