VTNE Anesthesia Practice Questions 2026 - 20 Free Q&As with Explanations
Master VTNE anesthesia with 20 free scenario-based practice questions on monitoring, stages of anesthesia, MAC values, intubation, and reversal agents, each with a clear explanation.
Anesthesia accounts for roughly 13% of the VTNE (about 20 questions) and tests your ability to monitor a patient safely from induction through recovery. You will see questions on the stages and planes of anesthesia, monitoring parameters, MAC values, intubation, and the correct reversal agents. These 20 free scenario-based questions with explanations build the clinical judgment the exam expects.
Domain Quick Facts
- Exam weight: 13% of VTNE (~20 questions)
- Key topics: stages and planes of anesthesia, monitoring parameters, MAC values, intubation, anesthetic machine components, reversal agents, induction agents, hypotension and hypothermia
- Difficulty: Hard - requires applying monitoring data to make decisions
- Study tip: Learn the normal ranges for each monitoring parameter and what an abnormal value means.
20 Free VTNE Anesthesia Practice Questions
Each question below mirrors the real VTNE format: four-option multiple choice with a detailed explanation. Work through them in order, then check your answers.
Question 1 of 20 - Monitoring
During anesthesia, the capnograph shows an end-tidal CO2 of 65 mmHg. What does this most likely indicate?
Correct Answer: B) Hypoventilation
Normal end-tidal CO2 is roughly 35 to 45 mmHg, so a value of 65 indicates retained CO2 from hypoventilation. Hyperventilation lowers the value, esophageal intubation produces little or no waveform, and 65 is well above normal.
Question 2 of 20 - Reversal Agents
A patient premedicated with medetomidine needs reversal at the end of a procedure. Which agent is appropriate?
Correct Answer: C) Atipamezole
Atipamezole reverses alpha-2 agonists such as medetomidine and dexmedetomidine. Flumazenil reverses benzodiazepines, naloxone reverses opioids, and doxapram is a respiratory stimulant, not a reversal agent.
Question 3 of 20 - Stages of Anesthesia
A patient shows the excitement phase with involuntary movement and possible breath-holding shortly after induction. Which stage is this?
Correct Answer: B) Stage II
Stage II is the excitement phase characterized by struggling, breath-holding, and exaggerated reflexes. Stage I is voluntary movement before unconsciousness, Stage III is surgical anesthesia, and Stage IV is overdose.
Question 4 of 20 - Stages of Anesthesia
Which stage represents the surgical plane where most procedures are performed?
Correct Answer: C) Stage III
Stage III is surgical anesthesia, and plane 2 of this stage is the target for most surgeries. Stage I and II precede surgical depth, and Stage IV is a dangerous overdose.
Question 5 of 20 - MAC
A technician compares inhalant agents. Which statement about minimum alveolar concentration is correct?
Correct Answer: B) A lower MAC indicates a more potent agent
MAC is the concentration preventing movement in 50 percent of patients, so a lower MAC means less drug is needed and the agent is more potent. Isoflurane MAC in dogs is about 1.3% versus sevoflurane near 2.4%. MAC applies to inhalant, not injectable, agents.
Question 6 of 20 - Intubation
After placing an endotracheal tube, you suspect esophageal placement. Which finding best confirms it?
Correct Answer: B) Absence of a CO2 waveform on the capnograph
If the tube is in the esophagus, exhaled CO2 will be absent or near zero, so a flat capnograph confirms misplacement. A strong waveform, tube fogging, and chest rise all suggest correct tracheal placement.
Question 7 of 20 - Anesthetic Machine
A 2 kg kitten is being anesthetized. Why is a non-rebreathing circuit typically preferred for very small patients?
Correct Answer: A) It has lower resistance to breathing
Non-rebreathing circuits have minimal resistance, important for patients under about 7 kg that cannot easily move gas through valves and an absorber. They require higher oxygen flow, do not conserve heat, and all circuits need oxygen.
Question 8 of 20 - Hypotension
A dog under inhalant anesthesia has a mean arterial pressure of 55 mmHg. What is the most likely cause to address first?
Correct Answer: B) Excessive anesthetic depth causing vasodilation
A mean arterial pressure below 60 mmHg indicates hypotension, and inhalant agents commonly cause dose-dependent vasodilation, so reducing depth is the first step. Light anesthesia tends to raise blood pressure, and hyperthermia and over-oxygenation are not typical causes.
Question 9 of 20 - Induction Agents
Which injectable induction agent has rapid onset and recovery and must be given slowly to avoid apnea?
Correct Answer: A) Propofol
Propofol provides rapid, smooth induction and quick recovery but causes apnea if given too fast. Acepromazine is a tranquilizer, and atropine and glycopyrrolate are anticholinergics.
Question 10 of 20 - Malignant Hyperthermia
A patient develops rapidly rising temperature, muscle rigidity, and high end-tidal CO2. Which drug treats suspected malignant hyperthermia?
Correct Answer: A) Dantrolene
Dantrolene is a skeletal muscle relaxant that treats malignant hyperthermia by reducing calcium release in muscle. The other drugs are reversal agents for alpha-2 agonists, benzodiazepines, and opioids.
Question 11 of 20 - Monitoring
A pulse oximeter reads an SpO2 of 88% on an anesthetized dog. What does this indicate?
Correct Answer: B) Hypoxemia requiring intervention
SpO2 should be 95% or higher, so 88% indicates hypoxemia requiring immediate troubleshooting and oxygen support. SpO2 measures oxygen saturation, not CO2, so hypercapnia is not assessed by this device.
Question 12 of 20 - Hypothermia
An anesthetized cat develops a temperature of 96°F during a long procedure. Which intervention is most appropriate?
