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Table 2 Results of ANOVA analysis for MA diameter and CSAMA

From: The impact of different geometric assumption of mitral annulus on the assessment of mitral regurgitation volume by Doppler method

VariableValueANOVA analysis
FP
MA diameter (cm)
 MAPLAX3.0 ± 0.418.471<0.001
 MAA4C2.9 ± 0.4
 MAA2C2.7 ± 0.3
Circular assumption (cm2)
 CSAPLAX7.1 ± 1.99.992<0.001
 CSAA4C6.6 ± 1.7
 CSAA2C5.7 ± 1.2
Ellipse assumption (cm2)
 CSAPLAX + A4C6.8 ± 1.6
 CSAPLAX + A2C6.3 ± 1.4
 CSAA4C + A2C6.1 ± 1.3
  1. MAPLAX, MAA4Cand MAA2Cdiameter The MA diameter was measured in PLAX, A4C and A2C view, CSAPLAX The CSA of MA was calculated from the MA diameter in PLAX view using circular geometric assumption (CSA = 0.785 d2), CSAPLAX + A4C The CSA of MA was calculated from the MA diameter in PLAX and A4C view using ellipse assumption (CSA = 0.785 × a × b)