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VTS (ECC) study materials
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VTS (ECC) practice questions

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Question 1Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which parameter is most appropriate to monitor the adequacy of chest compressions during CPR in a dog?

  1. Urine output
  2. Rectal temperature
  3. Central venous pressure
  4. End-tidal carbon dioxide concentration Correct answer.

Explanation

End-tidal CO2 reflects pulmonary blood flow and therefore cardiac output during CPR; a sudden rise often indicates return of spontaneous circulation. CVP, urine output, and temperature are not real-time compression-quality indicators.

Question 2Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

A cat in hemorrhagic shock has pale mucous membranes, tachycardia, and weak pulses. Which fluid strategy is most consistent with current resuscitation principles?

  1. Free water restriction until hemorrhage is controlled
  2. Hypertonic saline as a sole long-term replacement fluid
  3. Rapid large-volume crystalloid boluses until PCV normalizes
  4. Small aliquots of isotonic crystalloid or blood products titrated to perfusion endpoints Correct answer.

Explanation

Hemorrhagic shock resuscitation uses small, titrated boluses guided by perfusion parameters to avoid worsening hemorrhage and dilutional coagulopathy. Large-volume crystalloid pushes worsen edema and do not restore oxygen-carrying capacity.

Question 3Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which arrhythmia is most characteristic of gastric dilatation-volvulus in dogs and warrants immediate attention?

  1. Ventricular premature complexes Correct answer.
  2. Sinus bradycardia with second-degree block
  3. First-degree atrioventricular block
  4. Atrial standstill

Explanation

GDV commonly produces ventricular arrhythmias, often ventricular premature complexes, due to myocardial ischemia and electrolyte disturbances. These can progress to malignant arrhythmias and require monitoring and treatment.

Question 4Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

A dog with parvovirus has a blood glucose of 2.2 mmol/L (40 mg/dL). What is the most appropriate immediate action?

  1. Begin insulin therapy to stabilize metabolism
  2. Start oral glucose gel and recheck in 6 hours
  3. Withhold all fluids until glucose normalizes
  4. Administer intravenous dextrose and monitor glucose closely Correct answer.

Explanation

Symptomatic hypoglycemia requires prompt intravenous dextrose administration followed by monitoring and continued dextrose support. Oral therapy is unreliable in vomiting patients and delayed rechecking risks seizures.

Question 5Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which finding best indicates return of spontaneous circulation after prolonged CPR?

  1. Persistent asystole on the monitor
  2. Fixed dilated pupils
  3. Palpable femoral pulse with a rising end-tidal CO2 Correct answer.
  4. Continued absent heart sounds

Explanation

ROSC is identified by a palpable pulse, measurable blood pressure, and an abrupt rise in end-tidal CO2 reflecting restored pulmonary blood flow. Asystole and absent heart sounds indicate ongoing arrest.

Question 6Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which analgesic approach is most appropriate for a painful dog with acute pancreatitis while monitoring for hemodynamic effects?

  1. Full mu-opioid titration with reassessment Correct answer.
  2. A single dose of a sedative to reduce movement
  3. Withholding analgesia to monitor mentation
  4. NSAID monotherapy in the face of dehydration

Explanation

Acute pancreatitis is intensely painful and requires titrated full mu-opioid analgesia with frequent reassessment. NSAIDs are risky with dehydration and renal compromise, and withholding analgesia is inappropriate.

Question 7Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which electrolyte abnormality most strongly predisposes a patient to ventricular arrhythmias after urethral obstruction relief?

  1. Hypoproteinemia
  2. Hypochloremia
  3. Hyperkalemia Correct answer.
  4. Hyperphosphatemia

Explanation

Hyperkalemia from obstructed urine flow alters cardiac conduction and can cause bradycardia and ventricular arrhythmias. It must be addressed before or during relief of obstruction.

Question 8Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

A trauma patient has a systolic blood pressure of 70 mmHg and tachycardia. Which intervention is prioritized in initial stabilization?