Correct Answer: A) Apply active warming such as a forced-air warming blanket
96°F is hypothermic and requires active warming with safe heat sources to prevent prolonged recovery. Increasing the vaporizer deepens anesthesia, a cold surface worsens hypothermia, and reducing oxygen to zero is dangerous.
Question 13 of 20 - Induction Agents
Ketamine and diazepam are drawn up for induction. Why is the benzodiazepine combined with ketamine?
Correct Answer: B) To counteract ketamine-induced muscle rigidity and seizures
Ketamine alone causes muscle rigidity and can lower the seizure threshold, so diazepam adds muscle relaxation and seizure control. The combination does not increase salivation, eliminate airway needs, or reduce recovery to seconds.
Question 14 of 20 - Monitoring
Which reflex helps assess anesthetic depth, becoming progressively obtunded as depth increases?
Correct Answer: A) Palpebral reflex
The palpebral reflex, a blink in response to touching the medial canthus, diminishes as anesthetic depth increases and is a routine monitoring tool. The patellar reflex is not used for plane assessment, and the cough and gag reflexes are tested mainly at intubation and recovery.
Question 15 of 20 - Stages of Anesthesia
A patient suddenly shows dilated unresponsive pupils, no reflexes, and cardiovascular collapse. Which stage is an emergency requiring immediate intervention?
Correct Answer: D) Stage IV
Stage IV is anesthetic overdose with medullary depression, fixed dilated pupils, and cardiovascular and respiratory collapse, requiring immediate reduction of anesthetic and support. Earlier stages lack this degree of life-threatening depression.
Question 16 of 20 - Oxygen Flow
Using a rebreathing circuit on a stable anesthetized dog, which oxygen flow approach is generally appropriate during maintenance?
Correct Answer: B) A lower maintenance flow because exhaled gas is recirculated after CO2 absorption
In a rebreathing system the CO2 absorber removes carbon dioxide so exhaled gas can be reused, allowing lower oxygen flow during maintenance. Flow should never be zero, and oxygen is supplied continuously.
Question 17 of 20 - Reversal Agents
The veterinarian wants to partially reverse an opioid without fully eliminating analgesia. Which approach is best?
Correct Answer: B) Titrate small, diluted doses of naloxone to effect
Diluting naloxone and titrating to effect improves ventilation while preserving some analgesia, whereas a large bolus reverses analgesia completely and may cause pain and dysphoria. Atipamezole and flumazenil reverse other drug classes, not opioids.
Question 18 of 20 - Induction Agents
Which induction agent is a neuroactive steroid with smooth induction, minimal cardiovascular depression, and is common in cats?
Correct Answer: A) Alfaxalone
Alfaxalone is a neuroactive steroid induction agent valued for smooth induction and a favorable cardiovascular profile. Acepromazine is a tranquilizer, butorphanol is an opioid agonist-antagonist, and maropitant is an antiemetic.
Question 19 of 20 - Monitoring
An anesthetized dog has a heart rate of 45 beats per minute. Which parameter is abnormal and should be reported?
Correct Answer: A) Heart rate indicating bradycardia
A heart rate of 45 in an anesthetized dog is bradycardia and should be reported, since normal canine heart rate is roughly 60 to 140. It is not tachycardia or normal, and the value is a heart rate, not a respiratory rate.
Question 20 of 20 - Intubation
Why must endotracheal tube cuff pressure be checked rather than overinflated?
Correct Answer: A) Overinflation can cause tracheal mucosal damage or rupture
Excessive cuff pressure compresses tracheal blood supply and can cause mucosal necrosis or, in cats, tracheal rupture, so inflate only enough to prevent leaks. Overinflation does not speed recovery or improve oxygenation.
How to Score Yourself
- 18-20 correct: Excellent - this domain is a strength
- 14-17 correct: Good - review the questions you missed
- 10-13 correct: Needs work - dedicate extra study time to this domain
- Below 10: Priority domain - start with the study guide below
Key Anesthesia Topics to Master for the VTNE
Monitoring is the heart of anesthesia questions. Memorize the normal ranges and the meaning of abnormal values: end-tidal CO2 should be about 35 to 45 mmHg, SpO2 should be 95% or higher, and mean arterial pressure should stay above 60 mmHg.
The stages of anesthesia are a classic test item. Stage I is voluntary movement, Stage II is the excitement phase, Stage III is surgical anesthesia divided into planes, and Stage IV is a life-threatening overdose. Connect each stage to its clinical signs.
Reversal agents repeat across the pharmacology and anesthesia domains. Atipamezole reverses alpha-2 agonists, flumazenil reverses benzodiazepines, and naloxone reverses opioids. Remember that dantrolene treats malignant hyperthermia, which is not a reversal of a drug class.
Understand the equipment and how it interacts with patient size. Non-rebreathing circuits suit patients under about 7 kg because they have low resistance, while rebreathing circuits use a CO2 absorber and allow lower maintenance oxygen flow. Always confirm tube placement with a capnograph.
VTNE Anesthesia FAQ
How many anesthesia questions are on the VTNE?
Anesthesia makes up about 13% of the VTNE, which is roughly 20 of the 150 scored questions.
What monitoring values should I memorize?
Know that end-tidal CO2 should be 35 to 45 mmHg, SpO2 should be at least 95%, and mean arterial pressure should be above 60 mmHg.
What does MAC tell me about an inhalant?
A lower MAC means the agent is more potent because less of it is needed to prevent movement, as with isoflurane compared to sevoflurane.
How do I confirm correct endotracheal tube placement?
A consistent CO2 waveform on the capnograph confirms tracheal placement, while a flat trace suggests esophageal intubation.
Ready for 5,000+ VTNE Practice Questions?
Track your progress by domain and identify weak areas instantly.
Start Free Trial