,Syllabus Overview: 12-Lead Interpretation, ST Elevation, Electrolytes K+
Ca2+ Mg2+ Effects on ECG
1. Chapter 1: Heart Blocks - Page 4
2. Chapter 2: Atrial Flutter - Page 8
3. Chapter 3: Electrolyte Effects - Page 12
4. Chapter 4: Bradycardia - Page 16
5. Chapter 5: SVT - Page 20
6. Chapter 6: Ventricular Fibrillation - Page 24
7. Chapter 7: 12-Lead ECG - Page 28
8. Chapter 8: SVT - Page 32
9. Chapter 9: Bradycardia - Page 36
10. Chapter 10: Atrial Flutter - Page 40
11. Chapter 11: SVT - Page 44
12. Chapter 12: SVT - Page 48
13. Chapter 13: 12-Lead ECG - Page 52
14. Chapter 14: Bradycardia - Page 56
15. Chapter 15: Heart Blocks - Page 60
16. Chapter 16: Bradycardia - Page 64
17. Chapter 17: Atrial Fibrillation - Page 68
18. Chapter 18: Sinus Rhythm - Page 72
19. Chapter 19: Tachycardia - Page 76
20. Chapter 20: Bradycardia - Page 80
21. Chapter 21: Atrial Flutter - Page 84
22. Chapter 22: Sinus Rhythm - Page 88
23. Chapter 23: Tachycardia - Page 92
24. Chapter 24: Electrolyte Effects - Page 96
25. Chapter 25: Bradycardia - Page 100
,1. Which electrolyte imbalance causes peaked T waves, widened QRS, and The patient is on
cardiac monitor, vital signs stable/unstable. What is the most appropriate nursing
identification and intervention per Relias and AHA guidelines?
A. Normal sinus rhythm - continue monitoring
B. Ignore lethal rhythm
C. Give adenosine for complete heart block
D. Confuse SVT with atrial flutter
Answer: A
Rationale: Correct because it accurately identifies the dysrhythmia based on rate, regularity, P wave
morphology, PR interval, and QRS width per Relias and AHA ECG criteria. Understanding atrial vs ventricular
origin and conduction blocks is essential. Incorrect options misinterpret key measurements or confuse similar
rhythms. Mastery of 5-step ECG interpretation ensures accurate identification and timely intervention, which is
high-yield for Relias Dysrhythmia Basic Test success. Focus: P wave analysis.
2. Which electrolyte imbalance causes peaked T waves, widened QRS, and The patient is on
cardiac monitor, vital signs stable/unstable. What is the most appropriate nursing
identification and intervention per Relias and AHA guidelines?
A. Ignore lethal rhythm
B. Normal sinus rhythm - continue monitoring
C. Administer atropine for ventricular fibrillation
D. Sinus tachycardia with incorrect rate
Answer: B
Rationale: Correct because it accurately identifies the dysrhythmia based on rate, regularity, P wave
morphology, PR interval, and QRS width per Relias and AHA ECG criteria. Understanding atrial vs ventricular
origin and conduction blocks is essential. Incorrect options misinterpret key measurements or confuse similar
rhythms. Mastery of 5-step ECG interpretation ensures accurate identification and timely intervention, which is
high-yield for Relias Dysrhythmia Basic Test success. Focus: rate regularity.
3. Which electrolyte imbalance causes peaked T waves, widened QRS, and The patient is on
cardiac monitor, vital signs stable/unstable. What is the most appropriate nursing
identification and intervention per Relias and AHA guidelines?
A. Delay intervention and only document
B. Normal sinus rhythm - continue monitoring
C. Give adenosine for complete heart block
D. Sinus tachycardia with incorrect rate
Answer: B
Rationale: Selected answer aligns with current ECG interpretation guidelines, electrolyte effects on
myocardium, and 12-lead analysis. It considers ischemia, injury, infarction patterns, and electrolyte-induced
changes while integrating vital signs and patient symptoms. Alternatives demonstrate common errors like
confusing atrial flutter with SVT or missing heart block progression. This concept is frequently tested on Relias
and is vital for competent cardiac monitoring and emergency response. Focus: P wave analysis.
4. Which electrolyte imbalance causes peaked T waves, widened QRS, and The patient is on
cardiac monitor, vital signs stable/unstable. What is the most appropriate nursing
identification and intervention per Relias and AHA guidelines?
A. Ignore lethal rhythm
, B. Give adenosine for complete heart block
C. Normal sinus rhythm - continue monitoring
D. Confuse SVT with atrial flutter
Answer: C
Rationale: Correct because it accurately identifies the dysrhythmia based on rate, regularity, P wave
morphology, PR interval, and QRS width per Relias and AHA ECG criteria. Understanding atrial vs ventricular
origin and conduction blocks is essential. Incorrect options misinterpret key measurements or confuse similar
rhythms. Mastery of 5-step ECG interpretation ensures accurate identification and timely intervention, which is
high-yield for Relias Dysrhythmia Basic Test success. Focus: rate regularity.
