Preoperative cross-matching: are we using blood efficiently?

Introduction: Additional blood is required perioperatively to compensate for blood loss for patients undergoing major surgery. The hospital trust policy uses Adult Maximum Surgical Blood Order Schedule (MSBOS) suggesting how many blood units should be cross matched for a certain procedure. In 2015 there was a 40% drop in blood donations putting the UK blood bank safety levels at risk. The cost of one unit of blood is £124.46. Because of this it is important we adhere to the cross match guidelines as higher orders can be wasteful and very costly.

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