When infants are born very early - 22, 23, 24, or 25 weeks into a pregnancy rather than at the full term of 40 weeks - they face a future of extreme uncertainty. Many die within 12 hours. In order to survive, all require active, aggressive treatments for problems with their lungs, hearts, and other organ systems.
Of those born at 22 weeks, 95% die without leaving the hospital. At 23 weeks, 74% never leave. By 25 weeks, the percentages have flipped: 75% leave the hospital alive.