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

Table 5 ROC curves analysis of TR and TV 3D geometry parameters to differentiate moderate TR from severe

	AUC	95% CI	Cut-off	Specificity	Sensitivity
TA area, cm²	0.90	0.83–0.95	12.95	0.90	0.81
TA perimeter, cm	0.90	0.83–0.95	12.85	0.83	0.83
Minor axis, cm	0.86	0.78–0.93	3.25	0.67	0.96
Major axis, cm	0.85	0.77–0.92	4.55	0.88	0.66
4ch diameter, cm	0.85	0.78–0.92	4.15	0.83	0.68
Tenting volume, ml	0.82	0.74–0.90	2.95	0.88	0.64
2ch diameter, cm	0.81	0.72–0.89	3.56	0.67	0.83
Max tenting height, cm	0.74	0.64–0.84	0.65	0.58	0.84
Coaptation height, cm	0.66	0.55–0.77	0.65	0.69	0.62
Values indexed to BSA
TA area, cm²	0.87	0.79–0.94	6.14	0.79	0.87
TA perimeter, cm	0.80	0.70–0.88	6.55	0.67	0.80
Minor axis, cm	0.81	0.71–0.90	1.87	0.81	0.76
Major axis, cm	0.76	0.65–0.86	2.14	0.57	0.89
4ch diameter, cm	0.84	0.75–0.91	1.99	0.74	0.84
2ch diameter, cm	0.74	0.63–0.84	1.79	0.57	0.89

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