87. A phlebotomist is preparing to draw blood from an infant To calculate the blood volume that can be drawn which of the following types of patient information must the phlebotomist have
Answer: D
The phlebotomist must have the infant's weight to calculate the blood volume that can be drawn.
Weight is a crucial factor in determining the safe volume of blood that can be drawn from an infant, as it helps assess the proportion of blood that can be taken without risking the infant's health.
A) Blood type
Blood type is not necessary for calculating the volume of blood that can be drawn. While knowing the blood type is important for transfusions and compatibility, it does not influence the volume of blood that can safely be collected from a patient.
B) Height
Height is not a relevant factor in calculating blood volume in infants. Blood volume calculations are primarily based on weight, as it directly correlates with the amount of blood in the body, rather than height, which can vary independently of blood volume.
C) Birth date
The birth date may provide some context regarding the infant's age, but it does not directly inform the calculation of blood volume. Weight is a more critical measurement for determining how much blood can be drawn safely.
D) Weight
Weight is essential for calculating the blood volume that can be drawn from an infant. The volume of blood drawn should be a certain percentage of the infant's total blood volume, which is estimated based on their weight, making this information vital for ensuring the infant's safety during the procedure.
Conclusion
The correct answer is weight, as it directly correlates to the calculation of blood volume that can be safely drawn from an infant. All other options—blood type, height, and birth date—do not provide the necessary information for this calculation, highlighting the importance of weight in pediatric phlebotomy.