Blood audit evidenced-based cross-match requesting for lumbar spine surgery
Abstract
STUDY DESIGN: Complete audit cycle.
OBJECTIVE: Radical overhaul of the blood ordering practices made by the spinal surgery department, in order to maximize the efficient use of blood products.
SUMMARY OF BACKGROUND DATA: Spinal surgeons request blood-based on historical practice and not evidence. Blood is a scarce resource. Provision relies on voluntary donations from the general population. However, the donor population has been reduced because of the risks of variant Creutzfeldt-Jakob disease. Hence, the responsibility rests with clinicians to optimize their management of blood.
METHODS: The spinal surgery department database was accessed to identify all patients who underwent elective lumbar spine operations (excluding deformity) during 2002 to 2003. These records were then cross-referenced with the blood transfusion department database. From the results the cross-match to transfusion (C:T) ratios and transfusion indexes (TI) were calculated for the procedures. A new tariff was agreed between the surgeons, anesthetists, and transfusion department. This was then audited prospectively.
RESULTS: There were 664 cross-match requests made during 2002 to 2003, and only 40 U was transfused. This gave a C:T ratio of 16.6:1. The prospective audit resulted in only 58 U being cross-matched and 5 were transfused. This reduced the C:T ratio to 11.5:1.
CONCLUSION: Implementing evidence based cross-match protocols can make significant savings in time, manpower, and money.
How strong is the evidence?
Evidence Hub reads this as a cohort study, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence.
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