5. A 12-lead ECG shows ST elevation in leads II, III, aVF. This suggests The patient is on
cardiac monitor, vital signs stable/unstable. What is the most appropriate nursing
identification and intervention per Relias and AHA guidelines?
A. Fail to activate emergency response
B. Defibrillate a stable sinus rhythm
C. Confuse SVT with atrial flutter
D. Ventricular fibrillation - initiate CPR and defibrillation per ACLS
Answer: D
Rationale: Selected answer aligns with current ECG interpretation guidelines, electrolyte effects on
myocardium, and 12-lead analysis. It considers ischemia, injury, infarction patterns, and electrolyte-induced
changes while integrating vital signs and patient symptoms. Alternatives demonstrate common errors like
confusing atrial flutter with SVT or missing heart block progression. This concept is frequently tested on Relias
and is vital for competent cardiac monitoring and emergency response. Focus: rate regularity.
6. A 12-lead ECG shows ST elevation in leads II, III, aVF. This suggests The patient is on
cardiac monitor, vital signs stable/unstable. What is the most appropriate nursing
identification and intervention per Relias and AHA guidelines?
A. Delay intervention and only document
B. Ventricular fibrillation - initiate CPR and defibrillation per ACLS
C. Administer atropine for ventricular fibrillation
D. Confuse SVT with atrial flutter
Answer: B
Rationale: This option reflects evidence-based ACLS and Relias competency standards for safe dysrhythmia
management. It prioritizes assessment, recognizes lethal rhythms, and implements correct emergency
response including oxygen, monitoring, medications, defibrillation, and provider notification. Distractors delay
care, use contraindicated drugs, or fail to recognize instability. Knowledge of causes, treatments, and
documentation is critical for passing and for patient safety in clinical practice. Focus: emergency response.
7. A 12-lead ECG shows ST elevation in leads II, III, aVF. This suggests The patient is on
cardiac monitor, vital signs stable/unstable. What is the most appropriate nursing
identification and intervention per Relias and AHA guidelines?
A. Ignore lethal rhythm
B. Defibrillate a stable sinus rhythm
C. Confuse SVT with atrial flutter
D. Ventricular fibrillation - initiate CPR and defibrillation per ACLS
Answer: D
Ca2+ Mg2+ Effects on ECG
1. Chapter 1: Heart Blocks - Page 4
2. Chapter 2: Atrial Flutter - Page 8
3. Chapter 3: Electrolyte Effects - Page 12
4. Chapter 4: Bradycardia - Page 16
5. Chapter 5: SVT - Page 20
6. Chapter 6: Ventricular Fibrillation - Page 24
7. Chapter 7: 12-Lead ECG - Page 28
8. Chapter 8: SVT - Page 32
9. Chapter 9: Bradycardia - Page 36
10. Chapter 10: Atrial Flutter - Page 40
11. Chapter 11: SVT - Page 44
12. Chapter 12: SVT - Page 48
13. Chapter 13: 12-Lead ECG - Page 52
14. Chapter 14: Bradycardia - Page 56
15. Chapter 15: Heart Blocks - Page 60
16. Chapter 16: Bradycardia - Page 64
17. Chapter 17: Atrial Fibrillation - Page 68
18. Chapter 18: Sinus Rhythm - Page 72
19. Chapter 19: Tachycardia - Page 76
20. Chapter 20: Bradycardia - Page 80
21. Chapter 21: Atrial Flutter - Page 84
22. Chapter 22: Sinus Rhythm - Page 88
23. Chapter 23: Tachycardia - Page 92
24. Chapter 24: Electrolyte Effects - Page 96
25. Chapter 25: Bradycardia - Page 100
,1. Which electrolyte imbalance causes peaked T waves, widened QRS, and The patient is on
cardiac monitor, vital signs stable/unstable. What is the most appropriate nursing
identification and intervention per Relias and AHA guidelines?
A. Normal sinus rhythm - continue monitoring
B. Ignore lethal rhythm
C. Give adenosine for complete heart block
D. Confuse SVT with atrial flutter
Answer: A
Rationale: Correct because it accurately identifies the dysrhythmia based on rate, regularity, P wave
morphology, PR interval, and QRS width per Relias and AHA ECG criteria. Understanding atrial vs ventricular
origin and conduction blocks is essential. Incorrect options misinterpret key measurements or confuse similar
rhythms. Mastery of 5-step ECG interpretation ensures accurate identification and timely intervention, which is
high-yield for Relias Dysrhythmia Basic Test success. Focus: P wave analysis.
