Given a 2% rate of ectopic pregnancies, the 0% live birth rate and high maternal fatality rate, how is preventing abortion moral?

In 2% of pregnancies, the fertilized egg implants somewhere other than in the uterine lining, often in the Fallopian tubes ("tubal pregnancy"). Ectopic pregnancy - Symptoms and causes - Mayo Clinic . There is no chance of a live birth. Mayo Clinic: "An ectopic pregnancy can't proceed normally. The fertilized egg can't survive, and the growing tissue may cause life-threatening bleeding, if left untreated." The equivalent in a man would be placing an expandable bladder inside an organ in the abdomen, then slowly pumping fluid into it over days or weeks until something bursts. The only known treatment is removal of the (doomed) fetus, via abortion. 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?