Quote from: Jenna Marie on June 10, 2015, 09:11:12 AM
Laura, it may depend on the surgeon, but Brassard was quite firm that even patches had to be removed. I'm not surprised; cis girls on birth control sometimes have to stop for major surgery too, and they're on relatively much lower doses than most of us. Something about E provided from outside the body, even in very low amounts and/or via the liver-safe routes like patch/injection/implant, increases clotting risks.
Birth control is not the same as patches. Birth control, firstly, is composed of an estrogen that is not bio-identical and that increases clotting to a great extent. Also, it typically contains a progestin, again NOT bio-identical that sometimes also increases clotting or has adverse effects on blood vessels. Birth control is also taken ORALLY, where a higher concentration goes through the hepatic portal vein, where clotting factors are modified.
Patches, on the other hand, contain BIO-IDENTICAL estradiol (with a much weaker effect on clotting), the same estradiol that is produced by ciswomen's bodies. They deliver estradiol right into the blood (not ORALLY, much less goes through portal vein), exactly like ciswomen. So, in essence, there is absolutely no difference between bio-identical patches or getting estrogen directly from inside the body (i.e. ovaries), in terms of delivery or type of estrogen. Everything is the same. Studies with men who had prostate cancer, whose age ranged from late 40's to up to 91 (age increases risk of clotting) were given a high dose of patches and yet no clotting complications were observed, which is not surprising. In fact, researchers asserted it might be protective.
Ciswomen can go through surgery and yet have estradiol running through their bodies. If these women aren't told that they need to cease ovaries's production of hormones, then I wonder why transwomen are told to stop patches. I'm not a doctor but just makes no sense to me.
I continued taking estradiol and progesterone before and after surgery. No stops.

As always, verify this info with doctors and see what they have to say about it. Just expressing my opinion on the subject matter.