Upvote:-1
The question is a bit broad when it asserts, "How is preventing treatment, resulting in severe injury or death of the woman and no chance of a live birth, considered moral according to Christianity?"
I have given a more nuanced approach to abortion in this answer.
But as an analogy to how a Christian can justify abortion for the sake of a mother's life threatening psychological health, imagine the fetus being like a human bullet. The mother, in self defense, can choose to kill her own offspring so as to defend her own life. In other words, it would be the lesser of two evils to kill her own offspring in self defense.
The principle of bodily autonomy in this case functions in a similar manner to that of national state rights. From a human rights point of view, each country can set their own standards for capital punishment. It is only when capital punishment is done indiscriminately that state rights intervention can take place.
Upvote:14
Outlawing abortion would not and does not in any country outlaw an operation to save the life of the mother in the case of ectopic pregnancies or any other non-viable pregnancies.
A therapeutic abortion is a procedure whose sole objective is to kill the unborn child.
In the case of an ectopic pregnancy the mother is very likely to die unless the pregnancy is ended. In such a case the unborn child will also die. So ending the pregnancy will not be killing a life but rather saving the life of the mother... the baby was going to die no matter what you did.
Neither the Roman Catholic Church nor any other denomination advocates that such life-saving procedures should be illegal or considered in the same light as "therapeutic abortion".