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Anesthesia
Anesthesia Study Guide
| Question | Answer |
|---|---|
| What is the least amount of time it should take to administer one cartridge of local anesthetic? | 1-2 minutes |
| Which technique would best prevent an overdose reaction to a local anesthetic? | Inject slowly |
| Mr Holland requires local anes. for subgingival cal remoal. Within sec. after a PSA injection his face becomes distended and swollen at the injection site. What is the most likely cause? | Hematoma |
| A contraindication for a patient with an allergy to bisulfites would be what? | Anesthetic containing a vasoconstrictor |
| The cardiac dosage for a vasoconstrictor is? | .04mg |
| Epi exerts the greatest effects on the? | Beta Receptors |
| The primary effect of local anesthetic occurs during the | Depolarization phase |
| Your pt. suddenly and unexpectedly moves so you contact the periosteum about 15 resulting in needle breakage. The needle is lost and cannot be readily retrieved. What is the UN-correct way to react? | Proceed with an incision and or probe to locate the fragment |
| Which of the following local anesthesia have the greatest propensity torward allergic reaction | Procaine and benzocaine |
| The palatal mucosa of the maxillary incisors is innervated by what nerve | nasopalatine nerves |
| What is the primary excretory organ for both types of LA | Kidneys |
| If you administer 180 mg of 2% lido with 1:100,000 epi to your healthy pt. how many cartridges have you administered? | 5 |
| What is the volume of LA solutions in a typical dental cartridge | 1.8 ml |
| Approximately how many carps of lido 2% plain can be given per appointment for a healthy 160 lb male? | 8 carps |
| Allergic reactions are commonly associated with preservative used to prevent oxidation of the vasoconstrictor. The preservative added to the cartridge is | Sodium Bisulfite |
| If 2 carps of 2% lido 1:100,000 are administered how many mg of epi did the patient recieve? | .36 mg |
| To obtain adequate anesthesia to the LA nerve, the needle must be located | superior to the mandibular foramen |
| A patient is experiencing an episode of hyperventilation. What is the appropriate emergency tx | have pt. breath into cupped hands |
| Which solubility factor primarily determines an ensthetic agent potency | lipid |
| Which nerve is involved in anesthetizing the facial gingival of the maxillary cuspid | ASA |
| Which of the following characterized acute generalized anaphylactic shock? | sudden loss of motor time, bronchial constriction with circulatory shut down |
| In what instance should a clinician respond to a positive aspiration by removing the syringe, changing the cartridge and redoing the procedure | when the clinician cannot see clearly that the aspiration was negative |
| Which needle gauge has the largest diameter? | 25 gauge |
| What immediate action should be taken by the clinician if the patient becomes unresponsive | Activate EMS |
| Why is infiltration anesthesia impractical for most mandible teeth? | The bone structure of the mandible is too dense |
| Which condition is a relative contraindication to the use of vasoconstrictors | hyperthroidism |
| which of the following explains the pt experiencing a momentary sensation of electric shock during the insertion phase of an injection | the needle contacts the nerve sheath |
| Besides the health status of the patient, what is the most improtant consideration in choosing an anesthetic | the length of time anesthesia is required |
| How much epi does lido 2% with 1:100,000 epi contain compared to 1:50,000 epi solution | half |
| Where is the insertion site for the LB injection | Distal and buccal to the last molar |
| Where are amides primarily metabolized | Liver |
| Where are esters primarily metabolized | blood by enzyme psuedocholinesterase |
| A dental hygienist selects a 30 gauge needle for the mandibular nerve block. Which of the following is a potential problem relating to this needle choice? | Inability to reach the target area |
| Which of the following describes the half life of a LA? | The rate at which the anesthetic is removed from the blood |
| A pt. medical hx absolutely contraindicated the use of a vasopressor, she is about to under go perio debridment on mand quad. Which agent will provide longest duration of pain control | Prilocaine 4% |
| To avoid possible episodes of syncope during the injection process, how should the patient's head be positioned? | same level as the heart |
| What does a small 1-2 mm bubble in the cartridge indicate? | nitrogen gas |
| What is the taget deposition area of the PSA nerve block | the area superior to the apex of the max sec. molar |
| Which condition is most likely to cause central nervous system stimulation followed by central nervous system depression | toxic overdose of LA |
| Which topical anesthetic is appropriate for a patient with a history of asthma and allergies to many foods and cometics | lidocaine |
| A patient claims and allergy to Novocaine, When asked to describe his reactions his lists shortness of breath, palpations, cold sweats, fainting, what are these symptoms more likey caused by? | apprehension about revieving dental care |
| Which is the following anesthetics has the shortest duration of actions? | Carbocaine 3% |
| Which nerve is not anesthetisized with the Gow Gates technique | IA, L, M, PSA |
| A patient with moderate perio needs SRP on F #12, 13 he has no med hx complications. What is the most appropriate anesthetic agent to administer? | Lido 2% 1:00,000 |
| What is the reason for difficulty in obtaining adequate anesthesia when there is infection neath the injection site | low pH of area inhibits the liberation of the free base of the anesthetic agent |
| An anaphylactic reaction to an administered LA is best treated with which two agents | oxygen and epi |
| What would cause a large bubble and a plunger to be extruded beyond the rim of the cartridge | freezing the anesthetic solution |
| Where is the injection site for the IA nerve block | bordered medially by pterygomandibular raphe, laterally by the internal oblique ridge at the height of the coronoid notch |
| What preservatives is included in Mepivicaine 3% to preserve it's shelf life | mehtylparaban |
| a 140 lb pt w/ severe systemic cardio disease comes to your office for an SRP, you plan to administer 2 % lido 1:100,000 how many carps ane anes. can you give | 2.2 |
| what are the potential outcomes of administering lido to a chronic alcoholic | slower than normal biotransformation rate |
Created by:
daisenmurray
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