DAANCE Final Exam Questions and Verified
Answers with Rationale Latest Edition
2026/2027
Question 1
During outpatient intravenous sedation, an adult patient suddenly
becomes unresponsive, stops breathing, and turns cyanotic. The surgical
assistant checks for a carotid pulse and confirms it is absent. What is the
immediate, primary sequence of emergency action?
A. Call for help, activate emergency medical services, initiate high-
quality CPR (30 compressions to 2 breaths), and retrieve the
automated external defibrillator (AED).
B. Administer oral glucose tablets.
C. Place the patient in the Trendelenburg position and apply ice packs
to the forehead.
D. Inject a local anesthetic block into the oral vestibule.
Correct Answer: A
Rationale: Cardiac arrest requires immediate activation of emergency
services, prompt initiation of high-quality chest compressions and rescue
breathing, and rapid deployment of an AED to restore a perfusing
cardiac rhythm.
Question 2
Which of the following local anesthetic agents is an amide derivative
that is metabolized primarily by hepatic enzymes in the liver?
A. Lidocaine
, B. Procaine
C. Tetracaine
D. Benzocaine
Correct Answer: A
Rationale: Lidocaine is an amide-type local anesthetic broken down by
hepatic cytochrome P450 enzymes, unlike ester-type agents which are
metabolized by plasma esterases.
Question 3
What is the primary physiological purpose of incorporating a
vasoconstrictor such as epinephrine into a local anesthetic solution?
A. To constrict local blood vessels, reducing systemic absorption,
prolonging the duration of nerve block, and minimizing surgical
bleeding.
B. To speed up hepatic drug clearance.
C. To elevate resting blood glucose levels permanently.
D. To neutralize the basic pH of the tissue.
Correct Answer: A
Rationale: Vasoconstrictors decrease localized blood flow, keeping the
anesthetic molecules near the nerve trunk longer, which extends
anesthesia duration, decreases toxicity risk, and improves surgical
visibility.
Question 4
A patient scheduled for outpatient surgery under general anesthesia
reports a history of malignant hyperthermia in a close biological family
,member. Which of the following classes of anesthetic drugs must be
strictly avoided?
A. Halogenated volatile inhalation anesthetics (e.g., sevoflurane,
isoflurane) and depolarizing muscle relaxants (succinylcholine)
B. Amide local anesthetics like lidocaine
C. Intravenous benzodiazepines like midazolam
D. Normal saline intravenous crystalloid solutions
Correct Answer: A
Rationale: Malignant hyperthermia is a pharmacogenetic hypermetabolic
crisis triggered by volatile anesthetic agents and succinylcholine, leading
to severe muscle rigidity, hyperthermia, and metabolic acidosis.
Question 5
Which of the following monitoring devices is considered the gold
standard for verifying correct endotracheal tube placement and
continuously monitoring ventilation adequacy?
A. Capnograph (End-tidal carbon dioxide monitor)
B. Stethoscope only
C. Pulse oximeter
D. Manual blood pressure cuff
Correct Answer: A
Rationale: Capnography provides instant confirmation of tracheal tube
placement by detecting exhaled carbon dioxide and continuously tracks
respiratory function throughout the procedure.
, Question 6
When preparing an emergency drug kit for an oral and maxillofacial
surgery office, which medication is categorized as the primary first-line
drug for treating acute anaphylaxis?
A. Epinephrine
B. Aspirin
C. Atropine
D. Flumazenil
Correct Answer: A
Rationale: Epinephrine reverses laryngeal edema, bronchospasm, and
vascular collapse associated with severe allergic anaphylaxis through
alpha and beta adrenergic receptor stimulation.
Question 7
What is the primary physiological effect of a moderate overdose of a
central nervous system depressant sedative medication?
