But studies in countries where there has been a switch from babies sleeping predominantly on their stomachs to sleeping mainly on their backs have not found any evidence of increased risk of choking or other problems. Choking is an extremely rare cause of infant death in healthy, full-term infants. During the last 4 years, the rate of choking in infants has not increased. While spitting up is common, these complications are rare. Infants with birth defects of the upper airway that interfere with breathing.
Examples are a large tongue, a very small mouth, or a large and floppy larynx.
Premature babies who are having difficulty breathing or require oxygen. By the time they come home, most premature babies should sleep on their backs. Any baby who needs to sleep prone must be placed on a firm sleeping surface. The back position is recommended for bedtime and naps. It is not necessary if your infant is awake.