The bullets don't say that now, but it's possible they changed the article (they should indicate the changes made, but I don't see any notes, so who knows). Currently the bullets say:

• Barbara Friedes, a 30-year-old pediatric doctor, was killed on Wednesday when she was hit by a car while riding a bike near Rittenhouse Square.

• Friedes was recently named a chief resident at the Children's Hospital of Philadelphia.

• At the time of the deadly crash, police say, Friedes was wearing a helmet and was riding in a protected bike lane. The driver of the vehicle that struck Friedes has not yet been charged.

There's a comment in the article that says they don't know if there was a medical issue:

Police said they do not know at this time if the driver had a medical condition or was intoxicated at the time of the crash.

My frustration here is that "medical issue" is ALWAYS the conclusion people jump to when a driver hits a cyclist, as if there's no possible way a driver could do anything wrong - despite all evidence to the contrary. "Medical issue" almost never turns out to be the actual reason. It's almost always drunk, distracted, just hates cyclists so much that they attack them, or some combination of the three. (There are also instances of cyclists being at fault, for example pulling out in front of a car. Those are rare, too, but they do happen.)

I recognize that a sudden, previously unknown medical condition could strike a driver, causing the driver to lose control and inflict damage and injuries. But it's an extremely rare event.