How does severe, uncontrolled asthma adversely affect the fetus?
The developing fetus depends on the mother to supply oxygen for growth and survival. Oxygen dissolved in her blood is transferred through the placenta to the fetus. Uncontrolled asthma causes a decrease in the mother’s oxygen which, in turn, reduces the oxygen available to the developing fetus. This may result in impaired fetal growth; it could even affect survival of the fetus.
