This article here from The Washington Post explains how new screening techniques for Down’s Syndrome in pregnancy has caused most Down’s Syndrome fetuses to be aborted. Future challenges posed by a special needs child is the justification for this.
This is particularly relevant for micropreemies because doctors will encourage mothers to abort if pre-term birth looks imminent in weeks 20 or 21, and will often deny care to preemies born at 22 weeks. One of the primary justifications for this is that if the baby does survive, he or she is likely to be impaired.
I think Down’s Syndrome fetuses and micropreemies should be treated as patients with disabilities with full human rights — and allowed to have whatever lives they can.