RELlAS MEDICAL-SURGICAL TELEMETRY EXAM 100 – COMPREHENSIVE QUESTIONS
AND ANSWERS | VERIFIED AND WELLDETAILED ANSWERS | DETAILED EXPLANATIONS AND
RATIONALES | COMPLETE EXAM PREPARATION STUDY GUIDE | PRACTICE QUESTIONS |
LATEST EXAM UPDATE
• CORE DOMAINS*
• Cardiac Anatomy, Physiology, and Hemodynamics
• ECG and Cardiac Rhythm Interpretation
• Dysrhythmias and Conduction Disorders
• Acute Coronary Syndromes and Ischemic Heart Disease
• Heart Failure and Cardiomyopathies
• Electrolytes, Acid-Base Balance, and Dysrhythmia Risk
• Telemetry Monitoring, Safety, and Clinical Assessment
• Cardiovascular Medications and Therapeutic Management
• Emergency Cardiovascular Care and Rapid Response
• INTRODUCTION*
This comprehensive medical-surgical telemetry assessment is designed to strengthen the
knowledge and clinical reasoning required when caring for adults with cardiovascular and
telemetry-related conditions. The questions assess foundational cardiac physiology, ECG
interpretation, dysrhythmia recognition, ischemic syndromes, heart failure, electrolyte
disturbances, medications, monitoring, patient safety, and clinical decision-making. Multiple-
choice questions range from basic knowledge to application and clinical-priority situations.
Each question includes four plausible options, the correct answer, and an explanatory
rationale. The emphasis is on understanding rhythm characteristics, recognizing clinically
significant changes, prioritizing nursing actions, identifying deterioration, and applying
evidence-based principles to realistic medical-surgical situations.
RELlAS MEDICAL-SURGICAL TELEMETRY EXAM 300 – SECTION ONE
SECTION ONE: QUESTIONS 1–100
Question 1. Which cardiac structure normally serves as the primary pacemaker of the heart?
A. Atrioventricular node
B. Sinoatrial node
C. Bundle of His
D. Purkinje fibers
Correct Answer: B. Sinoatrial node
Explanation: The sinoatrial (SA) node normally generates the fastest spontaneous electrical
impulses in the heart, establishing the sinus rhythm and typically initiating each cardiac
cycle.
,Question 2. Which electrolyte abnormality is particularly associated with an increased risk of
ventricular dysrhythmias?
A. Mild hypernatremia
B. Hyperchloremia
C. Hypokalemia
D. Mild hyperglycemia
Correct Answer: C. Hypokalemia
Explanation: Potassium is critical for cardiac membrane excitability and repolarization. Low
potassium levels can increase myocardial irritability and predispose patients to potentially
serious dysrhythmias.
Question 3. On a normal sinus rhythm strip, the P wave represents:
A. Ventricular repolarization
B. Ventricular depolarization
C. Atrial depolarization
D. Atrial repolarization
Correct Answer: C. Atrial depolarization
Explanation: The P wave represents electrical activation of the atria. A normal sinus rhythm
has a consistent P wave before each QRS complex.
Question 4. Which ECG component represents ventricular depolarization?
A. P wave
B. QRS complex
C. T wave
D. PR segment
Correct Answer: B. QRS complex
Explanation: The QRS complex represents ventricular depolarization, which initiates
ventricular contraction. Atrial repolarization occurs simultaneously but is normally obscured
by the QRS complex.
Question 5. Which ECG finding is most characteristic of normal sinus rhythm?
A. Irregular rhythm with no identifiable P waves
B. P waves occurring independently of QRS complexes
C. A P wave before each QRS complex with a regular rhythm
D. Wide QRS complexes occurring at an irregular rate
Correct Answer: C. A P wave before each QRS complex with a regular rhythm
, Explanation: Normal sinus rhythm originates in the SA node and generally has a regular
rhythm, an appropriate rate, consistent P waves, and a P wave preceding each QRS complex.
Question 6. A telemetry monitor displays a regular rhythm at 82 beats/minute. Each QRS is
preceded by a consistent upright P wave, and the PR interval is within the expected range.
Which rhythm is most likely present?
A. Normal sinus rhythm
B. Atrial fibrillation
C. Ventricular tachycardia
D. Complete heart block
Correct Answer: A. Normal sinus rhythm
Explanation: A regular rate with consistent P waves preceding narrow QRS complexes is
characteristic of normal sinus rhythm.
Question 7. Which finding is most characteristic of atrial fibrillation?
A. Regular rhythm with one P wave before every QRS
B. Irregularly irregular rhythm with no distinct P waves
C. Wide QRS complexes at a regular rate
D. Progressive PR prolongation followed by a dropped beat
Correct Answer: B. Irregularly irregular rhythm with no distinct P waves
Explanation: Atrial fibrillation is characterized by chaotic atrial electrical activity, absent
discrete P waves, and an irregularly irregular ventricular response.
Question 8. A patient with atrial fibrillation is at increased risk for which major complication?
A. Thromboembolic stroke
B. Acute appendicitis
C. Hypoglycemia
D. Pneumothorax
Correct Answer: A. Thromboembolic stroke
Explanation: Ineffective atrial contraction in atrial fibrillation can promote blood stasis and
thrombus formation, increasing the risk of systemic embolization, including ischemic stroke.
Question 9. Which rhythm is classically described as having a “sawtooth” atrial pattern?