  1. Warm compresses to the abdomen
  2. Rapid intravenous access and volume resuscitation Correct answer.
  3. Oral fluid administration
  4. Immediate surgery without stabilization

Explanation

Hypotensive trauma patients require rapid vascular access and titrated volume resuscitation to restore perfusion before definitive procedures. Oral fluids are ineffective and surgery without stabilization risks decompensation.

Question 9Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which monitoring parameter best detects early hemorrhagic shock before blood pressure falls?

  1. Body temperature
  2. Blood lactate concentration and trends Correct answer.
  3. Capillary refill time alone
  4. Serum albumin

Explanation

Lactate rises as tissue hypoperfusion develops and often changes before overt hypotension. Trend monitoring of lactate guides resuscitation more reliably than a single physical parameter.

Question 10Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which is the recommended initial energy dose for defibrillation in a dog using a monophasic defibrillator?

  1. 0.5 J/kg
  2. 10 to 20 J/kg
  3. 50 J/kg
  4. 2 to 5 J/kg Correct answer.

Explanation

Monophasic defibrillation in dogs typically uses approximately 2 to 5 J/kg; biphasic devices often use somewhat lower doses. Inappropriate doses risk failure or myocardial injury.

Question 11Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

A patient receiving a constant rate infusion of lidocaine develops muscle tremors and vomiting. What is the most appropriate response?

  1. Increase the infusion rate
  2. Ignore signs as expected effects
  3. Stop the infusion and reassess Correct answer.
  4. Add a second antiarrhythmic without change

Explanation

Tremors and vomiting are signs of lidocaine toxicity and the infusion should be stopped. The patient should be reassessed and the dose recalculated if therapy is restarted.

Question 12Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which acid-base disturbance is most consistent with a vomiting dog that has a low chloride and a high bicarbonate?

  1. Respiratory acidosis
  2. High anion gap metabolic acidosis
  3. Metabolic alkalosis with a hypochloremic component Correct answer.
  4. Metabolic acidosis with an elevated anion gap

Explanation

Vomiting loses gastric hydrochloric acid, producing a hypochloremic metabolic alkalosis. Chloride-rich fluid therapy corrects the alkalosis.

Question 13Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which action is most appropriate when a patient in respiratory distress due to pleural effusion requires stabilization?

  1. Immediate chest tube placement without stabilization
  2. High-dose intravenous fluids to dilute the effusion
  3. Supplemental oxygen and gentle thoracocentesis Correct answer.
  4. Forced exercise to improve ventilation

Explanation

Oxygen supplementation and careful thoracocentesis relieve respiratory compromise and allow safer further diagnostics. Forcing activity or large fluid loads worsens distress.

Question 14Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which parameter is most useful for assessing volume responsiveness in a ventilated critically ill patient?

  1. Serum potassium
  2. Pulse pressure variation Correct answer.
  3. Rectal temperature
  4. Body weight change over one hour

Explanation

Pulse pressure variation during controlled ventilation reflects stroke volume variation and can indicate volume responsiveness. Temperature, potassium, and short-term weight change do not assess preload responsiveness.

Question 15Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which mechanism best explains why hypertonic saline is used in some emergency resuscitation protocols?

  1. It directly increases red blood cell mass
  2. It provides long-term free water replacement
  3. It neutralizes all metabolic acids
  4. It rapidly expands intravascular volume with a small volume Correct answer.

Explanation

Hypertonic saline draws fluid into the intravascular space, producing rapid volume expansion with a small administered volume. Its effect is short-lived and it does not replace red cells or buffer acids.

Question 16Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which is the most appropriate first-line treatment for a dog with status epilepticus?

  1. Cooling to 30 degrees Celsius
  2. Intravenous benzodiazepine Correct answer.
  3. Maintenance anticonvulsant alone
  4. Oral phenobarbital after stabilization

Explanation

Status epilepticus is treated first with an intravenous benzodiazepine to terminate seizure activity rapidly. Oral or maintenance-only therapy is too slow, and aggressive cooling is harmful.

Question 17Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which finding best supports a diagnosis of sepsis in a critically ill dog?

