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Table 4 Comparison of mitral regurgitation severity in HCM patients without LVOT obstruction: aortic vs. pulmonary flow-based MRvol grades

From: Quantification of mitral regurgitation in patients with hypertrophic cardiomyopathy using aortic and pulmonary flow data: impacts of left ventricular outflow tract obstruction and different left ventricular segmentation methods

  Aortic flow-based MRvol grades calculated as LVSVincl − Ao
< 15 ml 15–29 ml 30–45 ml 45–59 ml Total
Pulmonary flow-based MRvol grades calculated as LVSVincl − MPA
 < 15 ml 18 3 0 0 21 (23.1%)
 15–29 ml 1 36 3 0 40 (44.0%)
 30–45 ml 0 2 23 1 26 (28.6%)
 45–59 ml 0 0 0 4 4 (4.4%)
 Total 19 (20.9%) 41 (45.1%) 26 (28.6%) 5 (5.5%) 91
  1. There were no patients with MRvol ≥ 60 ml in the non-obstructive HCM group