There may be circumstances that lead to a blood transfusion requirement. What you need to know is that you should try to reassure your clients that there is only a tiny risk involved in a TKR (total knee replacement) resulting in a blood transfusion. If they do need a transfusion, that does not really pose a risk either anymore.
In fact, the risk is so minimal, only about one in 14,000, that your client could have an adverse reaction to incompatible blood matching during a transfusion. The risks are so low because blood banks are extremely conscientious these days because they learned from past mistakes.
The blood banks actually do a routine screening for any and all potential infections and illness such as AIDS and Hepatitis B and C. It is only in the rarest of cases that the screening goes awry and the conditions of the blood go undetected. If your client has Dementia or Alzheimer’s disease, they won’t even be able to comprehend this level of risk or even the fact that there could potentially be a risk, so your job will more than likely just be to reassure them about the surgery.
The more you know though, the better you are able to display to your clients and their family members that you believe that With Age Comes Respect.