Estimated blood loss and transfusion requirements of radical cystectomy.

PURPOSE: Radical cystectomy has been associated with significant blood loss and/or transfusion requirement. We defined and characterized blood loss and transfusion parameters in this population.
MATERIALS AND METHODS: We reviewed the records of 304 consecutive patients who underwent radical cystectomy and urinary diversion between October 1995 and July 2000. Charts were examined, and univariate and multivariate logistic regression analysis was performed to evaluate estimated blood loss and the transfusion requirement.
RESULTS: Complete blood loss data were available in 297 cases. Overall 45% of patients had anemia preoperatively. Median estimated blood loss was 600 ml. (range 100 to 3,000). On univariate analysis increased estimated blood loss was related to patient age, American Society of Anesthesiologists score, longer operative time and paralytic ileus. Overall transfusion was done in 88 of 297 cases (30%) with a median requirement of 2 units (range 1 to 10). The transfusion rate in male and female patients was 26% and 40%, respectively (p <0.05). On univariate analysis female gender, ileal conduit diversion and lower preoperative hematocrit correlated with transfusion need (p = 0.04, <0.001 and <0.001, respectively). On multivariate logistic regression analysis lower preoperative hematocrit, increased estimated blood loss, major complications and ileal conduit diversion type correlated with a higher transfusion rate (odds ratio 8.34, 5.88 and 4.60, respectively).
CONCLUSIONS: Acute blood loss anemia is common in patients undergoing radical cystectomy, and predicting blood loss and transfusion requirements remains difficult. These data indicate the need for continued refinement in surgical techniques to decrease blood loss as well as for strategies designed to decrease the need for blood transfusion.