A. Respiratory depression, sedation, potential hypotension, and
lethargy or unconsciousness
B. Immediate skeletal muscle hypertonicity and seizures
C. Marked tachycardia and hypertension
D. Rapid increase in core body temperature
Correct Answer: A
Answers with Rationale Latest Edition
2026/2027
Question 1
During outpatient intravenous sedation, an adult patient suddenly
becomes unresponsive, stops breathing, and turns cyanotic. The surgical
assistant checks for a carotid pulse and confirms it is absent. What is the
immediate, primary sequence of emergency action?
A. Call for help, activate emergency medical services, initiate high-
quality CPR (30 compressions to 2 breaths), and retrieve the
automated external defibrillator (AED).
B. Administer oral glucose tablets.
C. Place the patient in the Trendelenburg position and apply ice packs
to the forehead.
D. Inject a local anesthetic block into the oral vestibule.
Correct Answer: A
Rationale: Cardiac arrest requires immediate activation of emergency
services, prompt initiation of high-quality chest compressions and rescue
breathing, and rapid deployment of an AED to restore a perfusing
cardiac rhythm.
Question 2
Which of the following local anesthetic agents is an amide derivative
that is metabolized primarily by hepatic enzymes in the liver?
A. Lidocaine
, B. Procaine
C. Tetracaine
D. Benzocaine
Correct Answer: A
Rationale: Lidocaine is an amide-type local anesthetic broken down by
hepatic cytochrome P450 enzymes, unlike ester-type agents which are
metabolized by plasma esterases.
Question 3
What is the primary physiological purpose of incorporating a
vasoconstrictor such as epinephrine into a local anesthetic solution?
A. To constrict local blood vessels, reducing systemic absorption,
prolonging the duration of nerve block, and minimizing surgical
bleeding.
B. To speed up hepatic drug clearance.
C. To elevate resting blood glucose levels permanently.
D. To neutralize the basic pH of the tissue.
Correct Answer: A
Rationale: Vasoconstrictors decrease localized blood flow, keeping the
anesthetic molecules near the nerve trunk longer, which extends
anesthesia duration, decreases toxicity risk, and improves surgical
visibility.
Question 4
A patient scheduled for outpatient surgery under general anesthesia
reports a history of malignant hyperthermia in a close biological family
,member. Which of the following classes of anesthetic drugs must be
strictly avoided?
A. Halogenated volatile inhalation anesthetics (e.g., sevoflurane,
isoflurane) and depolarizing muscle relaxants (succinylcholine)
B. Amide local anesthetics like lidocaine
C. Intravenous benzodiazepines like midazolam
D. Normal saline intravenous crystalloid solutions
Correct Answer: A
Rationale: Malignant hyperthermia is a pharmacogenetic hypermetabolic
crisis triggered by volatile anesthetic agents and succinylcholine, leading
to severe muscle rigidity, hyperthermia, and metabolic acidosis.
Question 5
Which of the following monitoring devices is considered the gold
standard for verifying correct endotracheal tube placement and
continuously monitoring ventilation adequacy?
A. Capnograph (End-tidal carbon dioxide monitor)
B. Stethoscope only
C. Pulse oximeter
D. Manual blood pressure cuff
Correct Answer: A
Rationale: Capnography provides instant confirmation of tracheal tube
placement by detecting exhaled carbon dioxide and continuously tracks
respiratory function throughout the procedure.
, Question 6
When preparing an emergency drug kit for an oral and maxillofacial
surgery office, which medication is categorized as the primary first-line
drug for treating acute anaphylaxis?
A. Epinephrine
B. Aspirin
C. Atropine
D. Flumazenil
Correct Answer: A
Rationale: Epinephrine reverses laryngeal edema, bronchospasm, and
vascular collapse associated with severe allergic anaphylaxis through
alpha and beta adrenergic receptor stimulation.
Question 7
What is the primary physiological effect of a moderate overdose of a
central nervous system depressant sedative medication?
A. Respiratory depression, sedation, potential hypotension, and
lethargy or unconsciousness
B. Immediate skeletal muscle hypertonicity and seizures
C. Marked tachycardia and hypertension
D. Rapid increase in core body temperature
Correct Answer: A
