Abstract: Objective To observe the Influence of pneumatic tube system on some parameters of whole blood cells. Method 30 bags of stored whole blood (450ml each) were selected to study, The bags of stored whole blood were randomly assigned to damping group or non-damping group, 15 bags in each group. Parameters of whole blood cells before the transportation were detected by Sysmex XS-800i automatic blood analyzer. The morphology of red blood cells stained with Methvlem blue and Eostm Y was observed by OLYMPUS microscope. Results There were no significant difference between damping group and non-damping group in parameters of whole blood cells (HB, HCT, RBC, MCV, MCH, MCHC, RDW, MPV, PCT, PLT, PDW, WBC) before and after the transportation(P>0.05). The statistical differences were only found in Hb, RBC, MCV, MCHC, PCT and PLT when the damping group and non-damping group stored for 6h after transportation (P<0.05). In addition, whether or not the damping measures are taken, the PTS has limited impact on the morphology of red blood cells in whole blood stored for 5 days when they were stored at a certain temperature and time after the transportation. Conclusions Pneumatic tube system has limited impact on parameters of whole blood. Immediate whole blood transfusion after transportation is safe in clinical blood transfusion.

Key words: Pneumatic tube system, Whole blood, Blood cell, Morphology