28. 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 be taken?
Answer: B
Rotate the bevel of the needle.
When blood flow stops during a venipuncture after the second tube is attached, rotating the bevel of the needle can help re-establish blood flow. This action may allow the needle to better align with the blood vessel, thereby resuming the flow.
A) Withdraw the needle completely.
Withdrawing the needle completely is not advisable in this situation, as it would eliminate the access to the vein and may lead to additional complications. Instead, adjusting the position of the needle is preferable to try to restore blood flow without losing venous access.
B) Rotate the bevel of the needle.
This action is correct because rotating the bevel can help the needle gain better access to the vein. Sometimes, slight adjustments in the needle's position can allow blood to flow again, making this a practical and effective solution.
C) Increase tourniquet pressure.
Increasing tourniquet pressure is not recommended after blood flow has ceased, as it can lead to discomfort for the patient and may not have any effect on re-establishing flow. It could also complicate the procedure by restricting blood flow more than necessary.
D) Activate a new evacuated tube.
Activating a new evacuated tube would not solve the problem of stopped blood flow; it simply means switching tubes without addressing the underlying issue of the needle's positioning. Blood must flow freely for the tube to fill, so this action would be ineffective in this context.
Conclusion
The recommendation to rotate the bevel of the needle is the most effective approach to re-establishing blood flow during a venipuncture. Other options either complicate the situation or do not address the issue at hand effectively. Hence, rotating the needle is a practical solution while maintaining venous access.