  1. Isolated mild hyperglycemia
  2. Hypothermia with leukopenia in an infected patient Correct answer.
  3. Mild dehydration on skin turgor
  4. A single elevated liver enzyme

Explanation

Sepsis reflects a dysregulated host response to infection with organ dysfunction; hypothermia and leukopenia are markers of severe systemic response. Isolated mild abnormalities are nonspecific.

Question 18Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which nutritional approach is most appropriate for a critically ill cat that has been anorexic for several days?

  1. High-carbohydrate forced feeding
  2. Prolonged fasting until appetite returns
  3. Immediate full-calorie feeding to restore energy
  4. Gradual introduction of calories with monitoring for refeeding syndrome Correct answer.

Explanation

Prolonged anorexia risks refeeding syndrome, so calories are introduced gradually with electrolyte monitoring, especially phosphorus and potassium. Immediate full feeding can precipitate dangerous shifts.

Question 19Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which ECG change is most consistent with hypocalcemia in a critically ill patient?

  1. Absent P waves
  2. Tall peaked T waves
  3. Shortened PR interval
  4. Prolonged QT interval Correct answer.

Explanation

Hypocalcemia prolongs the QT interval and can predispose to arrhythmias. Tall peaked T waves and absent P waves are more typical of hyperkalemia.

Question 20Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which action is most appropriate for a dog with a closed chest wound and progressive dyspnea after trauma?

  1. Encourage vigorous exercise
  2. Provide oxygen and evaluate for pneumothorax Correct answer.
  3. Administer a large crystalloid bolus rapidly
  4. Apply a tight abdominal bandage

Explanation

Trauma patients with dyspnea require oxygen and evaluation for pneumothorax or other thoracic injury, often with thoracocentesis. Exercise and large rapid fluid loads can worsen respiratory compromise.

Question 21Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which statement best describes the role of capnography during CPR?

  1. It estimates pulmonary blood flow and can guide compression quality Correct answer.
  2. It measures arterial oxygen saturation directly
  3. It confirms a diagnosis of pneumonia
  4. It replaces the need for cardiac compressions

Explanation

Capnography measures exhaled CO2, which depends on pulmonary blood flow and metabolism, and thus helps assess compression quality and detect ROSC. It does not measure oxygen saturation or replace compressions.

Question 22Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

A patient with oliguric renal failure has hyperkalemia refractory to medical management. Which intervention is most appropriate?

  1. Initiate dialysis or refer for extracorporeal therapy Correct answer.
  2. Administer potassium supplementation
  3. Increase dietary potassium
  4. Continue fluid therapy alone indefinitely

Explanation

Refractory hyperkalemia in oliguric renal failure may require dialysis or extracorporeal therapy to remove potassium. Supplementation would worsen the condition.

Question 23Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which is the most appropriate method for confirming endotracheal tube placement in an emergency patient?

  1. Auscultation alone
  2. Palpation of the neck
  3. Observation of chest movement alone
  4. Capnography plus auscultation Correct answer.

Explanation

Capnography combined with auscultation reliably confirms tracheal placement and ventilation. Chest movement or palpation alone can be misleading, especially in esophageal intubation.

Question 24Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which monitoring approach is most appropriate for a patient receiving a prokinetic drug for ileus?

  1. Monitor only body weight weekly
  2. Monitor for abdominal pain and vomiting Correct answer.
  3. Increase opioid dose simultaneously
  4. Stop all monitoring once the drug is started

Explanation

Prokinetics can cause abdominal cramping and vomiting, so patients should be monitored for these adverse effects. Increasing opioids may counteract prokinetic effects.

Question 25Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which finding most suggests a need to reassess fluid therapy in a critically ill dog receiving high-rate crystalloids?

  1. Improved mentation and urine output
  2. New serous nasal discharge and weight gain Correct answer.
  3. Warming extremities
  4. Rising blood pressure toward normal

Explanation

Serous nasal discharge and rapid weight gain suggest volume overload and interstitial edema, prompting reassessment of the fluid rate. The other findings indicate improved perfusion.

Question 26Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which parameter is used to calculate the shock index in an emergency patient?

