I also have a genetic predisposition to blood clots. Do you by any chance have Factor V Leiden? You are fortunate that you and your doctor are aware of this before
your surgery. This way, the doctors can take extra precautions so that you won't experience a blood clot.
I had a TAH/BSO a little over 5 years ago. I was admitted to the hospital with a DVT when I was 3 weeks post op. I wish I had known ahead of time that I had Factor V Leiden. If I had known, my clot could most likely have been avoided. Let me assure you that my clot was not a direct complication from the hysterectomy. It could have been avoided if I had known about my predisposition to clots.
I'm assuming you have a hematologist. Talk to him/her about being anticoagulated before surgery. My sister had a hysterectomy Sept. 1 with an abdominal incision. She also has Factor V Leiden, and was anticoagulated before surgery and placed on coumadin afterwards. She's doing just fine.
I'm not sure whether or not LSH will eliminate the risk of a blood clot. It may lessen the risk, but I doubt it will prevent it. Talk to your gyn and your hematologist.
It's frightening, I know. I'm facing gallbladder surgery, and I too worry about another clot. I've already talked with my hematologist about this and he'll make sure that I'm anticoagulated before surgery and will work with me after surgery.
I wish you the very best.