WorksheetsPerfusion Monitoring: EKG Rhythm KA
Total questions: 15
Worksheet time: 8mins
Which wave on the EKG represents atrial depolarization?
P wave
QRS complex
T wave
U wave
What is the normal duration of the PR interval in seconds?
0.04–0.08 seconds
0.12–0.20 seconds
0.20–0.40 seconds
0.40–0.60 seconds
Which EKG component represents ventricular repolarization?
P wave
QRS complex
T wave
PR interval
Which of the following best describes the QRS complex on an EKG?
Represents atrial repolarization
Represents ventricular depolarization
Represents ventricular repolarization
Represents atrial depolarization
Which arrhythmia is characterized by a sawtooth pattern of flutter waves?
Atrial fibrillation
Ventricular tachycardia
Atrial flutter
Sinus bradycardia
What is the correct way to calculate heart rate using the 1500 method on a regular EKG rhythm strip?
Divide 1500 by the number of small boxes between two consecutive R waves
Divide 1500 by the number of large boxes between two consecutive R waves
Multiply the number of QRS complexes in 6 seconds by 10
Count the number of QRS complexes in 3 seconds
A rhythm strip shows a regular rhythm with a rate of 150 bpm, narrow QRS complexes, and visible P waves before each QRS. Which rhythm is most likely present?
Sinus tachycardia
Atrial fibrillation
Ventricular fibrillation
Sinus bradycardia
If the QT interval measures 0.48 seconds on a rhythm strip, what does this indicate?
Normal QT interval
Prolonged QT interval
Shortened QT interval
Unable to determine
Which of the following is considered a lethal arrhythmia?
Sinus tachycardia
Atrial flutter
Ventricular fibrillation
First-degree AV block
A patient’s EKG shows no identifiable P waves, irregularly irregular rhythm, and narrow QRS complexes. What is the most likely arrhythmia?
Atrial fibrillation
Sinus rhythm
Ventricular tachycardia
Atrial flutter
Given a rhythm strip with a regular rhythm, a heart rate of 40 bpm, and a prolonged PR interval, what is the most likely diagnosis?
Sinus tachycardia
First-degree AV block
Ventricular fibrillation
Atrial flutter
A 6-second EKG strip shows 8 QRS complexes. What is the patient’s heart rate?
60 bpm
70 bpm
80 bpm
90 bpm
A patient presents with sudden loss of consciousness. The EKG shows chaotic, irregular deflections of varying amplitude and no identifiable QRS complexes. What is the immediate priority intervention?
Administer oxygen
Check the patient's pulse
Start IV fluids
Give atropine
You observe a rhythm strip with a wide QRS complex, no P waves, and a rate of 180 bpm. Which arrhythmia is most likely present?
Atrial flutter
Ventricular tachycardia
Sinus tachycardia
Atrial fibrillation
A patient’s EKG shows a PR interval of 0.24 seconds, a regular rhythm, and a heart rate of 68 bpm. What is the most appropriate interpretation?
Normal sinus rhythm
First-degree AV block
Sinus bradycardia
Second-degree AV block
