AVTAA Veterinary Technician Specialty
Examination in Anesthesia & Analgesia
Practice Questions with Correct Answers
and Rationales
Question 1
Give the 5-letter acronym (initials) of the association that certifies veterinary
technician specialists in clinical practice.
Correct Answer
AVTCP- Academy of veterinary technicians in clinical practice
Question 2
No more than one-half (20 hours) of the required 40 hours of CE for the VTS (Surgery)
exam can be acquired online.
True
False
Correct Answer
true
Question 3
work experience for ECC
Correct Answer
6,000 hours (3 years)
Page 1 of 74
,Question 4
How many continuing education hours related to anesthesia must be acquired to
qualify for the VTS (Anesthesia) exam?
6
10
20
40
Correct Answer
40
Question 1: Which of the following best describes the primary mechanism by which
inhalant anesthetics such as isoflurane produce general anesthesia in veterinary
patients?
A. Competitive antagonism at NMDA receptors
B. Potentiation of GABA-A receptor activity leading to increased chloride influx
C. Inhibition of voltage-gated sodium channels exclusively
D. Direct blockade of peripheral nociceptors
CORRECT ANSWER: B. Potentiation of GABA-A receptor activity leading to increased
chloride influx
Rationale: Inhalant anesthetics primarily enhance inhibitory neurotransmission via
GABA-A receptors, increasing chloride conductance and hyperpolarizing neurons.
This central nervous system depression produces the anesthetic state. NMDA
antagonism is more characteristic of dissociative agents, while sodium channel
blockade is the mechanism of local anesthetics.
Question 2: In a canine patient undergoing ovariohysterectomy under general
anesthesia, which monitoring parameter most reliably indicates adequate tissue
perfusion?
A. Capillary refill time alone
B. Mean arterial blood pressure combined with mucous membrane color
C. Heart rate variability
D. End-tidal carbon dioxide concentration
CORRECT ANSWER: B. Mean arterial blood pressure combined with mucous
membrane color
Page 2 of 74
,Rationale: Mean arterial pressure provides a quantitative assessment of driving
pressure for organ perfusion, while mucous membrane color and capillary refill offer
qualitative indicators of peripheral perfusion. Heart rate variability is nonspecific,
and end-tidal CO2 primarily reflects ventilation and cardiac output indirectly rather
than direct tissue perfusion.
Question 3: Which injectable anesthetic agent is most appropriate for induction in a
cat with hypertrophic cardiomyopathy due to its relative cardiovascular stability and
minimal myocardial depression?
A. Propofol
B. Alfaxalone
C. Ketamine
D. Thiopental
CORRECT ANSWER: B. Alfaxalone
Rationale: Alfaxalone provides smooth induction with less cardiovascular depression
than propofol or thiopental and avoids the sympathetic stimulation and potential
increased myocardial oxygen demand associated with ketamine, making it
preferable in patients with hypertrophic cardiomyopathy.
Question 4: During maintenance of anesthesia with sevoflurane in a dog, the
anesthetist observes progressive hypercapnia despite an increased respiratory rate.
What is the most likely underlying cause?
A. Increased dead space ventilation
B. Hypermetabolic state
C. Equipment malfunction causing rebreathing
D. Excessive depth of anesthesia depressing ventilatory drive
CORRECT ANSWER: D. Excessive depth of anesthesia depressing ventilatory drive
Rationale: Deep planes of inhalant anesthesia dose-dependently depress the
respiratory centers, reducing alveolar ventilation and elevating PaCO2 even if
respiratory rate appears increased due to shallow tidal volumes. Rebreathing or
dead space issues would typically present with different capnograph patterns.
Question 5: Which local anesthetic has the longest duration of action when used for a
femoral-sciatic nerve block in a canine patient?
A. Lidocaine
B. Mepivacaine
C. Bupivacaine
D. Procaine
CORRECT ANSWER: C. Bupivacaine
Page 3 of 74
, Rationale: Bupivacaine is a long-acting amide local anesthetic with high protein
binding and lipid solubility, providing 4–8 hours of sensory blockade. Lidocaine and
mepivacaine are intermediate-acting, while procaine is short-acting and rarely used
in modern veterinary practice.
