OMSA Exam #2 2025 Questions and
Answers
Why do you pull back on the plunger of a local anesthetic before injecting? - ANS Helps avoid
injecting local anesthetic directly into a blood vessel
Why are local anesthetics combined with vasoconstrictors? - ANS To slow uptake and reduce
toxicity, to increase duration, and decrease bleeding at surgical site
What is the most common side effect of propofol (Diprivan)? - ANS Decreases blood pressure
What are two of the most common vasoconstrictors added to local anesthetics? -
ANS epinephrine and levonordefrin
What is a long acting anesthetic? - ANS bupivicaine (Marcaine)
What is the suggested maximum dose of lidocaine for a normal adult? - ANS 13 carpules of
2% lidocaine with 1 : 100,000 epinephrine
What is a common error in taking an accurate blood pressure? - ANS Using a small cuff on a
large patient
What is nitrous oxide normally used for in the OMS office? - ANS an analgesic
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, What is the main reason that 100% oxygen is given after nitrous oxide? - ANS to prevent
diffusion hypoxia
Local anesthetics do not eliminate the sensation of what? - ANS Pressure
What is the most useful property of narcotic analgesics such as Fentanyl and Demerol? -
ANS Analgesia (pain relief)
What is the reversal agent for narcotic analgesics? - ANS Narcan (naloxone)
What is the primary analgesia for an OS patient under sedation? - ANS local anesthesia
What is the most important and possibly life threatening side effect of narcotic analgesics? -
ANS Respiratory depression
What drug is classified as a barbiturate? - ANS methohexital (Brevital)
Barbiturate anesthetics have what properties? - ANS Low incidence of nausea and vomiting,
ability to cause brief apnea, and rapid onset of action
What is a characteristic of Brevital? - ANS It is stable for 24 hours when prepared with sterile
water
What is an effect that is characteristic of barbiturate anesthetics? - ANS Detoxified by the
liver and excreted by the kidneys
What are possible side effects of barbiturate anesthetics? - ANS Hiccups, laryngospasm, and
cough
Pg. 2 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
Answers
Why do you pull back on the plunger of a local anesthetic before injecting? - ANS Helps avoid
injecting local anesthetic directly into a blood vessel
Why are local anesthetics combined with vasoconstrictors? - ANS To slow uptake and reduce
toxicity, to increase duration, and decrease bleeding at surgical site
What is the most common side effect of propofol (Diprivan)? - ANS Decreases blood pressure
What are two of the most common vasoconstrictors added to local anesthetics? -
ANS epinephrine and levonordefrin
What is a long acting anesthetic? - ANS bupivicaine (Marcaine)
What is the suggested maximum dose of lidocaine for a normal adult? - ANS 13 carpules of
2% lidocaine with 1 : 100,000 epinephrine
What is a common error in taking an accurate blood pressure? - ANS Using a small cuff on a
large patient
What is nitrous oxide normally used for in the OMS office? - ANS an analgesic
Pg. 1 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
, What is the main reason that 100% oxygen is given after nitrous oxide? - ANS to prevent
diffusion hypoxia
Local anesthetics do not eliminate the sensation of what? - ANS Pressure
What is the most useful property of narcotic analgesics such as Fentanyl and Demerol? -
ANS Analgesia (pain relief)
What is the reversal agent for narcotic analgesics? - ANS Narcan (naloxone)
What is the primary analgesia for an OS patient under sedation? - ANS local anesthesia
What is the most important and possibly life threatening side effect of narcotic analgesics? -
ANS Respiratory depression
What drug is classified as a barbiturate? - ANS methohexital (Brevital)
Barbiturate anesthetics have what properties? - ANS Low incidence of nausea and vomiting,
ability to cause brief apnea, and rapid onset of action
What is a characteristic of Brevital? - ANS It is stable for 24 hours when prepared with sterile
water
What is an effect that is characteristic of barbiturate anesthetics? - ANS Detoxified by the
liver and excreted by the kidneys
What are possible side effects of barbiturate anesthetics? - ANS Hiccups, laryngospasm, and
cough
Pg. 2 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
