Three-dimensional analysis of the tricuspid annular geometry in healthy subjects and in patients with different grades of functional tricuspid regurgitation

Table 4 ROC curves analysis of TV 3D geometry parameters to differentiate no or mild TR from moderate

	AUC	95% CI	Cut-off	Specificity	Sensitivity
TA perimeter, cm	0.80	0.70–0.87	11.05	0.73	0.78
4ch diameter, cm	0.80	0.72–0.88	3.65	0.93	0.51
TA area, cm²	0.79	0.70–0.87	9.05	0.75	0.78
Major axis, cm	0.75	0.66–0.84	3.75	0.63	0.73
Minor axis, cm	0.71	0.61–0.80	3.05	0.67	0.68
Tenting volume, ml	0.69	0.58–0.79	1.35	0.75	0.63
2ch diameter, cm	0.68	0.58–0.78	3.25	0.68	0.61
Max tenting height, cm	0.67	0.57–0.77	0.75	0.97	0.41
Coaptation height, cm	0.66	0.55–0.77	0.65	0.69	0.62
Values indexed to BSA
TA perimeter, cm	0.77	0.68–0.86	5.50	0.58	0.90
4ch diameter, cm	0.83	0.75–0.91	1.64	0.66	0.95
TA area, cm²	0.82	0.73–0.90	4.77	0.69	0.86
Major axis, cm	0.78	0.68–0.86	1.88	0.61	0.88
Minor axis, cm	0.73	0.63–0.83	1.66	0.76	0.62
2ch diameter, cm	0.67	0.56–0.77	1.66	0.61	0.69

AUC area under the curve, BSA body surface area, ROC receiver operating characteristic, CI confidence interval, TA tricuspid annulus, TR tricuspid regurgitation, TV tricuspid valve, 3D three dimensional, VCA vena contracta area, EROA effective regurgitant orifice area, VC vena contracta, 4Ch four chambers, 2Ch two chambers

ISSN: 1476-7120