Question 6: In calculating oxygen flow rates for a non-rebreathing circuit in a 4 kg
feline patient, what is the recommended minimum fresh gas flow to prevent
rebreathing?
A. 50 mL/kg/min
B. 100–150 mL/kg/min
C. 200–300 mL/kg/min
D. 500 mL/kg/min
CORRECT ANSWER: C. 200–300 mL/kg/min
Rationale: Non-rebreathing systems require high fresh gas flows (typically 200–300
mL/kg/min) to flush exhaled gases and prevent rebreathing of CO2. Lower flows are
appropriate only for rebreathing (circle) systems with functional CO2 absorbents.
Question 7: Which of the following is the most sensitive early indicator of malignant
hyperthermia in a susceptible swine patient under inhalant anesthesia?
A. Elevated body temperature
B. Increased end-tidal CO2
C. Muscle rigidity
D. Tachycardia
CORRECT ANSWER: B. Increased end-tidal CO2
Rationale: An unexplained rise in end-tidal CO2 is the earliest and most sensitive
clinical sign of malignant hyperthermia due to dramatically increased CO2
production from uncontrolled muscle metabolism, often preceding temperature
elevation, rigidity, or cardiovascular changes.
Question 8: When performing an epidural injection in a dog at the lumbosacral space,
which anatomical landmark is used to identify the correct site?
A. Wings of the ilium and the dorsal spinous process of L7
B. Greater trochanter and ischial tuberosity
C. Cranial border of the sacrum and the last lumbar vertebra
D. Iliac crests and the first caudal vertebra
CORRECT ANSWER: A. Wings of the ilium and the dorsal spinous process of L7
Rationale: The lumbosacral intervertebral space is located by palpating the wings of
the ilium and identifying the prominent dorsal spinous process of L7 just cranial to
Page 4 of 74
Examination in Anesthesia & Analgesia
Practice Questions with Correct Answers
and Rationales
Question 1
Give the 5-letter acronym (initials) of the association that certifies veterinary
technician specialists in clinical practice.
Correct Answer
AVTCP- Academy of veterinary technicians in clinical practice
Question 2
No more than one-half (20 hours) of the required 40 hours of CE for the VTS (Surgery)
exam can be acquired online.
True
False
Correct Answer
true
Question 3
work experience for ECC
Correct Answer
6,000 hours (3 years)
Page 1 of 74
,Question 4
How many continuing education hours related to anesthesia must be acquired to
qualify for the VTS (Anesthesia) exam?
6
10
20
40
Correct Answer
40
Question 1: Which of the following best describes the primary mechanism by which
inhalant anesthetics such as isoflurane produce general anesthesia in veterinary
patients?
A. Competitive antagonism at NMDA receptors
B. Potentiation of GABA-A receptor activity leading to increased chloride influx
C. Inhibition of voltage-gated sodium channels exclusively
D. Direct blockade of peripheral nociceptors
CORRECT ANSWER: B. Potentiation of GABA-A receptor activity leading to increased
chloride influx
Rationale: Inhalant anesthetics primarily enhance inhibitory neurotransmission via
GABA-A receptors, increasing chloride conductance and hyperpolarizing neurons.
This central nervous system depression produces the anesthetic state. NMDA
antagonism is more characteristic of dissociative agents, while sodium channel
blockade is the mechanism of local anesthetics.
Question 2: In a canine patient undergoing ovariohysterectomy under general
anesthesia, which monitoring parameter most reliably indicates adequate tissue
perfusion?
