LOCAL ANESTHESIA -CDCA BOARD EXAM | Questions and Correct Answers | Latest Update

LOCAL ANESTHESIA -CDCA BOARD EXAM | Questions and Correct Answers | Latest Update What nerve supplies the tissue to the maxillary anterior lingual? - ANSWER -The Naso Palatine Nerve What nerve has been anesthetized if the lower lip is numb? - ANSWER -The Mental Nerve What nerve has been anesthetized if the soft palate is numb? - ANSWER -The Lesser Palatine A woman has immediate swelling on her face following a PSA injection. What was the cause? - ANSWER -Hit the Pteragoid Plexus What is the immediate treatment in office for a hematoma? - ANSWER -Cold pack What is the recommended treatment to the patient for a hematoma following the appointment? - ANSWER -Cold Pack for 1 day, then gentle heat What causes trismus? What is the patient care for trismus? - ANSWER -Trauma ( too much anesthetic in one place) or TMJ. Tx: Passive motions then stretching the muscles. When does anesthetic expire? - ANSWER -When the pH increases in the drug If you give a PSA, what root may not be anesthetized? - ANSWER -The MB root of the first molar V3 innervates all but? A. Mental. B. IA. C. Infraorbital. D. Preauricular - ANSWER -C. Infraorbital Where is the injection site for the buccal injection? - ANSWER -Buccal and Distal to the last molar at the height of the occlusal plane. The maxillary nerve is primarily? A. Sensory. B. Motor. C. Both - ANSWER -A. Sensory If you inject 1/3 of the needle on an IA and hit bone, what do you do? - ANSWER -Pull out and redirect over the incisors. What is the most common cause of needle breakage? - ANSWER -Bending the needle Inserting the needle too far in this injection risks hitting the pterygoid plexus? - ANSWER -PSA Patient experiences a sharp tingling pain and immediate anesthesia; what happened? - ANSWER -The needle went through the nerve. What should be the depth of the needle insertion for the PSA? - ANSWER -Half of the needle length. What gauge needle should be used for infiltration? - ANSWER -25 or 27 short. What is the purpose of vasoconstrictor? - ANSWER -Counteract the vasodilating properties of the anesthesia. What function do vasoconstrictors serve to prevent overdose? - ANSWER -They allow for slow absorption A patient has liver damage, what should you consider about administering amides? - ANSWER -Can cause system toxicity. Give cardiac dose The reason for most cases of post injection infection is? - ANSWER -Improper handling of armamentarium. What is the preservative of anesthetic solution? - ANSWER -Sodium Bisulfite If the patient experiences dehydration of the cornea following treatment, what nerve was involved? - ANSWER -Ophthalmic Nerve If a patient has atypical plasma cholinesterase, what drug will they have a problem metabolizing? - ANSWER -Esters The patient is experiencing difficulty breathing and goes unconscious, what should you give them? - ANSWER -Epi Pen When is the most important time to aspirate during injections? - ANSWER - Before deposition of anesthetic What nerve has been anesthetized if the anterior 2/3 of the tongue is numb? - ANSWER -The Lingual Nerve If you inject 1ml per minute, what is the expected outcome? - ANSWER -Good outcome If a patient received two cartridges of anesthetic, how much volume did they receive? - ANSWER -Either 3.6 or 3.4 The patient experiences burning injection, what is the probable cause? - ANSWER -Injecting too fast Patient has significant infection. What caused the difficulty of the pt. Achieving anesthesia? - ANSWER -The tissue is too acidic- the pH is too low. What probably caused a the lesson on the lower lip that was present the following day of a local anesthesia injection? - ANSWER -Self mutilation or trauma. What is the volume of a single cartridge of local anesthetic? - ANSWER -1.8 or 1.7 m