What is the transfusion factor used in the volume calculation formula for children?

The transfusion factor of 0.5 is the correct choice for volume calculations when administering blood products to children. This factor reflects the smaller blood volume in children compared to adults and aims to ensure that they receive an appropriate transfusion volume based on their body size and weight.

When calculating transfusion volumes in pediatric patients, it is vital to avoid over-transfusion, which can lead to complications. The use of 0.5 as the factor helps to tailor transfusions more accurately to the needs of a child, considering factors such as age and weight, ultimately enhancing the safety and efficacy of transfusions in this vulnerable population. This factor acknowledges that children typically require less volume of blood product per kilogram of body weight compared to adults, ensuring that the transfusion meets their specific physiological needs.