EKG NHA Study Guide Questions and
Answers | Latest Version | 2025/2026 |
Correct & Verified
Which rhythm shows a regular rhythm with a rate of 60–100 bpm and normal P waves?
✔✔Normal sinus rhythm
Which lead is typically used to monitor for inferior myocardial infarction?
✔✔Lead II
Which lead is typically used to monitor for anterior myocardial infarction?
✔✔V3 and V4
Which rhythm shows multiple P wave morphologies and an irregular ventricular rate?
✔✔Multifocal atrial tachycardia (MAT)
Which lead is placed at the fourth intercostal space, right sternal border?
✔✔V1
1
,Which lead is placed at the fifth intercostal space, midclavicular line?
✔✔V4
Which rhythm shows a slow rate, wide QRS, and no preceding P waves?
✔✔Junctional escape rhythm or ventricular escape rhythm
Which rhythm is characterized by a pause followed by a normal beat?
✔✔Sinus pause or sinus arrest
Which electrolyte imbalance can cause peaked T waves on EKG?
✔✔Hyperkalemia
Which electrolyte imbalance can cause flattened T waves and prominent U waves?
✔✔Hypokalemia
Which rhythm requires immediate defibrillation if the patient is pulseless?
✔✔Ventricular fibrillation
2
, Which rhythm is a potential precursor to sudden cardiac death if untreated?
✔✔Ventricular tachycardia
Which artifact is caused by a patient talking or coughing during the EKG?
✔✔Somatic tremor
Which patient preparation step ensures a clear EKG tracing?
✔✔Clean and dry electrode sites before application
What is the normal range for an adult resting heart rate?
✔✔60–100 beats per minute
Which part of the EKG represents atrial depolarization?
✔✔P wave
Which part of the EKG represents ventricular depolarization?
✔✔QRS complex
3
Answers | Latest Version | 2025/2026 |
Correct & Verified
Which rhythm shows a regular rhythm with a rate of 60–100 bpm and normal P waves?
✔✔Normal sinus rhythm
Which lead is typically used to monitor for inferior myocardial infarction?
✔✔Lead II
Which lead is typically used to monitor for anterior myocardial infarction?
✔✔V3 and V4
Which rhythm shows multiple P wave morphologies and an irregular ventricular rate?
✔✔Multifocal atrial tachycardia (MAT)
Which lead is placed at the fourth intercostal space, right sternal border?
✔✔V1
1
,Which lead is placed at the fifth intercostal space, midclavicular line?
✔✔V4
Which rhythm shows a slow rate, wide QRS, and no preceding P waves?
✔✔Junctional escape rhythm or ventricular escape rhythm
Which rhythm is characterized by a pause followed by a normal beat?
✔✔Sinus pause or sinus arrest
Which electrolyte imbalance can cause peaked T waves on EKG?
✔✔Hyperkalemia
Which electrolyte imbalance can cause flattened T waves and prominent U waves?
✔✔Hypokalemia
Which rhythm requires immediate defibrillation if the patient is pulseless?
✔✔Ventricular fibrillation
2
, Which rhythm is a potential precursor to sudden cardiac death if untreated?
✔✔Ventricular tachycardia
Which artifact is caused by a patient talking or coughing during the EKG?
✔✔Somatic tremor
Which patient preparation step ensures a clear EKG tracing?
✔✔Clean and dry electrode sites before application
What is the normal range for an adult resting heart rate?
✔✔60–100 beats per minute
Which part of the EKG represents atrial depolarization?
✔✔P wave
Which part of the EKG represents ventricular depolarization?
✔✔QRS complex
3
