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Local Anesthesia Chapter 7 Questions and Answers Latest Version Graded A+
What is the most common site for local anesthesia injection in the mandible?✔✔ The mandibular foramen for the inferior alveolar nerve block
How does a local anesthetic solution prevent nerve impulses?✔✔ It blocks sodium channels in the nerve membrane
Why is aspiration performed before injecting local anesthetic?✔✔ To avoid injecting into a blood vessel
What does it mean if blood appears in the cartridge during aspiration?✔✔ The needle is in a blood vessel and should be repositioned
Why is it important to inject local anesthetic slowly?✔✔ To reduce tissue trauma and patient discomfort
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What should a clinician do if a patient experiences immediate swelling after injection?✔✔ Stop the injection and assess for a possible hematoma
What is one reason a patient may not get numb after an inferior alveolar nerve block?✔✔ The anesthetic was deposited too low or too far from the nerve
How can you confirm that the mental nerve block has worked?✔✔ The lower lip and chin on the same side feel numb
What is the landmark used for the greater palatine nerve block?✔✔ The greater palatine foramen near the second molar
Which part of the syringe engages the rubber stopper for aspiration?✔✔ The harpoon
What is the name of the bony landmark used to locate the mandibular foramen?✔✔ The coronoid notch
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What is the most important reason to review the patient’s medical history before anesthesia?✔✔ To identify conditions or medications that may affect anesthesia safety
How should a clinician respond to a patient reporting numbness lasting more than a day?✔✔ Explain possible nerve involvement and refer for evaluation if needed
What causes a burning sensation during injection of local anesthetic?✔✔ The acidity of the anesthetic solution
Why is epinephrine added to local anesthetics?✔✔ To constrict blood vessels and prolong anesthetic effect
What is a common reason for tissue blanching during injection?✔✔ Vasoconstriction from the anesthetic
What area is anesthetized by a nasopalatine injection?✔✔ The anterior hard palate from canine to canine
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