DEAR DOCTOR K: I have a heart condition. What do I need to know before I get pregnant?
DEAR READER: When a woman is pregnant, her heart is working for two. Blood passes through her placenta to her baby. This places additional demands on her body's circulatory system, particularly the heart. Among other changes, her heart pumps a much higher volume of blood each minute. As a woman with a heart condition, it's particularly important for you to understand what this added workload might mean to your health, and to your baby's.