In valvular heart disease complicating pregnancy the following statements are true except:: (A) A closed mitral valvotomy can be carried out if symptoms of mitral stenosis are severe, (B) Open heart surgery is associated with a reduction in fetal loss, (C) Mitral regurgitation is usually well tolerated, (D) A maternal mortality of 15% has been reported in women with critical aortic stenosis
Answer is B. None