"I know that introducing any blood products tends to turn off erythropoiesis, the body's natural blood-making process in the bone marrow. Therefore, although my patient may be stable after only one unit, I know that his or her red blood count will fall again when natural erythropoiesis is temporarily suspended. This is the whole reason no one really orders just one unit of blood. If it's bad enough to require blood at all, the starting point is two units."

This is a trick question. It involves knowledge of transfusion strategies and, as such, it probably will never be asked. However, you might be asked a similar type of question that will challenge a particular protocol used that only has tangential relevance to your vocastion, so it is used here for practice.

"Yes, if I had ordered two units for a reason, I would feel that the reason hadn't really changed. Therefore, I would stick with my original order for transfusing two units."