During venipuncture, what indicates successful venous entry?

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Multiple Choice

During venipuncture, what indicates successful venous entry?

The presence of a flash of blood in the needle hub shows the needle tip has entered a vein and blood is entering the needle lumen, confirming successful venous entry. This flashback is the standard sign that access to the vein has been achieved and you can proceed with drawing blood. Pain alone isn’t a reliable indicator of venous entry, since discomfort can occur from tissue contact even if the vein isn’t properly accessed. The tourniquet’s release isn’t a measure of entry and removing the needle immediately would stop the procedure and risk injury or improper collection.

The presence of a flash of blood in the needle hub shows the needle tip has entered a vein and blood is entering the needle lumen, confirming successful venous entry. This flashback is the standard sign that access to the vein has been achieved and you can proceed with drawing blood.

Pain alone isn’t a reliable indicator of venous entry, since discomfort can occur from tissue contact even if the vein isn’t properly accessed. The tourniquet’s release isn’t a measure of entry and removing the needle immediately would stop the procedure and risk injury or improper collection.

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