When a baby is born prematurely, the part of the brain that controls breathing and heart rate may not be fully developed. This may lead to "spells" where breathing stops for 20 seconds or more, then starts again. In some cases, breathing stops for less than 20 seconds and is linked with a drop in heart rate. This is called bradycardia or "brady." The baby may also have changes in skin color (pale or blue) and a drop oxygen level (desaturation or "desat"). This is called apnea of prematurity (AOP). AOP is common among premature babies. The earlier the preemie and the lower the birth weight, the more likely it is that AOP will happen.
During an apnea spell, the baby may become limp, pale, and bluish. The baby's heart rate and oxygen levels may go down. Most of the time, the baby begins breathing on their own again within 20 seconds. But sometimes they need help to start breathing again. Apnea spells may happen once a day. Or they may happen many times a day until the brain becomes more mature. Premature babies born under 35 weeks' gestation need to stay in an intensive care unit because of the risk for apnea.
AOP goes away as a baby matures. It usually goes away within a month or so of the baby's estimated due date. If the baby is in the neonatal intensive care unit (NICU), they are often treated with caffeine. Babies under 28 weeks' gestational age will usually be started on caffeine right away after birth.
The apnea probably will not happen again once your baby stops having apnea spells for at least 5 to 7 days. Or once they stop having the spells for up to 14 days if they have been on a higher caffeine dose.
Preterm babies who have had AOP are not at greater risk for SIDS (sudden infant death syndrome) than other preterm babies.