VTNE Emergency & Critical Care Practice Questions 2026 — D8 (9% of Exam)
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title: "VTNE Emergency & Critical Care Practice Questions 2026 — D8 (9% of Exam)"
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Introduction
VTNE emergency questions come from Domain 8 (D8), which covers Emergency & Critical Care — a domain worth 9% of the total exam, equating to approximately 13–14 scored questions. Because these questions address life-threatening clinical scenarios, they tend to be high-stakes and are among the most memorable content on the exam. Veterinary technician students who invest extra study time in D8 routinely report a meaningful boost to their overall scaled score. Two topic areas are especially reliable: CPR protocol based on the RECOVER 2012 guidelines, and toxicology (specific toxins with their paired antidotes). Mastering these two areas alone can secure several correct answers on exam day.
What the VTNE Tests in D8 Emergency & Critical Care
D8 questions span the full scope of emergency and critical care practice. The major content areas tested include:
Triage categories: Immediate/Critical (life-threatening, must act now); Delayed/Serious (stable for short wait); Minimal/Minor (ambulatory, non-urgent); Expectant (survival unlikely even with maximum care).
Shock types: Hypovolemic — caused by hemorrhage or severe dehydration (low preload); Distributive/Septic — vasodilation reduces systemic vascular resistance (bounding pulse, brick-red MMs early); Cardiogenic — pump failure, reduced cardiac output (jugular distension, pulmonary edema); Obstructive — GDV or pericardial tamponade blocks outflow.
RECOVER 2012 CPR guidelines: Compression rate 100–120/min; depth 1/3–1/2 thoracic width; 1 rescuer: 30 compressions : 2 ventilations; 2 rescuers: continuous compressions + 10 breaths/min (1 breath every 6 seconds); switch compressors every 2 minutes to prevent fatigue.
CPR drugs: Epinephrine 0.01 mg/kg IV every 3–5 min; Atropine 0.04 mg/kg IV (vagally-mediated bradycardia only, not routine CPR); Vasopressin 0.8 U/kg IV (alternative to epinephrine).
Toxicology — toxin/antidote pairs: Xylitol → IV dextrose + liver support; Grapes/raisins → decontamination + IV fluids + renal monitoring; Acetaminophen (cats) → N-acetylcysteine + Vitamin C; Organophosphates → Atropine + Pralidoxime (2-PAM); Anticoagulant rodenticides → Vitamin K1 (4–6 weeks); Ethylene glycol → Fomepizole (dogs within 3–4 hr); ethanol IV (cats); Permethrin (cats, from dog flea products) → bath + methocarbamol for seizures.
Fluid resuscitation: Crystalloid bolus dog 20–30 mL/kg over 15–30 min; cat 10–15 mL/kg over 15–30 min. Reassess perfusion parameters (HR, pulse quality, MM colour, CRT, BP) after each bolus before giving more.
Common emergencies: GDV — unproductive retching + distension = surgical emergency; do NOT induce vomiting; immediate IV access and fluid resuscitation; Urethral obstruction in male cats — firm distended bladder + straining = fatal hyperkalemia within 24–48 hr if untreated; Dystocia — >2 hr active straining with no delivery = veterinary emergency; Respiratory distress — open-mouth breathing in cats always abnormal.
Oxygen therapy methods: Flow-by (mask held near face); nasal cannula; oxygen cage (least stressful for dyspnoeic patients).
High-Yield Emergency Topics
Based on VTNE content outlines and candidate reports, these eight topics deliver the highest return on study time for D8:
1. RECOVER CPR compression rate — 100–120/min — identical to human ACLS guidelines. This specific number is directly tested.
2. Shock recognition and types — Know the classic clinical signs for each of the four shock types, especially early distributive (septic) shock with bounding pulse and brick-red mucous membranes versus hypovolemic shock with pale MMs and weak pulse.
