Which of the following purposes is served by anchoring the selected vein for a venipuncture using a winged infusion set?

Choice A Reason:
Explaining the procedure to both the parent and the child is crucial. It helps in preparing the child psychologically and ensures that the parent is informed and can provide support during the process. Clear communication can reduce anxiety and make the child more cooperative. It is also a part of informed consent, where the parent understands what the procedure entails and why it is necessary¹².

Choice B Reason:
Choosing not to tell the child when the needle insertion is coming might seem like a way to avoid causing them anticipatory anxiety. However, this approach can lead to mistrust. Children need to be prepared for what to expect, and surprising them can be more traumatic in the long run. It is better to be honest and use age-appropriate language to describe the sensation as a 'quick pinch' or 'poke'¹².

Choice C Reason:
Obtaining a heel stick is a common method for blood collection in infants, particularly newborns, as their veins are not as developed. However, for preschoolers, venipuncture is usually the preferred method because they have more developed veins, and it allows for a larger volume of blood to be collected if needed³.

Choice D Reason:
Obtaining a thumb stick is not a standard practice for blood collection in preschoolers. The thumb has bones and tendons close to the surface, which can increase the risk of injury. The preferred sites are the antecubital fossa of the arm or the back of the hand where the veins are more accessible and there is less risk of hitting bone³.

Choice A reason:
An alcohol-based hand rub is generally used for hand hygiene when the hands are not visibly soiled. It is effective against many types of microbes but is not the best option for hands that are visibly dirty or contaminated with proteinaceous materials, such as blood or body fluids. The CDC recommends washing hands with soap and water in these situations.

Choice B reason:
Sterile water rinse alone is not sufficient for cleaning hands that are visibly soiled. While sterile water can be used to rinse off debris, it does not have the cleaning or antimicrobial properties necessary to properly decontaminate the hands.

Choice C reason:
Soap and water are the recommended decontamination agents when hands are visibly soiled with blood or body fluids. The physical action of handwashing, combined with the detergent properties of soap, effectively removes soil and transient microorganisms. The CDC guidelines specifically state that hands should be washed with soap and water when they are visibly dirty or contaminated with proteinaceous materia.

Choice D reason:
An alcohol rinse, similar to an alcohol-based hand rub, is not adequate for cleaning visibly soiled hands. Alcohol is a disinfectant that is effective against many germs when used on clean hands but does not remove visible dirt or organic material well.