Certification Examination Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. A 56-year-old male presents with acute chest pain radiating to
his left arm. ECG shows ST-elevation in leads II, III, and aVF.
Which coronary artery is most likely involved?
A. Left anterior descending
B. Right coronary artery
C. Circumflex artery
D. Left main coronary artery
Rationale: ST-elevation in II, III, and aVF indicates an inferior
myocardial infarction, most commonly due to right coronary
artery occlusion.
,2. Which of the following is the most appropriate initial treatment
for a patient in ventricular tachycardia with a pulse but
unstable?
A. Amiodarone 150 mg IV
B. Synchronized cardioversion
C. Defibrillation
D. Lidocaine 1 mg/kg IV
Rationale: Unstable VT with a pulse requires immediate
synchronized cardioversion to restore perfusing rhythm.
3. During mechanical ventilation, which parameter primarily
determines oxygenation?
A. Respiratory rate
B. Tidal volume
C. Fraction of inspired oxygen (FiO2)
D. PEEP
Rationale: Oxygenation is mainly influenced by FiO2 and PEEP,
while ventilation is affected by tidal volume and rate.
4. A patient in septic shock demonstrates hypotension
unresponsive to fluid resuscitation. The next step should be:
A. Administer high-dose corticosteroids
B. Begin broad-spectrum antibiotics
C. Initiate vasopressor therapy
D. Begin diuretics
, Rationale: Persistent hypotension after fluids in septic shock
requires vasopressors, typically norepinephrine, to maintain
perfusion.
5. Which drug is indicated for bradycardia with hypotension in the
critical care setting?
A. Atropine
B. Amiodarone
C. Epinephrine
D. Dopamine
Rationale: Atropine is first-line therapy for symptomatic
bradycardia to increase heart rate.
6. A patient with acute respiratory distress on BiPAP
develops hypotension and confusion. What is the
most likely cause?
A. Pulmonary embolism
B. Tension pneumothorax
C. Myocardial infarction
D. Asthma exacerbation
Rationale: Hypotension and confusion in a patient on positive
pressure ventilation may indicate tension pneumothorax due to
increased intrathoracic pressure.
7. Which lab value is most critical to monitor in a patient
receiving continuous IV insulin for DKA?
A. Potassium
B. Sodium
, C. Glucose
D. Potassium and glucose simultaneously
Rationale: Insulin lowers glucose and drives potassium into
cells, risking hypokalemia; both must be closely monitored.
8. Which of the following medications is a vasopressor primarily
used to improve coronary perfusion in cardiac arrest?
A. Dopamine
B. Epinephrine infusion
C. Epinephrine bolus
D. Norepinephrine
Rationale: Epinephrine bolus during cardiac arrest increases
coronary and cerebral perfusion pressures.
9. In a patient with severe asthma exacerbation, which
intervention is considered first-line if oxygenation is
inadequate?
A. IV corticosteroids
B. Nebulized albuterol and ipratropium
C. Magnesium sulfate infusion
D. Intubation
Rationale: First-line therapy for acute bronchospasm is
nebulized beta-agonists with anticholinergics; other
interventions are adjuncts or for refractory cases.
10. Which of the following best describes the use of
norepinephrine in shock?