How does asthma affect pregnancy?

Variably: It is important for both mother and baby that the asthma remains under good control, and this can be achieved with medications. Pulmicort and singulair (montelukast) have category b ratings for pregnancy.It is reported that approximatley 1/3 of pregnant asthmatics improve, 1/3 worsen and 1/3 remain the same. Deterioration of asthma during pregnancy can deprive the baby of oxygen and lead to premature birth.

Can deprive oxygen: It is very important to maintain good control of asthma during pregnancy. This means that even category c medications, if required to maintain good control, should be continued during pregnancy. The risks of depriving oxygen to the fetus versus with uncontrolled asthma outweighs the risks of a possible negative effect to the fetus from the medications. Always consult with your doctor first.