Babies born before twenty two weeks are scarcely even viable human beings outside the womb. They are perhaps the most deserving candidates for medical intervention and supervision. They are literally hanging on the edge of life. There is no reason there should not be around the clock medical supervision on these children.
No. It would be morally unethical for medical staff to simply leave a baby born at 22 weeks to fight for their own survival. Doctors take an oath that they will fight to preserve the health of all human beings. Stating that a 22 week old baby should be left to die is stating that they aren't a human being; and that is simply wrong.