2. Which electrolyte imbalance causes peaked T waves, widened QRS, and The patient is on
cardiac monitor, vital signs stable/unstable. What is the most appropriate nursing
identification and intervention per Relias and AHA guidelines?
A. Ignore lethal rhythm
B. Normal sinus rhythm - continue monitoring
C. Administer atropine for ventricular fibrillation
D. Sinus tachycardia with incorrect rate
Answer: B
Rationale: Correct because it accurately identifies the dysrhythmia based on rate, regularity, P wave
morphology, PR interval, and QRS width per Relias and AHA ECG criteria. Understanding atrial vs ventricular
origin and conduction blocks is essential. Incorrect options misinterpret key measurements or confuse similar
rhythms. Mastery of 5-step ECG interpretation ensures accurate identification and timely intervention, which is
high-yield for Relias Dysrhythmia Basic Test success. Focus: rate regularity.
3. Which electrolyte imbalance causes peaked T waves, widened QRS, and The patient is on
cardiac monitor, vital signs stable/unstable. What is the most appropriate nursing
identification and intervention per Relias and AHA guidelines?
A. Delay intervention and only document
B. Normal sinus rhythm - continue monitoring
C. Give adenosine for complete heart block
D. Sinus tachycardia with incorrect rate
Answer: B
Rationale: Selected answer aligns with current ECG interpretation guidelines, electrolyte effects on
myocardium, and 12-lead analysis. It considers ischemia, injury, infarction patterns, and electrolyte-induced
changes while integrating vital signs and patient symptoms. Alternatives demonstrate common errors like
confusing atrial flutter with SVT or missing heart block progression. This concept is frequently tested on Relias
and is vital for competent cardiac monitoring and emergency response. Focus: P wave analysis.
4. Which electrolyte imbalance causes peaked T waves, widened QRS, and The patient is on
cardiac monitor, vital signs stable/unstable. What is the most appropriate nursing
identification and intervention per Relias and AHA guidelines?
A. Ignore lethal rhythm
, B. Give adenosine for complete heart block
C. Normal sinus rhythm - continue monitoring
D. Confuse SVT with atrial flutter
Answer: C
Rationale: Correct because it accurately identifies the dysrhythmia based on rate, regularity, P wave
morphology, PR interval, and QRS width per Relias and AHA ECG criteria. Understanding atrial vs ventricular
origin and conduction blocks is essential. Incorrect options misinterpret key measurements or confuse similar
rhythms. Mastery of 5-step ECG interpretation ensures accurate identification and timely intervention, which is
high-yield for Relias Dysrhythmia Basic Test success. Focus: rate regularity.
5. A 12-lead ECG shows ST elevation in leads II, III, aVF. This suggests The patient is on
cardiac monitor, vital signs stable/unstable. What is the most appropriate nursing
identification and intervention per Relias and AHA guidelines?
A. Fail to activate emergency response
B. Defibrillate a stable sinus rhythm
C. Confuse SVT with atrial flutter
D. Ventricular fibrillation - initiate CPR and defibrillation per ACLS
Answer: D
Rationale: Selected answer aligns with current ECG interpretation guidelines, electrolyte effects on
myocardium, and 12-lead analysis. It considers ischemia, injury, infarction patterns, and electrolyte-induced
changes while integrating vital signs and patient symptoms. Alternatives demonstrate common errors like
confusing atrial flutter with SVT or missing heart block progression. This concept is frequently tested on Relias
and is vital for competent cardiac monitoring and emergency response. Focus: rate regularity.
6. A 12-lead ECG shows ST elevation in leads II, III, aVF. This suggests The patient is on
cardiac monitor, vital signs stable/unstable. What is the most appropriate nursing
identification and intervention per Relias and AHA guidelines?
A. Delay intervention and only document
B. Ventricular fibrillation - initiate CPR and defibrillation per ACLS
C. Administer atropine for ventricular fibrillation
D. Confuse SVT with atrial flutter
Answer: B
Rationale: This option reflects evidence-based ACLS and Relias competency standards for safe dysrhythmia
management. It prioritizes assessment, recognizes lethal rhythms, and implements correct emergency
response including oxygen, monitoring, medications, defibrillation, and provider notification. Distractors delay
care, use contraindicated drugs, or fail to recognize instability. Knowledge of causes, treatments, and
documentation is critical for passing and for patient safety in clinical practice. Focus: emergency response.
7. A 12-lead ECG shows ST elevation in leads II, III, aVF. This suggests The patient is on
cardiac monitor, vital signs stable/unstable. What is the most appropriate nursing
identification and intervention per Relias and AHA guidelines?
A. Ignore lethal rhythm
B. Defibrillate a stable sinus rhythm
C. Confuse SVT with atrial flutter
D. Ventricular fibrillation - initiate CPR and defibrillation per ACLS
Answer: D
