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Hemolytic disease of the newborn (HDN) is a disease in which there is hemolysis in a newborn or fetus caused by blood-group incompatibility between mother and child. There are a bunch of related terms: Immune hydrops (Hydrops means accumulation of edema fluid in the fetus during intrauterine growth.
During pregnancy changes occur in your immune system, heart, and lungs. Additional stress is put on the heart and lungs as the lung capacity decreases and heart rate increases during pregnancy. During this time the immune system is also naturally suppressed making you more susceptible to the flu during pregnancy.Getting the flu while pregnant can lead to pneumonia and even hospitalization, so it is important to do what you can to prevent getting the flu during pregnancy. It also places your baby at risk.uring this time the immune system is also naturally suppressed making you more susceptible to the flu during pregnancy. Getting the flu while pregnant can lead to pneumonia and even hospitalization, so it is important to do what you can to prevent getting the flu during pregnancy. It also places your baby at risk.