Vibration resistance of conventional blood transportation kits / 军事医学

ABSTRACT

Objective To improve vibration resistance of conventional blood transportation kits and mitigate hemolysis during transportation.Methods The structure of a blood transportation kit was modified.We installed a suspension brac-kets within the kit,added buffer material between the brackets,and tested the vibration-suppressing effect compared with the conventional blood transportation kit.Results Rubber and plastic materials between brackets were added,and double membrane suspension brackets were installed.After 4 and 6 min of vibration,free hemoglobin(FHb)[(1559.7 ±1038.5) and(1886.2 ±1023.8)mg/L],lactic dehydrogenase levels[(135.3 ±67.7)and(195.7 ±123.6)U/L]and hemolysis rate[(0.35 ±0.34)%and(0.42 ±0.38)%]in the conventional transportation kit were significantly higher than in the vibration-suppressing kit.K+did not change significantly,and was comparable in both groups at each time point.After 4 and 6 min of vibration, FHb in the conventional transportation kit exceeded the standard.However, after 12 min of vibration,FHb[(560.1 ±342.3)mg/L]in the vibration-suppressing kit were within the standard range.No bacterial growth was detected in either group.Conclusion The vibration-suppressing kit under research shows a better 1986vibration-suppressing effect,which could improve blood support capability in case of emergency.