MATERIALS AND METHODS The safety of 300 bagged donor blood units collected with respect to, viability, shelf life and blood anticoagulant ratio at the UMTH blood banking facility were prospectively analyzed. All the units at the time of the study were identified with their donor numbers, the bag type, and weighed with Mettler weighing balance [METTLER PE 3000, METTLER Instrument AG CH-8606 GREIFENSEE –ZURICH – made in Switzerland] and recorded. Ten donor bags (plastic bag with 63mls of CPD-A1 anticoagulant) were weighed in each category of bag type and an average weight is determined. Then the actual weight of the collected blood was determined by subtracting the bag weight from the bagged blood weight. There after the actual blood volume was evaluated with the formula. Blood Volume = Expected bag weight - weight of bag Specific gravity of blood. The unitary blood volume of blood in the blood container was recorded and separated into low volume units, normal volume unit [figures between 11 11
405 and 550mL i.e 450 or 500mL + 10% ] and over
those that exceeded the required volume. The data 11 11
generated are analyzed using SPSS version , 2002
statistical package and are presented in tables.
MATERIALS AND METHODS The safety of 300 bagged donor blood units collected with respect to, viability, shelf life and blood anticoagulant ratio at the UMTH blood banking facility were prospectively analyzed. All the units at the time of the study were identified with their donor numbers, the bag type, and weighed with Mettler weighing balance [METTLER PE 3000, METTLER Instrument AG CH-8606 GREIFENSEE –ZURICH – made in Switzerland] and recorded. Ten donor bags (plastic bag with 63mls of CPD-A1 anticoagulant) were weighed in each category of bag type and an average weight is determined. Then the actual weight of the collected blood was determined by subtracting the bag weight from the bagged blood weight. There after the actual blood volume was evaluated with the formula. Blood Volume = Expected bag weight - weight of bag Specific gravity of blood. The unitary blood volume of blood in the blood container was recorded and separated into low volume units, normal volume unit [figures between 11 11
405 and 550mL i.e 450 or 500mL + 10% ] and over
those that exceeded the required volume. The data 11 11
generated are analyzed using SPSS version , 2002
statistical package and are presented in tables.
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