A. Atrial flutter
B. Ventricular fibrillation
C. Sinus bradycardia
D. Junctional rhythm
Correct Answer: A. Atrial flutter
AND ANSWERS | VERIFIED AND WELLDETAILED ANSWERS | DETAILED EXPLANATIONS AND
RATIONALES | COMPLETE EXAM PREPARATION STUDY GUIDE | PRACTICE QUESTIONS |
LATEST EXAM UPDATE
• CORE DOMAINS*
• Cardiac Anatomy, Physiology, and Hemodynamics
• ECG and Cardiac Rhythm Interpretation
• Dysrhythmias and Conduction Disorders
• Acute Coronary Syndromes and Ischemic Heart Disease
• Heart Failure and Cardiomyopathies
• Electrolytes, Acid-Base Balance, and Dysrhythmia Risk
• Telemetry Monitoring, Safety, and Clinical Assessment
• Cardiovascular Medications and Therapeutic Management
• Emergency Cardiovascular Care and Rapid Response
• INTRODUCTION*
This comprehensive medical-surgical telemetry assessment is designed to strengthen the
knowledge and clinical reasoning required when caring for adults with cardiovascular and
telemetry-related conditions. The questions assess foundational cardiac physiology, ECG
interpretation, dysrhythmia recognition, ischemic syndromes, heart failure, electrolyte
disturbances, medications, monitoring, patient safety, and clinical decision-making. Multiple-
choice questions range from basic knowledge to application and clinical-priority situations.
Each question includes four plausible options, the correct answer, and an explanatory
rationale. The emphasis is on understanding rhythm characteristics, recognizing clinically
significant changes, prioritizing nursing actions, identifying deterioration, and applying
evidence-based principles to realistic medical-surgical situations.
RELlAS MEDICAL-SURGICAL TELEMETRY EXAM 300 – SECTION ONE
SECTION ONE: QUESTIONS 1–100
Question 1. Which cardiac structure normally serves as the primary pacemaker of the heart?
A. Atrioventricular node
B. Sinoatrial node
C. Bundle of His
D. Purkinje fibers
Correct Answer: B. Sinoatrial node
Explanation: The sinoatrial (SA) node normally generates the fastest spontaneous electrical
impulses in the heart, establishing the sinus rhythm and typically initiating each cardiac
cycle.
,Question 2. Which electrolyte abnormality is particularly associated with an increased risk of
ventricular dysrhythmias?
A. Mild hypernatremia
B. Hyperchloremia
C. Hypokalemia
D. Mild hyperglycemia
Correct Answer: C. Hypokalemia
Explanation: Potassium is critical for cardiac membrane excitability and repolarization. Low
potassium levels can increase myocardial irritability and predispose patients to potentially
serious dysrhythmias.
Question 3. On a normal sinus rhythm strip, the P wave represents:
A. Ventricular repolarization
B. Ventricular depolarization
C. Atrial depolarization
D. Atrial repolarization
Correct Answer: C. Atrial depolarization
Explanation: The P wave represents electrical activation of the atria. A normal sinus rhythm
has a consistent P wave before each QRS complex.
Question 4. Which ECG component represents ventricular depolarization?
A. P wave
B. QRS complex
C. T wave
D. PR segment
Correct Answer: B. QRS complex
Explanation: The QRS complex represents ventricular depolarization, which initiates
ventricular contraction. Atrial repolarization occurs simultaneously but is normally obscured
by the QRS complex.
Question 5. Which ECG finding is most characteristic of normal sinus rhythm?
A. Irregular rhythm with no identifiable P waves
B. P waves occurring independently of QRS complexes
C. A P wave before each QRS complex with a regular rhythm
D. Wide QRS complexes occurring at an irregular rate
Correct Answer: C. A P wave before each QRS complex with a regular rhythm
, Explanation: Normal sinus rhythm originates in the SA node and generally has a regular
rhythm, an appropriate rate, consistent P waves, and a P wave preceding each QRS complex.
Question 6. A telemetry monitor displays a regular rhythm at 82 beats/minute. Each QRS is
preceded by a consistent upright P wave, and the PR interval is within the expected range.
Which rhythm is most likely present?
A. Normal sinus rhythm
B. Atrial fibrillation
C. Ventricular tachycardia
D. Complete heart block
Correct Answer: A. Normal sinus rhythm
Explanation: A regular rate with consistent P waves preceding narrow QRS complexes is
characteristic of normal sinus rhythm.
Question 7. Which finding is most characteristic of atrial fibrillation?
A. Regular rhythm with one P wave before every QRS
B. Irregularly irregular rhythm with no distinct P waves
C. Wide QRS complexes at a regular rate
D. Progressive PR prolongation followed by a dropped beat
Correct Answer: B. Irregularly irregular rhythm with no distinct P waves
Explanation: Atrial fibrillation is characterized by chaotic atrial electrical activity, absent
discrete P waves, and an irregularly irregular ventricular response.
Question 8. A patient with atrial fibrillation is at increased risk for which major complication?
A. Thromboembolic stroke
B. Acute appendicitis
C. Hypoglycemia
D. Pneumothorax
Correct Answer: A. Thromboembolic stroke
Explanation: Ineffective atrial contraction in atrial fibrillation can promote blood stasis and
thrombus formation, increasing the risk of systemic embolization, including ischemic stroke.
Question 9. Which rhythm is classically described as having a “sawtooth” atrial pattern?
A. Atrial flutter
B. Ventricular fibrillation
C. Sinus bradycardia
D. Junctional rhythm
Correct Answer: A. Atrial flutter
