Mixed mitral valve disease: Of the 17 (22%) patients with
mixed mitral valve disease, 13 were known to have valvular
disease and four were newly diagnosed during the pregnancy.
Two patients had undergone balloon mitral valvuloplasty prior
to pregnancy for tight mitral stenosis. Four patients were in
NYHA class III−IV. Three of the four newly diagnosed patients
developed complications: congestive cardiac failure (one),
severe hypertension (one) and puerperal sepsis (one). All in this
group responded to medical treatment and surgical intervention
was not required.