VTNE Exam V3 | Veterinary Technician
National Examination (VTNE) | Q&A with
Rationale (VTNE Exam) | American
Association of Veterinary State Boards
(AAVSB)
1. Which of the following drugs is a pure opioid agonist used for moderate to severe pain in
veterinary patients?
A. Butorphanol
B. Buprenorphine
C. Morphine
D. Naloxone
Correct Answer: C
Rationale: Morphine is a pure mu-agonist opioid that provides significant analgesia for
severe pain. Butorphanol is a mixed agonist-antagonist, and buprenorphine is a partial mu-
agonist, both of which have a ceiling effect. Naloxone is an antagonist used to reverse the
effects of opioids.
2. A 10 kg dog requires a 2 mg/kg dose of a drug with a concentration of 5 mg/mL. What
volume should be administered?
A. 10 mL
,B. 4 mL
C. 20 mL
D. 2.5 mL
Correct Answer: B
Rationale: To find the volume, first calculate the total dose in mg by multiplying 10 kg by 2
mg/kg, which equals 20 mg. Then, divide the total dose (20 mg) by the concentration (5
mg/mL) to get 4 mL. Accurate dosage calculation is critical for patient safety and
therapeutic efficacy in veterinary nursing.
3. In radiography, which of the following settings most directly controls the quantity of x-rays
produced during an exposure?
A. kVp
B. mAs
C. FFD
D. Grid ratio
Correct Answer: B
Rationale: The mAs (milliampere-seconds) setting determines the number of electrons
released at the filament, which directly affects the quantity of x-rays. kVp primarily
controls the energy and penetrating power of the x-ray beam. Adjusting mAs is the primary
method for managing radiographic density on the final film.
, 4. What is the primary function of an ultrasonic scaler in veterinary dentistry?
A. Polishing the enamel surface
B. Removing large deposits of supragingival calculus
C. Removing subgingival calculus only
D. Extracting mobile teeth
Correct Answer: B
Rationale: Ultrasonic scalers use high-frequency vibrations to break up and remove heavy
supragingival calculus deposits. They should be used with caution subgingivally to avoid
thermal damage to the soft tissues. Polishing is a separate step used to smooth the
microscopic scratches left by the scaler.
5. Which crystal is commonly found in the urine of animals with ethylene glycol toxicity?
A. Struvite
B. Cystine
C. Ammonium biurate
D. Calcium oxalate monohydrate
Correct Answer: D
Rationale: Calcium oxalate monohydrate crystals, often appearing as ‘picket fence’ shapes,
are a hallmark finding in ethylene glycol poisoning. These crystals form as the liver
National Examination (VTNE) | Q&A with
Rationale (VTNE Exam) | American
Association of Veterinary State Boards
(AAVSB)
1. Which of the following drugs is a pure opioid agonist used for moderate to severe pain in
veterinary patients?
A. Butorphanol
B. Buprenorphine
C. Morphine
D. Naloxone
Correct Answer: C
Rationale: Morphine is a pure mu-agonist opioid that provides significant analgesia for
severe pain. Butorphanol is a mixed agonist-antagonist, and buprenorphine is a partial mu-
agonist, both of which have a ceiling effect. Naloxone is an antagonist used to reverse the
effects of opioids.
2. A 10 kg dog requires a 2 mg/kg dose of a drug with a concentration of 5 mg/mL. What
volume should be administered?
A. 10 mL
,B. 4 mL
C. 20 mL
D. 2.5 mL
Correct Answer: B
Rationale: To find the volume, first calculate the total dose in mg by multiplying 10 kg by 2
mg/kg, which equals 20 mg. Then, divide the total dose (20 mg) by the concentration (5
mg/mL) to get 4 mL. Accurate dosage calculation is critical for patient safety and
therapeutic efficacy in veterinary nursing.
3. In radiography, which of the following settings most directly controls the quantity of x-rays
produced during an exposure?
A. kVp
B. mAs
C. FFD
D. Grid ratio
Correct Answer: B
Rationale: The mAs (milliampere-seconds) setting determines the number of electrons
released at the filament, which directly affects the quantity of x-rays. kVp primarily
controls the energy and penetrating power of the x-ray beam. Adjusting mAs is the primary
method for managing radiographic density on the final film.
, 4. What is the primary function of an ultrasonic scaler in veterinary dentistry?
A. Polishing the enamel surface
B. Removing large deposits of supragingival calculus
C. Removing subgingival calculus only
D. Extracting mobile teeth
Correct Answer: B
Rationale: Ultrasonic scalers use high-frequency vibrations to break up and remove heavy
supragingival calculus deposits. They should be used with caution subgingivally to avoid
thermal damage to the soft tissues. Polishing is a separate step used to smooth the
microscopic scratches left by the scaler.
5. Which crystal is commonly found in the urine of animals with ethylene glycol toxicity?
A. Struvite
B. Cystine
C. Ammonium biurate
D. Calcium oxalate monohydrate
Correct Answer: D
Rationale: Calcium oxalate monohydrate crystals, often appearing as ‘picket fence’ shapes,
are a hallmark finding in ethylene glycol poisoning. These crystals form as the liver