3. Xylitol toxicity — Affects dogs ONLY; causes profound hypoglycemia and acute hepatic necrosis; can be fatal within hours. Early treatment (emesis if recent, IV dextrose monitoring) is critical.
4. Ethylene glycol timing — Dogs must receive fomepizole within 3–4 hours; cats within 1 hour. Delay results in irreversible oxalate nephropathy and acute renal failure.
5. Triage categories — Know all four categories with at least two clinical examples each. The VTNE presents triage scenarios and asks which category applies.
6. Fluid bolus volumes — Dog 20–30 mL/kg; cat 10–15 mL/kg. Reassess after each bolus — do not give the full 'shock dose' without monitoring response.
7. Epinephrine dosing — 0.01 mg/kg IV every 3–5 min during CPR. The exact milligram-per-kilogram dose is directly tested.
8. GDV management — Immediate IV access for aggressive fluid resuscitation; surgical decompression and gastropexy. NEVER induce vomiting. Delay leads to gastric necrosis.
Memory Aid — Secondary Survey: "A CRASH PLAN" — Airway, Cardiovascular, Respiratory, Abdomen, Spine, Head, Pelvis, Limbs, Arteries, Nerves
10 Free VTNE Emergency Practice Questions
Each question below is written in the same five-option format as the real VTNE. Read each question carefully, choose your answer, then review the explanation.
Q1: A dog is found unresponsive and not breathing. During CPR, what is the target compression rate?
A) 60–80 compressions/min
B) 80–100 compressions/min
C) 100–120 compressions/min
D) 120–140 compressions/min
E) 150–180 compressions/min
Answer: C — 100–120 compressions/min
Explanation: Per the RECOVER 2012 guidelines, chest compressions should be performed at 100–120/min for both dogs and cats. This rate optimises cardiac output during CPR. Compressions should depress the chest approximately 1/3–1/2 of the thoracic width, with full chest recoil between compressions to allow venous refill.
Q2: A cat presents with marked salivation, tremors, and seizures after flea treatment application. The owner reports using a dog flea product. What is the MOST likely toxin?
A) Fipronil
B) Imidacloprid
C) Permethrin
D) Selamectin
E) Spinosad
Answer: C — Permethrin
Explanation: Permethrin is a pyrethroid insecticide found in many dog flea products and is highly toxic to cats. Cats lack adequate hepatic glucuronidation enzymes to metabolise permethrin efficiently. Signs include tremors, fasciculations, hyperthermia, seizures, and death if untreated. Treatment: thoroughly bathe with dish soap to remove residue; IV methocarbamol (muscle relaxant) for tremors and seizures; supportive care.
Q3: A dog ingested xylitol-containing gum 30 minutes ago. Which combination of treatments is MOST appropriate immediately?
A) Activated charcoal + atropine
B) Emesis induction (if no contraindications) + IV dextrose monitoring + liver enzyme monitoring
C) Vitamin K1 injection + FFP transfusion
D) N-acetylcysteine + ascorbic acid
E) Fomepizole IV + fluid diuresis
Answer: B — Emesis + IV dextrose monitoring + liver enzyme monitoring
Explanation: Xylitol causes rapid, profound hypoglycaemia and acute hepatic necrosis in dogs. If the ingestion was recent (<2 hours) and the patient is asymptomatic, induce emesis. Monitor blood glucose every 2 hours for at least 12 hours and begin IV dextrose supplementation if glucose drops. Check liver enzymes at 24–48 hours post-ingestion. Cats are much less sensitive to xylitol than dogs.
Q4: A dog presents in hypovolemic shock with pale mucous membranes, weak pulse, and tachycardia (HR 168 bpm). What is the MOST appropriate initial fluid resuscitation plan?
