Can you advise on breast fat transfer & family history of malignant hypothermia?

You can always consider having the procedure done under local anesthesia.,personally I am not a fan of fat transfer anywhere in the body because the results are so poor. Breast implants can also be placed under local anesthesia. In the meantime you should take the genetic test even if you don't have surgery planned

Dear gouldk1,
you should be healthy prior to surgery and in some cases, you might need a clearance from your doctor. Every plastic surgeon has his own preoperative protocol which he recommends to his patients. I would suggest you to discuss this with your plastic surgeon.
Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

If you do your procedure awake under local anesthesia, you are not at risk. With general anesthesia, there is risk. Dantrolene is used to treat the problem and not to prevent it.

Malignant Hyperthermia (MH) is a very rare but deadly reaction. Dantrolene is a requirement in the US for all certified surgical centers who use general anesthesia.
An option is to do your procedure under either local anesthesia (which would be tough) or IV sedation which we use daily.
Best wishes.
Dr Taranow