Percutaneous balloon mitral valvuloplasty in a pregnant woman with mitral stenosis

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Abstract
A 39‐year‐old woman with symptomatic mitral stenosis underwent percutaneous mitral valvuloplasty at the end of her first trimester of pregnancy. Balloon dilatation utilizing a double 18–20 mm balloon technique resulted in improvement in mean mitral gradient (16 to 7 mmHg) and in calculated mitral valve area (1.4 to 2.4 cm2), without significant complications and with an estimated radiation exposure to the fetus of less than 0.2 rads. The procedure resulted in disappearance of symptoms of congestive heart failure and allowed for discontinuation of diuretics. The subsequent course of gestation was uncomplicated and a normal baby boy was delivered in the 36th wk. We conclude that percutaneous mitral valvuloplasty may produce successful palliation of symptoms in patients with mitral stenosis during pregnancy.

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