Dynamic changes of mitral valve annulus geometry at preprocedural CT: relationship with functional classes of regurgitation

European Radiology Experimental

Table 2 Left cardiac chamber volumes and mitral annulus metrics in MR and control subjects

	MR group (total = 51)	Control group (total = 21)	p value
Volumes and function at Echo
Left atrium ESV, mL	131 ± 55	62 ± 12	< 0.001
Left ventricle EDV, mL	161 ± 81	83 ± 23	< 0.001
Ejection fraction, %	44.4 ± 15.7	63.6 ± 5.8	< 0.001
Volumes and function at CCTA
Left atrium ESV, mL	202.7 ± 71.3	107.7 ± 24.3	< 0.001
Left ventricle EDV, mL	240.5 ± 110.3	135.6 ± 29.1	< 0.001
Ejection fraction, %	40.7 ± 15.0	68.7 ± 7.4	< 0.001
Mitral valve geometry at CCTA
D-shaped area max, cm²	15.6 ± 3.9	9.5 ± 1.8	< 0.001
D-shaped area min, cm²	13.0 ± 3.5	7.6 ± 1.6	< 0.001
TT distance max, mm	26.5 ± 4.1	25.3 ± 3.1	0.207
IC diameter max, mm	48.6 ± 6.4	39.6 ± 3.1	< 0.001
SL diameter max, mm	40.0 ± 5.5	29.7 ± 3.4	< 0.001
SL/IC ratio	0.82 ± 0.09	0.73 ± 0.05	< 0.001
Valve calcium volume, cm³	729.7 ± 1,994.1	0	< 0.001

Continuous variables are reported as mean ± standard deviation
CCTA cardiac CT angiography, EDV end diastolic volume, MR mitral valve regurgitation, TT trigone-to-trigone distance, IC intercommissural diameter, SL septal-to-lateral diameter