During a venipuncture, the needle is in the vein and blood flow is established. When the second tube is attached, blood flow stops. Which of the following actions should the phlebotomist take?
Activate a new evacuated tube.
When blood flow stops after attaching the second tube during a venipuncture, the phlebotomist should activate a new evacuated tube to restore blood flow and ensure proper collection. This action allows for the continuation of the blood draw without needing to withdraw the needle or adjust its position.
Withdrawing the needle completely is not advisable as it disrupts the venipuncture site and can lead to complications such as hematoma formation. It would also require the phlebotomist to locate the vein again, wasting time and potentially causing discomfort to the patient.
Rotating the bevel of the needle does not guarantee that blood flow will resume and may even lead to further complications. If blood flow has stopped, it is likely due to the tube's vacuum or position rather than the needle's orientation, making this action ineffective.
Increasing tourniquet pressure may cause discomfort or harm to the patient and is generally not recommended once blood flow is established. The tourniquet's purpose is to engorge the vein prior to the draw, and adjusting it after blood flow has stopped may not resolve the issue.
Activating a new evacuated tube is the most effective action to take when blood flow stops. This allows for the release of the vacuum pressure and often restores blood flow, enabling successful collection without additional complications.
In venipuncture, if blood flow ceases after attaching a second tube, the phlebotomist should activate a new evacuated tube to resume blood collection. Other options, such as withdrawing the needle or adjusting the tourniquet, can lead to patient discomfort and complications. Proper technique ensures efficient and safe blood collection, maintaining the integrity of the procedure.
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