Table 3.

Postoperative changes in the severity grading of AS and AR.

Surgical indication	AS				AR
	Improved	Maintained	Worsened	Missing	Improved	Maintained	Worsened	Missing
Predominantly severe MS (n = 71)	3	49	16	3	14	39	15	3
Predominantly severe MR	0	3	1	0	0	3	1	0
Severe MS + severe MR (n = 1)	1	0	0	0	0	1	0	0

Note: Severity assessments using echocardiography, at least one year after mitral valve surgery, compared to preoperative evaluations are shown. Among the three patients with paradoxical low-flow, low-gradient severe aortic stenosis despite normal left ventricular ejection fraction, only one patient was classified as having true-severe aortic stenosis according to our assessment. The remaining two patients were classified as having moderate aortic stenosis. Parenthesis presents the number of patients.

Abbreviations: AR, aortic regurgitation; AS, aortic stenosis; MR, mitral regurgitation; MS, mitral stenosis.