Uncanny X-Men #512
Matt Fraction, writer
Yanick Paquette, penciler
Beast and his team of scientists have traveled back in time to the San Francisco of 1906 looking for Nicola and Catherine Bradley. They find Catherine just in time to rescue her from an attack by goons from the Hellfire Club — immediately afterward, Catherine Bradley suffers some significant vaginal bleeding. The doctor who examines her diagnoses her with placenta previa and places her on bedrest.


Placenta previa occurs when the placenta, instead of its normal location along the side or top of the uterus, implants along the bottom of the uterus, covering up the opening to the birth canal. It is a fairly common cause of vaginal bleeding during later pregnancy, but is very, very rare in the first trimester (the first three months of pregnancy).
More common causes of first trimester bleeding include implantation bleeding, miscarriage or threatened miscarriage, or an ectopic pregnancy. Trauma can play a role as well, as can non-uterine causes of vaginal bleeding.
There is nothing a physician or mother can do to cure placenta previa. Minimizing the recurrence of bleeding from the previa is wise, so that is why bed rest is recommended. Luckily, most placenta previa resolve by themselves — as the uterus grows during pregnancy, it pulls the placenta up higher. For a placenta previa discovered during the second trimester, there is a 90% chance it will resolve by the delivery date.
Currently, a cesarean (c-section) is the preferred method in the United States for delivering the baby when there is placenta previa. If c-section is not an option — for instance, in certain more remote parts of the world, or at the turn of the 20th century — the baby can be delivered vaginally, but it is a bloody mess. While there is a risk the mother may die due to placenta previa, it is the baby who faces the greatest risk of death. Currently in the United States, the maternal mortality rate from placenta previa is 0.03% (I don’t have the data, but I suspect the risk was several orders of magnitude larger in 1906).
Dating the Pregnancy: Mrs Bradley tells her husband the news that she is pregnant on or about April 18th. She is suffering morning sickness at the time. She delivers the child on December 1st. Most first-time mothers deliver a few days later than their expected due date — but on the other hand, half of pregnancies complicated by placenta previa deliver early — so I’m going to assume these two cancel each other out, and Catherine delivers when expected. This places Catherine in her seventh week of pregnancy during the main part of the story (and means that she is experiencing morning sickness a little earlier than expected — classically it begins around the 12th week, but it’s certainly not uncommon to see it start earlier).
Ethical Questions and SPOILERS (highlight to read)
Taking as given the standard ethical warning about a physician treating a member of their own family, this scenario opens up a couple of intriguing questions, questions that were for some reason not covered in my Medical Ethics class in medical school.
1. Since James Bradley already knows that Catherine dies in childbirth, is he — consciously or sunconsciously — not going to try as hard to save her life as he should?
2. If the situation comes down to the life of the mother versus the life of the child (not uncommon when dealing with placenta previa), and since he himself is the child, wouldn’t his medical decision making be severely compromised?
(I guess part of the ethics depends on your opinion on time paradoxes and whether or not the past is immutable)