While a woman's prime age for childbirth is indeed based in medical fact... ...counting backwards from there...

It can also stand for the surgical method percutaneous transluminal angioplasty. That's medical jargon.

The precision suggests<br>it was done by a person with considerable medical knowledge.

If I needed medical advice, I'd have called for a healer. And you look like nonesuch, not even a quack.