Cardiovascular Ultrasound

Table 2 Luminal vessel wall and plaque measurements and compositional data in each region of the bifurcation at baseline and at 2 years follow-up (n = 30 bifurcations)

From: Assessment of plaque evolution in coronary bifurcations located beyond everolimus eluting scaffolds: serial intravascular ultrasound virtual histology study

Variable	Baseline	2 years follow-up	p value
Vessel CSA (mm ² )
Distal	12.94 ± 4.35	13.22 ± 4.36	0.27
In-bifurcation	14.96 ± 5.65	15.11 ± 5.78	0.33
Proximal	15.22 ± 5.99	15.23 ± 5.89	0.80
Lumen CSA (mm ² )
Distal	7.89 ± 3.16	8.16 ± 2.80	0.20
In-bifurcation	10.02 ± 4.35	10.25 ± 4.40	0.28
Proximal	9.05 ± 4.06	9.34 ± 4.25	0.25
Plaque CSA (mm ² )
Distal	5.05 ± 3.19	5.05 ± 3.36	0.58
In-bifurcation	4.93 ± 2.93	4.90 ± 3.17	0.98
Proximal	6.18 ± 3.48	5.87 ± 3.33	0.12
Plaque burden (%)
Distal	37.54 ± 14.21	36.36 ± 14.20	0.23
In-bifurcation	32.63 ± 12.60	31.74 ± 12.71	0.41
Proximal	39.43 ± 13.70	38.11 ± 14.35	0.25
DC CSA (mm ² )
Distal	0.37 ± 0.80	0.33 ± 0.63	0.84
In-bifurcation	0.28 ± 0.55	0.32 ± 0.59	0.25
Proximal	0.30 ± 0.50	0.30 ± 0.51	0.46
DC (%)
Distal	11.86 ± 21.49	9.40 ± 13.28	0.93
In-bifurcation	15.61 ± 22.30	14.04 ± 18.14	0.86
Proximal	10.66 ± 18.39	9.84 ± 15.56	0.87
NC CSA (mm ² )
Distal	0.42 ± 0.72	0.49 ± 0.90	0.44
In-bifurcation	0.38 ± 0.58	0.43 ± 0.82	0.48
Proximal	0.51 ± 0.71	0.55 ± 0.79	0.84
NC (%)
Distal	11.00 ± 13.18	12.94 ± 16.25	0.51
In-bifurcation	13.63 ± 11.04	15.66 ± 12.83	0.36
Proximal	13.69 ± 11.17	15.08 ± 13.05	0.31
Fibrofatty CSA (mm ² )
Distal	0.19 ± 0.37	0.26 ± 0.76	0.97
In-bifurcation	0.32 ± 0.69	0.28 ± 0.75	0.23
Proximal	0.32 ± 0.52	0.32 ± 0.74	0.53
Fibrofatty tissue (%)
Distal	5.41 ± 8.65	6.32 ± 15.03	0.85
In-bifurcation	8.42 ± 12.82	6.48 ± 11.42	0.39
Proximal	8.68 ± 10.25	9.09 ± 13.95	0.60
Fibrotic CSA (mm ² )
Distal	0.94 ± 1.41	0.78 ± 1.25	0.26
In-bifurcation	1.05 ± 1.27	0.93 ± 1.32	0.26
Proximal	1.62 ± 1.70	1.21 ± 1.43	0.01
Fibrotic tissue (%)
Distal	28.39 ± 30.79	21.38 ± 24.45	0.13
In-bifurcation	35.44 ± 27.72	37.20 ± 26.75	0.82
Proximal	46.28 ± 28.32	38.33 ± 28.77	0.10

Table footnote: CSA cross sectional area, DC dense calcium, NC necrotic core.

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