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Association between Perioperative Blood Transfusions and Clinical Outcomes in Patients Undergoing Bladder Cancer
Juan P Cata1, Javier Lasala2, Greg Pratt3
1Department of Anesthesiology and Perioperative Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Anesthesiology and Surgical Oncology Research Group, Houston, TX 77030, USA.
Abstract:
Background. Perioperative blood transfusions are associated with poor survival in patients with solid tumors including bladder cancer. Objective. To investigate the impact of perioperative blood transfusions on oncological outcomes after radical cystectomy. Design. Systematic review and meta-analysis. Setting and Participants. Adult patients who underwent radical cystectomy for bladder cancer. Intervention. Packed red blood cells transfusion during or after radical cystectomy for bladder cancer. Outcome Measurements and Statistical Analysis. Recurrence-free survival (RFS), cancer-specific survival (CSS), and overall survival (OS). We calculated the pooled hazard ratio (HR) estimates and 95% confidence intervals by random and fixed effects models. Results and Limitation. Eight, seven, and five studies were included in the OS, CSS, and RFS analysis, respectively. Blood transfusions were associated with 27%, 29%, and 12% reduction in OS, CSS, and RFS, respectively. A sensitivity analysis supported the association. This study has several limitations; however the main problem is that it included only retrospective studies. Conclusions. Perioperative BT may be associated with reduced RFS, CSS, and OS in patients undergoing RC for BC. A randomized controlled study is needed to determine the causality between the administration of blood transfusions and bladder cancer recurrence.
