Increasing demand for blood during elective surgery has led to attempts to rationalize routine preoperative crossmatching to those operations when there is a reasonable (greater than 30%) chance of it being required. Results of a questionnaire returned by 86% of the urology units in Great Britain show that 41% continue to crossmatch 2 units of blood before transurethral prostatectomy. A review of 301 transurethral prostatectomies performed with preoperative grouping and saving of blood showed that only 11% of the patients required transfusion. The need for transfusion was significantly associated with presentation in chronic or acute on chronic retention (p <0.01), and the operative factors of weight of resection (p <0.0001) and degree of hemostasis (p <0.001). Therefore, a policy of routine preoperative blood grouping and saving is safe, and could be widely adopted, leading to financial saving and a decrease in wastage of blood that becomes too old to use.
- blood grouping and crossmatching
- blood transfusions
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