Table 80. Classification of risks of valve diseases to pregnancy.

High risk	Intermediate risk	AccepTable risk
Severe MS	Biological prosthesis with moderate dysfunction	Mild valve disease
Severe AS Stenotic/calcified biological prosthesis Mechanical prosthesis with dysfunction	Pulmonary valve stenosis	Biological prosthesis without dysfunction
	Mitral mechanical prosthesis > Aortic mechanical prosthesis	No prognostic factors

AS: aortic stenosis; MS: mitral stenosis.