  1. Respiratory rate divided by heart rate
  2. Systolic blood pressure divided by heart rate
  3. Mean arterial pressure minus central venous pressure
  4. Heart rate divided by systolic blood pressure Correct answer.

Explanation

The shock index is the heart rate divided by the systolic blood pressure; a value above roughly 0.9 to 1.0 suggests inadequate perfusion and occult shock. It is used as a rapid bedside screen for hypoperfusion.

Question 27Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which route is preferred for initial emergency drug administration in a critically ill dog when intravenous access cannot be obtained quickly?

  1. Subcutaneous
  2. Intramuscular
  3. Intraosseous Correct answer.
  4. Oral

Explanation

The intraosseous route delivers drugs and fluids to the central circulation at rates comparable to intravenous administration and is the preferred alternative when IV access fails. Subcutaneous, oral, and intramuscular routes have unreliable or delayed absorption in shock.

Question 28Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which fluid type is most appropriate for initial resuscitation of a dog with hypovolemic shock from acute blood loss when blood products are not immediately available?

  1. 5% dextrose in water
  2. 0.45% sodium chloride
  3. Hypertonic saline alone
  4. Balanced isotonic crystalloid Correct answer.

Explanation

Balanced isotonic crystalloids are the standard first-line resuscitation fluid for hypovolemia while blood products are arranged. They restore intravascular volume and are isotonic with plasma.

Question 29Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which value is a commonly used target for mean arterial pressure during resuscitation of a critically ill dog?

  1. At least 100 mmHg
  2. At least 60 mmHg Correct answer.
  3. At least 140 mmHg
  4. At least 20 mmHg

Explanation

A mean arterial pressure of at least 60 mmHg is generally accepted as the minimum needed to maintain perfusion of vital organs in dogs. Pressures below this risk ischemic injury, while excessively high targets increase the risk of fluid overload.

Question 30Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which is the most appropriate initial action for an emergency patient that is not breathing and has no palpable pulse?

  1. Begin chest compressions immediately Correct answer.
  2. Place a urinary catheter
  3. Obtain thoracic radiographs
  4. Administer atropine and reassess

Explanation

Cardiopulmonary arrest requires immediate initiation of chest compressions to provide circulation; delays reduce the chance of return of spontaneous circulation. Diagnostics and other procedures are deferred until resuscitation is underway.

Question 31Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which drug is the first-line vasopressor used to support blood pressure in a hypotensive critically ill dog?

  1. Acepromazine
  2. Metoclopramide
  3. Furosemide
  4. Norepinephrine Correct answer.

Explanation

Norepinephrine is a first-line vasopressor that increases vascular tone and blood pressure in vasodilatory hypotension. It is titrated to effect with close hemodynamic monitoring.

Question 32Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which monitoring method provides a direct measurement of arterial oxygenation in a critically ill patient?

  1. Capnography
  2. Central venous pressure
  3. Pulse oximetry
  4. Arterial blood gas analysis Correct answer.

Explanation

Arterial blood gas analysis directly measures the partial pressure of oxygen in arterial blood, allowing calculation of oxygenation indices. Pulse oximetry estimates saturation indirectly and capnography reflects ventilation.

Question 33Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which condition is most commonly associated with the development of reperfusion injury after relief of a urethral obstruction in a cat?

  1. Hyperkalemia and cardiac arrhythmias Correct answer.
  2. Hypercalcemia and weakness
  3. Hypernatremia and seizures
  4. Hyperchloremia and acidosis

Explanation

Relief of urethral obstruction can cause a rapid shift of potassium and other electrolytes, and pre-existing hyperkalemia may provoke life-threatening arrhythmias during reperfusion. Careful ECG monitoring is required after decompression.

Question 34Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which finding best indicates that a patient has achieved return of spontaneous circulation after CPR?

  1. Palpable pulse with a consistent ECG rhythm Correct answer.
  2. Absence of audible heart sounds
  3. Continued need for chest compressions
  4. Fixed and dilated pupils

Explanation

Return of spontaneous circulation is defined by the presence of a palpable pulse and an organized rhythm generating effective perfusion. Pupillary changes and absent heart sounds indicate ongoing arrest.