A) 5 mL/kg crystalloid bolus slowly over 4 hours
B) 20–30 mL/kg crystalloid bolus IV over 15–30 minutes, then reassess
C) 60 mL/kg crystalloid immediately without reassessment
D) Colloid-only resuscitation with Hetastarch 40 mL/kg
E) No fluids until blood pressure is measured
Answer: B — 20–30 mL/kg crystalloid bolus IV over 15–30 minutes, then reassess
Explanation: Hypovolemic shock is treated with a rapid crystalloid bolus of 20–30 mL/kg IV over 15–30 minutes in dogs. After each bolus, reassess perfusion parameters: heart rate, pulse quality, mucous membrane colour, capillary refill time, and blood pressure. Give additional boluses based on patient response. Administering the full 'shock dose' (90 mL/kg) without reassessment risks volume overload and pulmonary oedema.
Q5: During CPR with two rescuers, what is the correct compression-to-ventilation ratio?
A) 30:2 compressions to ventilations
B) 15:2 compressions to ventilations
C) Continuous compressions with 10 breaths per minute
D) Alternate compressions and ventilations every 5 seconds
E) 5:1 compressions to ventilations
Answer: C — Continuous compressions with 10 breaths per minute (1 breath every 6 seconds)
Explanation: With two rescuers — one dedicated compressor and one airway manager — RECOVER recommends continuous chest compressions at 100–120/min with asynchronous ventilations at 10 breaths/min (one breath every 6 seconds). This avoids interruptions in compressions. The 30:2 ratio is reserved for single-rescuer CPR when the same person must handle both tasks.
Q6: A client calls to report their dog ate rat poison yesterday and is now bleeding from the gums. What rodenticide is MOST likely involved, and what is the correct treatment?
A) Zinc phosphide; chelation therapy with DMSA
B) Bromethalin (neurotoxic); no antidote, supportive care only
C) Anticoagulant rodenticide (brodifacoum); Vitamin K1 for 4–6 weeks
D) Cholecalciferol (vitamin D3); furosemide + IV fluids
E) Strychnine; diazepam for seizures
Answer: C — Anticoagulant rodenticide (brodifacoum); Vitamin K1 for 4–6 weeks
Explanation: Anticoagulant rodenticides (brodifacoum, bromadiolone, diphacinone) inhibit Vitamin K epoxide reductase, preventing regeneration of clotting factors II, VII, IX, and X. Clinical bleeding signs typically appear 3–5 days post-ingestion. Treatment: Vitamin K1 (phytonadione) for 4–6 weeks; fresh frozen plasma or whole blood for acute haemorrhage. Recheck PT/aPTT 48–72 hours after completing Vitamin K1 to confirm resolution before discontinuing treatment.
Q7: Which clinical signs are MOST consistent with urethral obstruction in a male cat?
A) Haematochezia and tenesmus
B) Unproductive retching and acute abdominal distension
C) Straining to urinate with vocalization and a firm, distended bladder on palpation
D) Progressive hindlimb weakness and incoordination after tick exposure
E) Epistaxis and prolonged gingival bleeding
Answer: C — Straining to urinate with vocalization and a firm, distended bladder
Explanation: Urethral obstruction in male cats (caused by uroliths, mucus plugs, or urethral spasm) presents with straining to urinate that produces no urine, vocalization from pain, restlessness, and a firm distended bladder palpable cranioventrally in the abdomen. This is a life-threatening emergency — urethral obstruction causes fatal hyperkalaemia-induced cardiac arrhythmias within 24–48 hours if untreated. Post-renal azotaemia and metabolic acidosis develop rapidly.
Q8: A dog is triaged following a road traffic accident. The patient is conscious, ambulatory on three legs, and has a suspected closed femur fracture. What triage category applies?
A) Immediate
B) Delayed
C) Minimal
D) Expectant
E) Critical
Answer: B — Delayed
Explanation: A conscious, ambulatory patient with a closed fracture is a 'Delayed' triage patient — the injury is serious but not immediately life-threatening and can wait a short time for care. 'Immediate' applies to patients in cardiac arrest, respiratory failure, or with severe uncontrolled haemorrhage. 'Minimal' applies to minor wounds requiring no urgent intervention. 'Expectant' applies to patients unlikely to survive even with maximum resources.
