Complete Test Bank with Verified Questions, Correct Answers, Detailed
Rationales, Cardiac Emergencies, ECG Interpretation, Advanced Life
Support, Patient Assessment, Pharmacology, Clinical Scenarios & First-
Attempt Success
Question 1
What is the primary purpose of an ECG (electrocardiogram)?
A. To measure blood pressure
B. To assess heart rhythm and electrical activity
C. To evaluate respiratory rate
D. To determine blood glucose levels
CORRECT ANSWER: B. To assess heart rhythm and electrical activity
Rationale: An ECG records the electrical activity of the heart over a period of time,
allowing healthcare providers to identify arrhythmias and other cardiac issues.
Question 2
Which of the following is a common sign of acute myocardial infarction (AMI)?
A. Sudden headache
B. Chest pain radiating to the left arm
C. Abdominal pain exclusively
D. Swelling in the ankles
CORRECT ANSWER: B. Chest pain radiating to the left arm
Rationale: Chest pain that radiates to the left arm is a classic symptom of an AMI, often
described as squeezing or pressure.
Question 3
What medication is often used to treat a suspected STEMI?
A. Nitroglycerin
B. Aspirin
C. Morphine
D. All of the above
CORRECT ANSWER: D. All of the above
Rationale: In the event of a suspected STEMI, nitroglycerin can relieve chest pain,
aspirin can help reduce clot formation, and morphine may be used for severe pain
management.
Question 4
,Which heart rhythm is considered the most life-threatening and requires
immediate intervention?
A. Atrial fibrillation
B. Ventricular tachycardia
C. Bradycardia
D. Supraventricular tachycardia
CORRECT ANSWER: B. Ventricular tachycardia
Rationale: Ventricular tachycardia can lead to decreased cardiac output and, if
sustained, can result in ventricular fibrillation, which is fatal without prompt treatment.
Question 5
What is the characteristic finding in a patient with congestive heart failure (CHF)?
A. Increased urine output
B. Dyspnea on exertion
C. High-grade fever
D. Normal blood pressure
CORRECT ANSWER: B. Dyspnea on exertion
Rationale: Patients with CHF often experience difficulty breathing during physical
activity due to fluid overload and pulmonary congestion.
Question 6
What does the term "preload" refer to in cardiac physiology?
A. The pressure in the arteries during ventricular contraction
B. The volume of blood in the ventricles at the end of diastole
C. The amount of blood pumped by the heart per minute
D. The resistance the heart must overcome to eject blood
CORRECT ANSWER: B. The volume of blood in the ventricles at the end of diastole
Rationale: Preload is primarily determined by the volume of blood returning to the
heart, influencing cardiac output.
Question 7
Which of the following is typically NOT a cause of cardiac arrest?
A. Severe hypoxia
B. Anaphylactic shock
C. Hypertension
D. Cardiac arrhythmias
,CORRECT ANSWER: C. Hypertension
Rationale: While hypertension can lead to many cardiovascular issues, it is not
typically an immediate cause of cardiac arrest compared to other options listed.
Question 8
What does the "R wave" signify on an ECG?
A. Atrial depolarization
B. Ventricular depolarization
C. Ventricular repolarization
D. Atrial repolarization
CORRECT ANSWER: B. Ventricular depolarization
Rationale: The R wave represents the main phase of ventricular depolarization, which is
critical for the heart’s pumping action.
Question 9
When administering nitroglycerin, what is the primary contraindication?
A. Allergic reaction
B. Recent use of erectile dysfunction medications
C. Hypertension
D. Alcohol consumption
CORRECT ANSWER: B. Recent use of erectile dysfunction medications
Rationale: Nitroglycerin can lead to severe hypotension when used with certain erectile
dysfunction medications due to their effects on vasodilation.
Question 10
What rhythm does an AED (Automated External Defibrillator) advise a shock for?
A. Bradycardia
B. Asystole
C. Ventricular fibrillation
D. Sinus rhythm
CORRECT ANSWER: C. Ventricular fibrillation
Rationale: An AED is designed to detect and treat life-threatening arrhythmias like
ventricular fibrillation with a shock.
Question 11
, What is the primary action of beta-blockers?
A. Increase heart rate
B. Decrease heart rate
C. Increase cardiac output
D. Decrease preload
CORRECT ANSWER: B. Decrease heart rate
Rationale: Beta-blockers work by blocking the effects of adrenaline, leading to a
decrease in heart rate and workload on the heart.
Question 12
In patients with congestive heart failure, which position is generally most
comfortable?
A. Lying flat
B. Sitting upright
C. Lying on the left side
D. Standing
CORRECT ANSWER: B. Sitting upright
Rationale: Patients with CHF often feel more comfortable sitting upright as it helps
ease breathing by reducing venous return to the heart.
Question 13
Which electrolyte imbalance can lead to life-threatening arrhythmias?
A. Hypercalcemia
B. Hyperkalemia
C. Hyponatremia
D. Hypermagnesemia
CORRECT ANSWER: B. Hyperkalemia
Rationale: Elevated potassium levels can disrupt normal electrical conduction in the
heart, leading to potentially fatal arrhythmias.
Question 14
What is the first step in the treatment of a stable patient with suspected angina?
A. Administer aspirin
B. Administer nitroglycerin
C. Start CPR
D. Prepare for transport