Comparison of transthoracic echocardiography with computed tomography in evaluation of pulmonary veins

Table 4 Measurements of the ostial diameter of pulmonary veins by CT and TTE

Characteristic	Baseline			Follow-up			Baseline minus follow-up
Characteristic	N°	Diameter (mm)	P-value	N°	Diameter (mm)	P-value	N°	Diameter (mm)	P-value
Right superior PV
CT	140	17.96 ± 4.30		17	19.81 ± 4.58		17	0.78 ± 3.72	0.40
TTE	140	18.07 ± 3.79		17	19.21 ± 4.04		17	1.17 ± 3.44	0.18
CT minus TTE	140	−0.11 ± 1.76	0.45	17	0.60 ± 0.75	0.0046
Right inferior PV
CT	136	15.92 ± 3.19		15	16.76 ± 2.75		15	−0.07 ± 3.52	0.94
TTE	136	15.51 ± 2.90		15	15.37 ± 3.06		15	0.71 ± 4.00	0.50
CT minus TTE	136	0.41 ± 2.01	0.018	15	1.39 ± 1.59	0.0044
Left superior PV
CT	140	18.54 ± 3.44		17	19.75 ± 3.37		17	0.39 ± 3.16	0.62
TTE	140	18.42 ± 3.01		17	19.54 ± 3.12		17	0.39 ± 2.72	0.56
CT minus TTE	140	0.12 ± 1.40	0.33	17	0.21 ± 1.10	0.45
Left inferior PV
CT	134	15.56 ± 3.25		14	15.14 ± 3.73		14	2.28 ± 4.18	0.062
TTE	134	15.45 ± 3.01		14	14.89 ± 3.32		14	1.67 ± 3.45	0.093
CT minus TTE	134	0.11 ± 1.30	0.31	14	0.25 ± 0.61	0.15

P values are for paired differences of PV ostial diameters by CT vs. TTE or between baseline and follow-up measurements. Baseline and follow-up diameters refer to the measurements before PV ablation and at 12 months after ablation, respectively. Anatomically aberrant PVs were not taken into account for these comparisons
PV pulmonary vein, CT computed tomography, TTE transthoracic echocardiography

ISSN: 1471-2261