VTNE Emergency and Critical Care Study Guide: Triage, Shock, and Life-Saving Procedures
Master VTNE emergency nursing: triage categories, shock types and treatment, CPR step-by-step, oxygen delivery, fluid resuscitation, and top toxicological emergencies.
Emergency and critical care asks the veterinary technician to think fast and act precisely when minutes matter. From triaging a waiting room to running CPR, recognizing shock, and treating poisonings, this domain blends pattern recognition with protocol-driven action. This complete study guide covers triage, the major types of shock, the RECOVER CPR guidelines, oxygen therapy, fluid resuscitation, toxicology, and critical monitoring so you are ready for any emergency scenario on the exam.
Domain Overview
- VTNE weight: ~8% (~12 of 150 scored questions)
- Key subtopics: triage, shock, CPR, oxygen therapy, fluid resuscitation, toxicology, trauma, monitoring
- Difficulty: Hard - requires rapid prioritization and protocol recall
- Most tested concepts: shock recognition, CPR ratios, shock fluid doses, common toxin treatments
- Related resources: Practice Questions | Triage Guide
Emergency and Critical Care on the VTNE
This domain is about 8% of scored questions but carries outsized clinical importance. Questions test your ability to prioritize patients, recognize life-threatening conditions early, and execute critical procedures correctly. The unifying theme is the ABCs - airway, breathing, circulation - and the principle that the most unstable patient is seen first regardless of arrival order.
Triage and Initial Assessment
Triage sorts patients by urgency. The primary survey is a rapid assessment of the major body systems - airway, breathing, circulation, and level of consciousness - to identify immediate threats to life. The secondary survey is a more detailed head-to-tail exam once the patient is stabilized.
Shock: Types, Recognition, and Treatment
Shock is inadequate tissue perfusion and oxygen delivery. Recognizing the type guides treatment.
The classic early signs of hypovolemic shock are pale mucous membranes, prolonged capillary refill time, tachycardia, and weak peripheral pulses. Cats often present differently from dogs, sometimes with bradycardia and hypothermia in decompensated shock.
Cardiopulmonary Arrest and CPR
Veterinary CPR follows the RECOVER guidelines. The technician must know the key numbers:
- Chest compressions at 100 to 120 per minute, compressing one-third to one-half the width of the chest, allowing full recoil.
- A 30:2 ratio of compressions to ventilations if the patient is not yet intubated; once intubated, give continuous compressions with ventilation about 10 breaths per minute.
- Hand position depends on chest shape: over the widest part of the chest for round-chested dogs, or directly over the heart for keel-chested dogs and cats.
- Rotate the compressor every 2 minutes to prevent fatigue, and minimize interruptions.
Emergency drugs include epinephrine (for asystole/PEA), vasopressin (an alternative pressor), and atropine (for bradycardia/vagally mediated arrest). Capnography (EtCO2) is a valuable indicator of CPR effectiveness and of return of spontaneous circulation.
VTNE Study Tip
Commit the core RECOVER numbers to memory: 100 to 120 compressions per minute, a 30:2 ratio before intubation, and compress one-third to one-half the chest width. These exact figures appear on the exam and are easy points if you have rehearsed them, but easy to confuse with human CPR numbers if you have not.
Oxygen Therapy
Oxygen supplementation supports hypoxemic patients, scaled to need and tolerance:
- Flow-by: oxygen tubing held near the nose; least stressful, lowest delivered concentration.
- Face mask: higher concentration but may stress some patients.
- Oxygen hood/cage: enriched environment for patients that do not tolerate handling.
- Nasal cannula: delivers oxygen directly into the nasal passage for sustained therapy.
- Mechanical ventilation: for patients that cannot ventilate or oxygenate adequately on their own.
Fluid Resuscitation
Aggressive fluids restore perfusion in shock. The classic shock doses are approximately 90 mL/kg for dogs and 45 to 60 mL/kg for cats, but they are given in measured boluses (often a quarter of the dose) with reassessment between boluses rather than all at once. Isotonic crystalloids are first line; colloids and hypertonic saline (7 to 7.5%) can rapidly expand intravascular volume with a smaller fluid load, which is useful in some situations such as head trauma.
Common Toxicological Emergencies
Critical Patient Monitoring
Critically ill patients need close, trend-based monitoring. Key targets include urine output of at least 1 to 2 mL/kg/hr (a sensitive indicator of perfusion and renal function), central venous pressure to assess volume status, blood lactate (elevated lactate reflects poor perfusion and is followed to gauge response), and blood pressure (keep mean arterial pressure above 60 to 65 mmHg). Serial reassessment - not a single snapshot - guides therapy.
Wound and Trauma Management
Trauma care prioritizes life threats. Control external hemorrhage with direct pressure. An open ("sucking") chest wound is covered with a sterile, occlusive dressing to stop air entry. Pneumothorax (air in the pleural space) may require thoracocentesis to remove air and restore lung expansion. A diaphragmatic hernia, often from blunt trauma, allows abdominal organs into the chest and impairs breathing; these patients are stabilized before surgical repair. Throughout, the technician supports oxygenation, perfusion, and pain control while the veterinarian directs definitive care.
High-Yield Summary: What the VTNE Tests Most
Sample VTNE-Style Questions
Test yourself with these representative questions from this domain:
Question 1
Four patients arrive at once. Which should be triaged to be seen first?
Answer: The patient with the most immediate threat to airway, breathing, or circulation - for example, a dog in respiratory distress or a cat with a urethral obstruction in shock - is seen before a stable fracture or a wellness visit.
Question 2
During CPR on a non-intubated medium dog, what compression rate and compression-to-ventilation ratio do the RECOVER guidelines recommend?
Answer: 100 to 120 compressions per minute with a 30:2 compression-to-ventilation ratio until the patient is intubated, after which compressions are continuous with ventilation about 10 breaths per minute.
Question 3
A dog ingested sugar-free gum containing xylitol. What is the primary clinical concern?
Answer: Hypoglycemia (from a surge of insulin release), followed by potential acute liver failure. Blood glucose is monitored and supplemented with dextrose, with liver support as needed.
Key Takeaways for the VTNE
- Triage by ABCs; the most unstable patient is seen first.
- Recognize shock by pale mucous membranes, prolonged CRT, weak pulse, and tachycardia.
- Know the four shock types and their treatments.
- Memorize RECOVER CPR: 100-120 compressions/min and 30:2 before intubation.
- Epinephrine is the first-line CPR drug; atropine for vagal bradycardia.
- Shock fluid doses are about 90 mL/kg (dog) and 45-60 mL/kg (cat), given in boluses.
- Match each toxin to its antidote: vitamin K1, N-acetylcysteine, fomepizole, dextrose.
- Permethrin and acetaminophen are especially dangerous in cats.
- Target urine output of at least 1-2 mL/kg/hr in critical patients.
- Cover an open chest wound with a sterile occlusive dressing.
Ready to Practice?
5,000+ VTNE-style questions across all 10 domains, detailed explanations, and performance tracking.
Start Free Trial - No Credit Card