Question 35Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

A dog in shock has received 60 mL/kg of crystalloid with no improvement in blood pressure. Which next step is most appropriate?

  1. Administer a diuretic
  2. Continue the same fluid rate indefinitely
  3. Transition to oral fluids
  4. Reassess for ongoing hemorrhage and consider blood products or vasopressors Correct answer.

Explanation

Failure to respond to an adequate crystalloid bolus suggests ongoing losses such as hemorrhage or a vasodilatory state requiring blood products or vasopressor support. Blindly continuing fluids risks volume overload without benefit.

Question 36Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

A dog with severe vomiting has a venous pH of 7.50 and a bicarbonate of 34 mEq/L. Which acid-base disturbance is present?

  1. Respiratory acidosis
  2. Metabolic alkalosis Correct answer.
  3. Respiratory alkalosis
  4. Metabolic acidosis

Explanation

An elevated pH with an elevated bicarbonate indicates a primary metabolic alkalosis, commonly from loss of gastric acid through vomiting. Compensation would raise carbon dioxide, but the primary process is metabolic.

Question 37Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

A cat with hypertrophic cardiomyopathy presents in respiratory distress with pulmonary crackles. Which treatment is most appropriate for initial stabilization?

  1. Rapid intravenous fluid bolus
  2. High-dose corticosteroids
  3. Atropine administration
  4. Oxygen supplementation and furosemide Correct answer.

Explanation

Congestive heart failure with pulmonary edema is managed with oxygen and diuretics to reduce pulmonary congestion. Fluid boluses would worsen edema and are contraindicated in this setting.

Question 38Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

A dog with a known history of diabetes mellitus presents obtunded with a blood glucose of 45 mg/dL. Which is the most appropriate immediate treatment?

  1. Oral hypoglycemic agents
  2. Intravenous insulin
  3. Withholding food and water
  4. Intravenous dextrose solution Correct answer.

Explanation

Symptomatic hypoglycemia requires immediate glucose administration, typically intravenous dextrose, to prevent neurologic injury. Insulin or oral hypoglycemics would worsen the hypoglycemia.

Question 39Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which action is most appropriate when a patient develops sudden severe bradycardia with hypotension during resuscitation?

  1. Perform a jugular venipuncture
  2. Increase the fluid rate without addressing the rhythm
  3. Give a beta-blocker
  4. Administer atropine and reassess the rhythm Correct answer.

Explanation

Symptomatic bradycardia with hypotension is treated with an anticholinergic such as atropine to increase heart rate and improve cardiac output. Beta-blockers would worsen the bradycardia.

Question 40Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

A trauma patient develops progressive subcutaneous emphysema and dyspnea after a bite wound to the neck. Which condition is most likely?

  1. Diaphragmatic hernia
  2. Pleural effusion
  3. Pulmonary thromboembolism
  4. Tracheal or airway rupture Correct answer.

Explanation

Air escaping from a disrupted airway tracks into subcutaneous tissues and can cause rapid respiratory compromise. This requires urgent airway assessment and stabilization.

Question 41Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which intervention is most appropriate for a patient with severe hyperthermia (43°C) and altered mentation after being locked in a car?

  1. Withholding all fluids
  2. Active cooling with cool water and intravenous fluids Correct answer.
  3. Covering with warm blankets
  4. Administering a stimulant

Explanation

Heatstroke requires rapid active cooling combined with intravenous fluid support to address dehydration and perfusion deficits. Warm blankets and fluid restriction would worsen the condition.

Question 42Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which finding is most consistent with a tension pneumothorax on physical examination?

  1. Bilateral crackles with fever
  2. Increased rectal temperature with normal respiratory effort
  3. Tachycardia with diminished breath sounds and progressive dyspnea Correct answer.
  4. Bradycardia with normal breath sounds

Explanation

Tension pneumothorax causes progressive respiratory distress, tachycardia, and diminished unilateral or bilateral breath sounds from accumulating pleural air. Immediate decompression is required.