Q9: A dog is diagnosed with septic shock. What is the MOST classic early clinical finding that distinguishes distributive (septic) shock from hypovolemic shock?
A) Pale, cold mucous membranes and a weak, thready pulse
B) Brick-red/injected mucous membranes with a bounding pulse (hyperdynamic phase)
C) Complete absence of femoral pulse with anuria
D) Severe bradycardia and hypothermia
E) Normal mucous membranes with mild tachycardia
Answer: B — Brick-red/injected mucous membranes with a bounding pulse (hyperdynamic phase)
Explanation: In early (hyperdynamic) septic shock, systemic vasodilation produces hallmark signs: brick-red or injected mucous membranes, capillary refill time <1 second, bounding peripheral pulse, and tachycardia. These differ markedly from hypovolemic shock, where vasoconstriction causes pale/white mucous membranes, prolonged CRT, and weak pulse. As septic shock progresses to the decompensatory (cold) phase, signs converge toward the hypovolemic picture and the prognosis worsens significantly.
Q10: Approximately how long after ethylene glycol ingestion does a dog have to receive fomepizole treatment before irreversible renal damage occurs?
A) 30 minutes
B) 1 hour
C) 3–4 hours
D) 12–24 hours
E) 48–72 hours
Answer: C — 3–4 hours
Explanation: Ethylene glycol (antifreeze) is itself relatively non-toxic, but its metabolites — particularly glycolate and calcium oxalate — cause acute tubular necrosis and irreversible renal failure. Dogs must be treated with fomepizole (4-methylpyrazole / 4-MP) within approximately 3–4 hours of ingestion before these toxic metabolites accumulate. Cats metabolise ethylene glycol faster and have only a 1-hour treatment window. Fomepizole competitively inhibits alcohol dehydrogenase, preventing formation of the toxic metabolites.
Study Tips for D8 Emergency & Critical Care
1. Memorise the toxin/antidote table — Xylitol → IV dextrose; Anticoagulant rodenticide → Vitamin K1 (4–6 weeks); Ethylene glycol → Fomepizole (dogs 3–4 hr window); Organophosphate → Atropine + 2-PAM; Permethrin in cats → bath + methocarbamol.
2. Know RECOVER CPR numbers cold — 100–120/min compressions; 1/3–1/2 chest depth; switch compressors every 2 minutes; epinephrine 0.01 mg/kg IV every 3–5 min; 2-rescuer CPR = continuous compressions + 10 breaths/min.
3. Learn the critical time windows — Ethylene glycol: dog 3–4 hours, cat 1 hour; GDV needs surgical decompression within hours to prevent gastric necrosis; Urethral obstruction is fatal within 24–48 hours without relief — always a same-day emergency.
Frequently Asked Questions
How many emergency questions are on the VTNE?
D8 Emergency & Critical Care is 9% of the VTNE, equating to approximately 13–14 scored questions out of the total scored item pool. Every correct answer in D8 has an outsized positive effect on your scaled score because the domain is heavily scenario-based.
What emergency topics are most commonly tested on the VTNE?
CPR protocol (RECOVER guidelines — compression rate, compression depth, drug doses), toxicology (xylitol, grapes/raisins, anticoagulant rodenticides, ethylene glycol), shock recognition and fluid resuscitation volumes, and triage category assignment are the highest-yield topics in D8.
Do I need to memorize all drug doses for emergency questions?
Yes — the three most frequently tested emergency doses are epinephrine 0.01 mg/kg IV (q3–5 min during CPR), atropine 0.04 mg/kg IV (vagally-mediated bradycardia only), and crystalloid fluid bolus volumes (dog 20–30 mL/kg; cat 10–15 mL/kg). These exact numbers appear as answer choices and in explanatory VTNE-style distractors.
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