Also, greater industrial and indoor air pollution and increased allergen exposure to things like dust mites. Yes, in several ways. Bad asthma episodes that cause the mother to be exhausted and causing oxygen levels to drop can be dangerous to the baby. Airway sensitivity or ease of stimulating an asthma attack, varies a lot from woman to woman during pregnancy. Some women have more problems with their asthma, in some it does not seem to matter, and in a lucky few it gets better.
Most asthma medications are safe for mother and baby during pregnancy.
However, high doses of oral cortisone or some antibiotics are a risk to the fetus. The inhaled corticosteroids are theoretically a problem to the developing baby, but are much safer than high doses of oral steroids or risking severe asthma symptoms. Late in pregnancy, the baby and uterus take up most of the space in the mother s abdomen, and a lot of breathing space. Use your medications to prevent and aggressively treat your asthma episodes. During delivery, most women have surprisingly little trouble with acute asthma.