Relias Medical Surgical-Telemetry Exam 150 QUESTIONS
AND 100% CORRECT SOLUTIONS|UPDATED VERSION
2026!!!|GUARANTEED PASS|EXAM READY
1. What rhythm is characterized by absent P waves and an irregularly irregular rhythm?
A. Sinus tachycardia
B. Atrial fibrillation
C. Ventricular tachycardia
D. First-degree AV block
Correct Answer: B
Rationale: Atrial fibrillation has no organized atrial activity and irregular rhythm.
2. What is the priority intervention for ventricular tachycardia with a pulse?
A. CPR
B. Synchronized cardioversion
C. Defibrillation
D. Oxygen only
Correct Answer: B
Rationale: Synchronized cardioversion is used when a pulse is present.
3. What rhythm requires immediate defibrillation?
A. Asystole
B. Ventricular fibrillation
C. Sinus bradycardia
D. Atrial flutter
Correct Answer: B
Rationale: Ventricular fibrillation is a shockable lethal rhythm.
4. What ECG change is seen in hyperkalemia?
A. U waves
B. Peaked T waves
C. ST depression
D. Prolonged QT
Correct Answer: B
Rationale: Hyperkalemia causes tall peaked T waves.
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,5. What electrolyte imbalance causes torsades de pointes?
A. Hyperkalemia
B. Hypomagnesemia
C. Hypercalcemia
D. Hypernatremia
Correct Answer: B
Rationale: Low magnesium predisposes to torsades.
6. What is the first sign of hypoxia?
A. Cyanosis
B. Restlessness
C. Bradycardia
D. Hypotension
Correct Answer: B
Rationale: Neurologic changes occur early.
7. What oxygen device delivers highest FiO₂?
A. Nasal cannula
B. Simple mask
C. Non-rebreather mask
D. Venturi mask
Correct Answer: C
Rationale: Non-rebreather provides up to near 100% oxygen.
8. Normal sinus rhythm heart rate is?
A. 40–60 bpm
B. 60–100 bpm
C. 100–120 bpm
D. 120–150 bpm
Correct Answer: B
Rationale: Normal adult range is 60–100 bpm.
9. Sawtooth ECG waves indicate?
A. Atrial fibrillation
B. Atrial flutter
C. Ventricular fibrillation
D. Asystole
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, Correct Answer: B
Rationale: Atrial flutter shows sawtooth pattern.
10. Treatment for symptomatic bradycardia is?
A. Adenosine
B. Atropine
C. Amiodarone
D. Heparin
Correct Answer: B
Rationale: Atropine increases heart rate.
11. First-line medication for SVT is?
A. Adenosine
B. Digoxin
C. Lasix
D. Morphine
Correct Answer: A
Rationale: Adenosine briefly blocks AV node.
12. Most common cause of atrial fibrillation is?
A. Hyperthyroidism
B. Hypertension
C. Valvular disease
D. All of the above
Correct Answer: D
Rationale: Multiple cardiac conditions contribute.
13. Major risk of atrial fibrillation is?
A. Infection
B. Stroke
C. Kidney failure
D. Asthma
Correct Answer: B
Rationale: Blood pooling causes thrombus formation.
14. Medication to prevent stroke in AFib is?
A. Antibiotics
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AND 100% CORRECT SOLUTIONS|UPDATED VERSION
2026!!!|GUARANTEED PASS|EXAM READY
1. What rhythm is characterized by absent P waves and an irregularly irregular rhythm?
A. Sinus tachycardia
B. Atrial fibrillation
C. Ventricular tachycardia
D. First-degree AV block
Correct Answer: B
Rationale: Atrial fibrillation has no organized atrial activity and irregular rhythm.
2. What is the priority intervention for ventricular tachycardia with a pulse?
A. CPR
B. Synchronized cardioversion
C. Defibrillation
D. Oxygen only
Correct Answer: B
Rationale: Synchronized cardioversion is used when a pulse is present.
3. What rhythm requires immediate defibrillation?
A. Asystole
B. Ventricular fibrillation
C. Sinus bradycardia
D. Atrial flutter
Correct Answer: B
Rationale: Ventricular fibrillation is a shockable lethal rhythm.
4. What ECG change is seen in hyperkalemia?
A. U waves
B. Peaked T waves
C. ST depression
D. Prolonged QT
Correct Answer: B
Rationale: Hyperkalemia causes tall peaked T waves.
1|Page
,5. What electrolyte imbalance causes torsades de pointes?
A. Hyperkalemia
B. Hypomagnesemia
C. Hypercalcemia
D. Hypernatremia
Correct Answer: B
Rationale: Low magnesium predisposes to torsades.
6. What is the first sign of hypoxia?
A. Cyanosis
B. Restlessness
C. Bradycardia
D. Hypotension
Correct Answer: B
Rationale: Neurologic changes occur early.
7. What oxygen device delivers highest FiO₂?
A. Nasal cannula
B. Simple mask
C. Non-rebreather mask
D. Venturi mask
Correct Answer: C
Rationale: Non-rebreather provides up to near 100% oxygen.
8. Normal sinus rhythm heart rate is?
A. 40–60 bpm
B. 60–100 bpm
C. 100–120 bpm
D. 120–150 bpm
Correct Answer: B
Rationale: Normal adult range is 60–100 bpm.
9. Sawtooth ECG waves indicate?
A. Atrial fibrillation
B. Atrial flutter
C. Ventricular fibrillation
D. Asystole
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, Correct Answer: B
Rationale: Atrial flutter shows sawtooth pattern.
10. Treatment for symptomatic bradycardia is?
A. Adenosine
B. Atropine
C. Amiodarone
D. Heparin
Correct Answer: B
Rationale: Atropine increases heart rate.
11. First-line medication for SVT is?
A. Adenosine
B. Digoxin
C. Lasix
D. Morphine
Correct Answer: A
Rationale: Adenosine briefly blocks AV node.
12. Most common cause of atrial fibrillation is?
A. Hyperthyroidism
B. Hypertension
C. Valvular disease
D. All of the above
Correct Answer: D
Rationale: Multiple cardiac conditions contribute.
13. Major risk of atrial fibrillation is?
A. Infection
B. Stroke
C. Kidney failure
D. Asthma
Correct Answer: B
Rationale: Blood pooling causes thrombus formation.
14. Medication to prevent stroke in AFib is?
A. Antibiotics
3|Page
