title: Evaluation of the pneumatic tube system for transportation of packed red cell units.
abstract: BACKGROUND
  Pneumatic tube system (PTS) is commonly used in hospital settings to transport blood samples to diagnostic laboratories. At our blood center, we receive blood requisitions via the PTS, but units are carried to the ward by human courier. Recently we considered using the PTS for transporting blood units. Since, there are reports of hemolysis in blood samples sent through the PTS, we evaluated this system for transporting red cell units.
  
  
  OBJECTIVE
  The aim was to assess the effect of PTS transport on the quality of packed red cell units.
  
  
  METHODS
  A total of 50 red blood cells units (RBC), (25 non-irradiated and 25 irradiated) were subjected to transportation through the PTS. The control arm in the study was age-matched RBC units not subjected to PTS transport. Each RBC unit was evaluated for hemoglobin (Hb), lactate dehydrogenase, potassium and plasma hemoglobin (Hb). The paired t-test was used to compare these parameters, and the P value was calculated.
  
  
  CONCLUSIONS
  The percentage of hemolysis after transportation through PTS was below the recommended guidelines. Delivery of the blood unit to the wrong station, bags lying unattended at the destination were few of the problems that had to be addressed. To conclude, though the PTS is a safe means of transporting blood products with reduction in the turn-around-time, it must be validated before use.
authors.affiliation: Department of Transfusion Medicine, Tata Medical Center, Kolkata, West Bengal, India.
authors.forename: Supriya
authors.initials: S
authors.lastname: Dhar
authors.affiliation: Department of Transfusion Medicine, Tata Medical Center, Kolkata, West Bengal, India.
authors.forename: Sabita
authors.initials: S
authors.lastname: Basu
authors.affiliation: Department of Transfusion Medicine, Tata Medical Center, Kolkata, West Bengal, India.
authors.forename: Subhosmito
authors.initials: S
authors.lastname: Chakraborty
authors.affiliation: Department of Transfusion Medicine, Tata Medical Center, Kolkata, West Bengal, India.
authors.forename: Subir
authors.initials: S
authors.lastname: Sinha
keywords: Hemolysis; pneumatic tube system; transportation of red cell units; validation