There is absolutely no single possible exception to the moral law. Abortion is never allowed under any circumstances, regardless of who’s at risk.
If there is a risk to the mother, the physician has a moral obligation to try to save both lives. He may never choose one over the other. To do so is murder. If one or both lives are lost in the attempt, we commend both souls to the mercy of God.
In the event that the child is viable outside the womb, labor can be provoked or a C-sec may be performed. However, the physician must be certain that the child has reached viability. Let’s say that the child is 35 weeks, gestational age, there is a good chance that this child will live outside the womb. But this is very risky, because one is speculating. It is best to wait to get as close to term as possible.
There are situations in which the phyisician must perform a medical procedure to save the life of the mother, when such a procedure cannot be postponed. In that case, even if the death of the child is foreseeable, but there is no intent to terminate the child’s life, this is not an abortion. For example, removing a cancerous uterous that has a child inside, because it cannot wait, is not intended to kill the child, but to remove the failing organ. The death of the child is foreseeable and unavoidable, but not intended.
In an ectopic pregnancy, the removal of the tube, when the situation becomes critical, is not an abortion. However, removing the child from the tube is an abortion. The intent of the latter is very clear, to save the tube at the expense of the child. A choice is being made and the child is the sacificial lamb.
Whereas, killing the child to lower the mother’s BP is murder. The intent there is to kill one person to save another. This is not the same as removing an organ.
This is not a Catholic position. This is natural law reavealed to all men of reason. The Church recognizes the voice and will of the Creator as he speaks through natural law.
Fraternally,
Br. JR, OSF