Impact of perioperative blood transfusion on survival of patients undergoing laparoscopic gastrectomy for gastric cancer.

Purpose: Previous studies have suggested that perioperative blood transfusion is associated with poor prognosis in patients undergoing radical gastrectomy for gastric cancer. The purpose of this study was to evaluate the impact of blood transfusion on the long-term survival of such patients. Methods: Short- and long-term outcomes were retrieved from a prospectively collected database of patients who underwent laparoscopic gastrectomy with radical intent for gastric cancer. Results: A total of 309 patients who underwent laparoscopic radical gastrectomy were evaluated. Sixty-one (19.7%) received blood transfusions during or within 30 days after gastrectomy. These patients were typically older, had lower preoperative hemoglobin levels, had a more advanced cancer stage, had more than two comorbidities, had a higher rate of postoperative 30-day complications, and had a higher conversion rate. The overall survival (OS) (p=0.040) and disease-free survival (DFS) (p=0.004) were significantly decreased in patients who received blood transfusions. Multivariate analysis revealed that perioperative blood transfusion was not independently associated with decreased OS and DFS but that cancer stage and having more than two comorbidities were independent risk factors. Conclusion: Perioperative blood transfusion was associated with decreased OS and DFS in this patient series, but this apparently reflected the relatively poor medical condition of these patients requiring gastrectomy and was not a causative relationship.