VTNE Exam V1 | Veterinary Technician
National Examination (VTNE) | Q&A with
Rationale (VTNE Exam) | American
Association of Veterinary State Boards
(AAVSB)
1. A patient exhibits a heart rate of 45 beats per minute during a surgical procedure under
general anesthesia. Which class of drug is most appropriate to treat this bradycardia?
A. Dissociative
B. Beta-blocker
C. Anticholinergic
D. Alpha-2 agonist
Correct Answer: C
Rationale: Anticholinergics like atropine or glycopyrrolate are used to increase heart rate
by blocking the vagus nerve’s inhibitory effects. This is a common intervention in
anesthetic management when bradycardia occurs. Identifying the underlying cause is
important, but these drugs provide a rapid pharmacological response.
2. When performing a blood smear, which cell type is typically the most numerous leukocyte
found in a healthy canine sample?
A. Neutrophil
,B. Eosinophil
C. Monocyte
D. Lymphocyte
Correct Answer: A
Rationale: Neutrophils are the primary white blood cells seen in the peripheral blood of
dogs and cats. They play a critical role in the innate immune response and acute
inflammation. A shift in their numbers can indicate infection or stress.
3. In a radiographic image, which of the following tissues will appear the most radiopaque?
A. Fat
B. Bone
C. Air
D. Muscle
Correct Answer: B
Rationale: Radiopacity refers to the ability of a substance to stop X-rays from reaching the
film, resulting in a whiter appearance. Bone has a high atomic number and density, making
it very radiopaque. Air, conversely, is radiolucent and appears black.
4. Which dental formula correctly represents the permanent teeth of an adult cat?
A. 2 (I 3/3, C 1/1, P 3/2, M 1/1) = 30
B. 2 (I 3/3, C 1/1, P 4/4, M 2/3) = 42
, C. 2 (I 3/3, C 1/1, P 3/3, M 1/1) = 32
D. 2 (I 2/2, C 1/1, P 2/2, M 1/1) = 26
Correct Answer: A
Rationale: The adult feline dental formula consists of 30 teeth in total, characterized by
fewer premolars in the mandible. Proper identification of missing or extra teeth is essential
during a dental prophylaxis. This knowledge helps technicians accurately record findings in
the dental chart.
5. What is the primary site of action for the loop diuretic Furosemide?
A. Distal convoluted tubule
B. Collecting duct
C. Ascending limb of the Loop of Henle
D. Proximal convoluted tubule
Correct Answer: C
Rationale: Furosemide inhibits the reabsorption of sodium and chloride in the thick
ascending limb of the loop of Henle. This leads to increased excretion of water and
electrolytes, reducing fluid overload. It is a cornerstone treatment for congestive heart
failure in veterinary medicine.
National Examination (VTNE) | Q&A with
Rationale (VTNE Exam) | American
Association of Veterinary State Boards
(AAVSB)
1. A patient exhibits a heart rate of 45 beats per minute during a surgical procedure under
general anesthesia. Which class of drug is most appropriate to treat this bradycardia?
A. Dissociative
B. Beta-blocker
C. Anticholinergic
D. Alpha-2 agonist
Correct Answer: C
Rationale: Anticholinergics like atropine or glycopyrrolate are used to increase heart rate
by blocking the vagus nerve’s inhibitory effects. This is a common intervention in
anesthetic management when bradycardia occurs. Identifying the underlying cause is
important, but these drugs provide a rapid pharmacological response.
2. When performing a blood smear, which cell type is typically the most numerous leukocyte
found in a healthy canine sample?
A. Neutrophil
,B. Eosinophil
C. Monocyte
D. Lymphocyte
Correct Answer: A
Rationale: Neutrophils are the primary white blood cells seen in the peripheral blood of
dogs and cats. They play a critical role in the innate immune response and acute
inflammation. A shift in their numbers can indicate infection or stress.
3. In a radiographic image, which of the following tissues will appear the most radiopaque?
A. Fat
B. Bone
C. Air
D. Muscle
Correct Answer: B
Rationale: Radiopacity refers to the ability of a substance to stop X-rays from reaching the
film, resulting in a whiter appearance. Bone has a high atomic number and density, making
it very radiopaque. Air, conversely, is radiolucent and appears black.
4. Which dental formula correctly represents the permanent teeth of an adult cat?
A. 2 (I 3/3, C 1/1, P 3/2, M 1/1) = 30
B. 2 (I 3/3, C 1/1, P 4/4, M 2/3) = 42
, C. 2 (I 3/3, C 1/1, P 3/3, M 1/1) = 32
D. 2 (I 2/2, C 1/1, P 2/2, M 1/1) = 26
Correct Answer: A
Rationale: The adult feline dental formula consists of 30 teeth in total, characterized by
fewer premolars in the mandible. Proper identification of missing or extra teeth is essential
during a dental prophylaxis. This knowledge helps technicians accurately record findings in
the dental chart.
5. What is the primary site of action for the loop diuretic Furosemide?
A. Distal convoluted tubule
B. Collecting duct
C. Ascending limb of the Loop of Henle
D. Proximal convoluted tubule
Correct Answer: C
Rationale: Furosemide inhibits the reabsorption of sodium and chloride in the thick
ascending limb of the loop of Henle. This leads to increased excretion of water and
electrolytes, reducing fluid overload. It is a cornerstone treatment for congestive heart
failure in veterinary medicine.
