Final answer:
Remove the needle and dental cartridge (option c) immediately if blood is seen during aspiration, as this indicates potential intravascular needle placement. Then, dispose of them safely and prepare new ones for a reattempt at the injection, ensuring proper technique and site selection to avoid vascular penetration.
Step-by-step explanation:
When you see blood rapidly coming through the dental cartridge during aspiration, the correct next step would be to remove the needle entirely. The reason for this is the presence of blood suggests that the needle may be within a blood vessel, which could lead to the injected anesthetic entering the bloodstream, potentially causing systemic complications.
Therefore, the appropriate action is to:
- Stop the injection immediately.
- Carefully remove the needle.
- Dispose of the used cartridge and needle safely according to proper biohazard protocols.
- Prepare a new cartridge and needle.
- Reassess the injection site and technique before attempting another injection.
It is important to reassess and ensure that the new injection site is away from blood vessels to prevent a similar occurrence.