800cc Moderate Plus Too Big for a 34 Band Size?

I am surprised our surgeon put those in you without ever consulting you about the size. Breast implants need to be fitted acccording to several different measruements. If you are 5'8" and weigh 250 lbs this may be an appropriate size implant but not if you are 4'11" and 100 lbs. judging from your other question about implants protruding beyond your chest, it sounds as if this implant is too large for our.

800 cc implants are very large for anyone.  I hope that you had discussions with your surgeon about breast implant sizing prior to your surgery.  That said, if you were demanding 800 cc implants and your surgeon agreed, there are limits about how much volume can be put in an implant of a given base diameter.  High profile implants can fit more volume in a smaller base diameter (implant width).  However, there is only so much volume that can be placed before a larger diameter implant would have to be used.  Good luck.

I would caution against this implant size, as it will most definitely lead to implant malposition.  Generally speaking,larger implants increase the risk of complications such as implant malposition, which can be very difficult to correct longterm.  In order to make an accurate size recommendation, I would need to assess your chest wall and breast mound measurements and characteristics.  Unfortunately, there is not a general rule of thumb or objective criteria to implant selection.

Your plastic surgeon will perform several measurements of your chest wall and breast anatomy and determine a range of implants that both fit your chest wall and reach your desired goals.
The next step is to try on this range of implants in the office with your doctor.   The key to this success is showing your surgeon the body proportion you desire with a bra sizer and allowing your surgeon to guide you to the right implant.   It will be much easier to communicate in implant cc's than cup size when determining the appropriate implant for you.
I wish you a safe recovery and fantastic result.
Dr. Gill