Perioperative allogeneic blood transfusion rate were lower in the Gelfoam group ( 34.1 % vs. 58.5 % , P = 0.046 ) ; moreover , length of stay in patients with the use of absorbable gelatin sponge ( 12.58 d ) was significantly shorter ( P = 0.009 ) than the patients in the control group ( 14.46 d ) .