This is one of those "broad" excuses that doctors have used since ad finitum to justify abortion. High blood pressure is an example of a 'life threatening' situation. It's treatable.
Actually, a couple of things here. First, one of the occurrences might be if the woman had a certain type of cancer and found out she was pregnant. The pregnancy may cause the cancer to spread more rapidly. Another scenario, that gets misrepresented is the catch all of 'the life of the mother'. I was caught up in that with HELLP Syndrome but, it like other high risk pregnancies doesn't really center on aborting the baby, as much as it centers on who to save in the event that they can only save one. The mother or the baby. In such a case, saving the mother doesn't mean the baby is aborted, it just means the baby dies during childbirth. Sometimes the surgeons cannot save both the mother and the baby. To me, abortion is intentional and planned. To me anyway, if the health of the mother is at risk and they have to deliver the baby early and it doesn't survive, that is not abortion.
That is a very good response.