A. Capillary refill time alone
B. Mean arterial blood pressure combined with mucous membrane color
C. Heart rate variability
D. End-tidal carbon dioxide concentration
CORRECT ANSWER: B. Mean arterial blood pressure combined with mucous
membrane color
Page 2 of 74
,Rationale: Mean arterial pressure provides a quantitative assessment of driving
pressure for organ perfusion, while mucous membrane color and capillary refill offer
qualitative indicators of peripheral perfusion. Heart rate variability is nonspecific,
and end-tidal CO2 primarily reflects ventilation and cardiac output indirectly rather
than direct tissue perfusion.
Question 3: Which injectable anesthetic agent is most appropriate for induction in a
cat with hypertrophic cardiomyopathy due to its relative cardiovascular stability and
minimal myocardial depression?
A. Propofol
B. Alfaxalone
C. Ketamine
D. Thiopental
CORRECT ANSWER: B. Alfaxalone
Rationale: Alfaxalone provides smooth induction with less cardiovascular depression
than propofol or thiopental and avoids the sympathetic stimulation and potential
increased myocardial oxygen demand associated with ketamine, making it
preferable in patients with hypertrophic cardiomyopathy.
Question 4: During maintenance of anesthesia with sevoflurane in a dog, the
anesthetist observes progressive hypercapnia despite an increased respiratory rate.
What is the most likely underlying cause?
A. Increased dead space ventilation
B. Hypermetabolic state
C. Equipment malfunction causing rebreathing
D. Excessive depth of anesthesia depressing ventilatory drive
CORRECT ANSWER: D. Excessive depth of anesthesia depressing ventilatory drive
Rationale: Deep planes of inhalant anesthesia dose-dependently depress the
respiratory centers, reducing alveolar ventilation and elevating PaCO2 even if
respiratory rate appears increased due to shallow tidal volumes. Rebreathing or
dead space issues would typically present with different capnograph patterns.
Question 5: Which local anesthetic has the longest duration of action when used for a
femoral-sciatic nerve block in a canine patient?
A. Lidocaine
B. Mepivacaine
C. Bupivacaine
D. Procaine
CORRECT ANSWER: C. Bupivacaine
Page 3 of 74
, Rationale: Bupivacaine is a long-acting amide local anesthetic with high protein
binding and lipid solubility, providing 4–8 hours of sensory blockade. Lidocaine and
mepivacaine are intermediate-acting, while procaine is short-acting and rarely used
in modern veterinary practice.
Question 6: In calculating oxygen flow rates for a non-rebreathing circuit in a 4 kg
feline patient, what is the recommended minimum fresh gas flow to prevent
rebreathing?
A. 50 mL/kg/min
B. 100–150 mL/kg/min
C. 200–300 mL/kg/min
D. 500 mL/kg/min
CORRECT ANSWER: C. 200–300 mL/kg/min
Rationale: Non-rebreathing systems require high fresh gas flows (typically 200–300
mL/kg/min) to flush exhaled gases and prevent rebreathing of CO2. Lower flows are
appropriate only for rebreathing (circle) systems with functional CO2 absorbents.
Question 7: Which of the following is the most sensitive early indicator of malignant
hyperthermia in a susceptible swine patient under inhalant anesthesia?
A. Elevated body temperature
B. Increased end-tidal CO2
C. Muscle rigidity
D. Tachycardia
CORRECT ANSWER: B. Increased end-tidal CO2
Rationale: An unexplained rise in end-tidal CO2 is the earliest and most sensitive
clinical sign of malignant hyperthermia due to dramatically increased CO2
production from uncontrolled muscle metabolism, often preceding temperature
elevation, rigidity, or cardiovascular changes.
Question 8: When performing an epidural injection in a dog at the lumbosacral space,
which anatomical landmark is used to identify the correct site?
A. Wings of the ilium and the dorsal spinous process of L7
B. Greater trochanter and ischial tuberosity
C. Cranial border of the sacrum and the last lumbar vertebra
D. Iliac crests and the first caudal vertebra
CORRECT ANSWER: A. Wings of the ilium and the dorsal spinous process of L7
Rationale: The lumbosacral intervertebral space is located by palpating the wings of
the ilium and identifying the prominent dorsal spinous process of L7 just cranial to
Page 4 of 74
