85. A dialysis patient in the ICU has a shunt placement in the right forearm and an IV placed in the left hand. Which of the following options best describes the optimal collection of a CBC?
Answer: A
The optimal collection of a CBC is from the right antecubital fossa.
Collecting a CBC from the right antecubital fossa is the best choice because it is closest to the shunt placement, allowing for adequate blood flow while avoiding the complications that may arise from using the site of an active IV line.
A) The right antecubital fossa
This option is correct as the right antecubital fossa is the optimal site for blood collection in this scenario. It is crucial to avoid the shunt site and the IV line, and the antecubital fossa provides a large vein which is ideal for drawing blood, ensuring a sufficient sample for the CBC.
B) The right hand
Collecting from the right hand is not ideal because it is too far from the shunt placement, which may result in inadequate blood flow and a lower quality sample. Additionally, it may also be more difficult to access larger veins in the hand compared to the antecubital fossa.
C) The left antecubital fossa
While the left antecubital fossa could be considered, it is not optimal due to the presence of the IV in the left hand. Using this site could lead to contamination of the sample and may compromise the integrity of the results.
D) Capillary collection of the left hand
Capillary collection is not suitable for a CBC, as it generally provides a smaller volume of blood and may not be representative of the patient’s overall blood status. Additionally, the left hand is compromised due to the IV, making this option less reliable for an accurate CBC.
Conclusion
The right antecubital fossa is the most appropriate site for collecting a CBC in this scenario, as it avoids complications associated with the shunt and IV line. All other options either compromise the quality of the sample or introduce the risk of contamination, making them unsuitable for accurate diagnostic purposes.