Frequent blood samples are a part of life during leukemia treatment. A complete blood count (CBC) tells the physician how effective the drugs are and helps determine the child's susceptibility to infection. It is important to measure blood chemistries to make sure that the liver and kidneys are not being damaged by treatment. (For a list of normal blood counts, see Appendix B, Blood Counts and What They Mean.) During induction and consolidation, transfusions are necessary when the red cell count or platelet count gets too low.
Blood specimens are primarily used for three purposes: to obtain a CBC, to evaluate blood chemistries, or to culture the blood to check for infection. A CBC measures the types and numbers of cells in the blood. Blood chemistries measure substances contained in the blood plasma to determine if the liver and kidneys are functioning properly. Blood cultures help evaluate whether the child is developing a bacterial or fungal infection. If only a CBC is needed, a finger poke will provide enough blood. Blood chemistries or cultures require one or more vials of blood obtained from a vein in the arm or the right atrial catheter.
Blood is usually drawn from the large vein on the inside of the elbow using a procedure similar to starting an IV, except that the needle is removed rather than left in the arm. The advice for starting an IV also applies to drawing blood from the arm.
Children with catheters usually have blood drawn from the catheter rather than the arm or finger. These procedures are described in Chapter 8, Venous Catheters.
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Although nobody gets a parenting manual or bible in the delivery room, it is our duty as parents to try to make our kids as well rounded, happy and confident as possible. It is a lot easier to bring up great kids than it is to try and fix problems caused by bad parenting, when our kids have become adults. Our children are all individuals - they are not our property but people in their own right.