Question 43Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

A patient receiving a high-rate crystalloid infusion develops serous nasal discharge, increased respiratory effort, and weight gain. Which action is most appropriate?

  1. Reduce the fluid rate and reassess Correct answer.
  2. Administer additional boluses
  3. Continue the current rate unchanged
  4. Increase the fluid rate

Explanation

These signs suggest volume overload with pulmonary edema, requiring reduction or cessation of fluids. Continued aggressive administration would worsen respiratory compromise.

Question 44Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which parameter is most useful for guiding the rate of a continuous insulin infusion in a patient with diabetic ketoacidosis?

  1. Body temperature alone
  2. Serial blood glucose and electrolyte measurements Correct answer.
  3. Urine specific gravity
  4. Single initial blood glucose value

Explanation

Insulin infusion rates are titrated using frequent blood glucose checks and electrolyte monitoring, especially potassium, which falls as insulin drives it intracellularly. A single value does not reflect the response to therapy.

Question 45Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which is the most appropriate initial approach to a patient with a suspected foreign body obstruction of the upper airway causing stridor?

  1. Administer a bronchodilator and discharge
  2. Provide oxygen and prepare for airway examination under anesthesia Correct answer.
  3. Perform abdominal palpation
  4. Immediately perform a tracheostomy without assessment

Explanation

Upper airway obstruction requires oxygen supplementation and controlled examination, often under anesthesia, to identify and relieve the obstruction. Blind tracheostomy without assessment risks complications.

Question 46Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

A dog with severe acute pancreatitis develops hypocalcemia. Which clinical sign is most directly attributable to this electrolyte abnormality?

  1. Hyperpigmentation of the skin
  2. Bradycardia with hypertension
  3. Muscle tremors and facial twitching Correct answer.
  4. Polyuria and polydipsia

Explanation

Hypocalcemia increases neuromuscular excitability, producing tremors, twitching, and in severe cases seizures. These signs reflect the role of calcium in neuromuscular stabilization.

Question 47Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which strategy best reduces the risk of catheter-related bloodstream infection in a critically ill patient with a central venous catheter?

  1. Covering the site with a nonsterile bandage
  2. Flushing with tap water
  3. Aseptic placement and regular catheter site assessment Correct answer.
  4. Routine replacement of the catheter every 24 hours

Explanation

Aseptic technique during placement and ongoing site assessment reduce catheter-related infection risk. Routine replacement and nonsterile care increase complications without benefit.

Question 48Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

A patient in septic shock remains hypotensive despite adequate fluid resuscitation. Which intervention best addresses the underlying pathophysiology?

  1. Withhold all vasoactive drugs
  2. Initiate a vasopressor infusion and reassess perfusion Correct answer.
  3. Administer additional large crystalloid boluses
  4. Start a diuretic infusion

Explanation

Septic shock involves vasodilation and maldistribution of blood flow; when fluids alone fail, vasopressors restore vascular tone and perfusion pressure. Additional large boluses risk edema without correcting vasoplegia.

Question 49Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

Which finding most strongly suggests a need to adjust analgesia in a critically ill postoperative patient?

  1. Decreased respiratory rate during sleep
  2. Stable heart rate with relaxed posture
  3. Elevated pain score with tachycardia and restlessness Correct answer.
  4. Normal appetite and grooming

Explanation

An elevated composite pain score with tachycardia and restlessness indicates inadequate analgesia and warrants adjustment. Stable vitals and normal behavior suggest adequate comfort.

Question 50Emergency and Critical Care (advanced skills, work experience, and continuing education in ECC)

A patient with acute kidney injury develops oliguria despite fluid resuscitation. Which action is most appropriate?

  1. Administer a large fluid bolus without assessment
  2. Restrict all monitoring
  3. Discontinue all treatments
  4. Assess volume status and consider diuretic or renal replacement therapy Correct answer.

Explanation

Oliguria after resuscitation requires reassessment of volume status and consideration of diuretics or renal replacement therapy. Blind boluses risk overload in a patient who may already be volume replete.