How can I ensure good blood flow to my breast tissue?

I would recommend just trying to lead a healthy lifestyle by getting rest, staying hydrated, and not smoking.. your doctor can tell you other tips in accordance with your medical history...

not sure what you are going to undergo but there are some basic ideas for your mastectomy to get better blood flow to your skin flaps: 1) something you control: do not smoke! 2) chose a breast surgeon who understands the impact the mastectomy has on blood flow to the mastectomy flaps 3) chose a plastic surgeon who is experienced in this surgery 4) chose a facility that is experienced and has equipment such as a SPY machine to assess the circulation to the skin. 

Blood flow is dependent on a few things but mainly it is the tension of a tissue expander under the overlying skin. Inflating a tissue expander after mastectomy can be done as slowly or quickly depending on your skin. To be safe and ensure a robust blood supple, the tissue expander can be expanded slowly over a few weeks. If your mastectomy is a certain size and the breast envelope is reasonable, a permanent implant can be placed immediately at the time of mastectomy without stressing the overlying skin. Your plastic surgeon is the best one to guide you on your particular situation. Good Luck!