ALTE cannot necessarily be prevented. Preventing illness and infections when possible may decrease the likelihood of an episode of ALTE. However, most normal babies do not experience ALTE.
The long-term effects of ALTE vary depending on the cause. If there was an episode of ALTE and no other symptoms, there will often be no long-term effects. If the ALTE was caused by an infection that can be easily treated, there may be no other long-term effects. If the ALTE has another underlying cause, long-term effects may vary. They could range from treatable causes to life-threatening problems or even death.
The caregiver may also have some long-term effects. Witnessing an ALTE in an infant can be a very frightening experience. The caregiver often worries that the child may stop breathing again. Learning CPR can often help ease the caregiver's fears.
ALTE is not contagious, although the underlying cause may be contagious. For example, if the ALTE was triggered by an infection, the infection may be contagious.