A 28 year-old-woman at 36 weeks’ gestation presents to the obstetrician for an antenatal appointment. Her pregnancy has been uncomplicated. Physical examination shows mild bilateral edema at the ankles. There is a 2/6 systolic murmur at the upper left sternal border. The lungs are clear to auscultation. Which of the following is the most likely explanation for this patient’s findings?
A) Antibodies against myocardium
B) Bicuspid aortic valve
C) Myxomatous degeneration
D) Functional murmur
E) Stenosis of the mitral valve
