A patient is scheduled for a total knee replacement. The surgeon explains the technique of creating a "bloodless" field for the surgery to the patient. What does this entail?
A) Intermittent autotransfusion
B) Postoperative blood salvage
C) Intraoperative blood salvage with reinfusion
D) Use of a pneumatic tourniquet
Ans: D
Feedback: Blood is conserved during surgery to minimize loss. During orthopedic surgery on a limb (eg, total knee replacement [TKR]), a pneumatic tourniquet may be applied to produce a "bloodless field." This technique has the advantages of keeping the surgical field dry, minimizing blood loss, and providing some additional limb anesthesia. Intraoperative blood salvage with reinfusion is used when a large volume of blood loss is anticipated. Postoperative blood salvage with intermittent autotransfusion also reduces the need for blood transfusion.
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