EKG Interpretation and Dysrhythmias
Overview questions and Answers
Set 1
Q1. A normal or narrow QRS complex indicates the impulse is not formed in the ventricles and
is termed:
Midventricular
Supraventricular
Aberrant conduction
Idioventricular
Answer: Supraventricular
Answer A.
Q2. What does the R to R interval identify?
Answer: It identifies the heart rate regularity and is used to calculate the heart rate.
Answer A.
Q3. What is the typical range for a normal resting heart rate in beats per minute (bpm) for
adults?
40–60 bpm
60–100 bpm
100–120 bpm
120–150 bpm
Answer: 60–100 bpm
Answer A.
Q4. Which of the following best describes the characteristics of a normal P wave in an
electrocardiogram?
A P wave that is large, irregular, and can be in either direction relative to the R wave
, A P wave that is small, uniform, dome-shaped, and consistently precedes each QRS
complex
A P wave that is flat, wide, and appears after the QRS complex
A P wave that is biphasic and varies in shape depending on the heart rate
Answer: A P wave that is small, uniform, dome-shaped, and consistently precedes each
QRS complex
Answer A.
Q5. What is the normal range for the PR interval in an electrocardiogram?
0.08–0.12 seconds
0.12–0.20 seconds
0.20–0.24 seconds
0.24–0.30 seconds
Answer: 0.12–0.20 seconds
Answer A.
Q6. A standard 12-lead ECG consists of ____ limb leads, ____ augmented unipolar leads, and
____ chest leads.
12; 12; 12
3; 3; 6
4; 2; 6
6; 3; 3
Answer: 3; 3; 6
Answer A.
Q7. Which of the following statements accurately describes the function of a 3-Lead EKG?
It provides a comprehensive view of the heart's electrical activity using chest leads.
It exclusively monitors the electrical activity from the limb leads.
It is primarily used for diagnosing myocardial infarctions.
It requires additional leads to assess the heart's rhythm accurately.
Answer: It exclusively monitors the electrical activity from the limb leads.
Answer A.
Overview questions and Answers
Set 1
Q1. A normal or narrow QRS complex indicates the impulse is not formed in the ventricles and
is termed:
Midventricular
Supraventricular
Aberrant conduction
Idioventricular
Answer: Supraventricular
Answer A.
Q2. What does the R to R interval identify?
Answer: It identifies the heart rate regularity and is used to calculate the heart rate.
Answer A.
Q3. What is the typical range for a normal resting heart rate in beats per minute (bpm) for
adults?
40–60 bpm
60–100 bpm
100–120 bpm
120–150 bpm
Answer: 60–100 bpm
Answer A.
Q4. Which of the following best describes the characteristics of a normal P wave in an
electrocardiogram?
A P wave that is large, irregular, and can be in either direction relative to the R wave
, A P wave that is small, uniform, dome-shaped, and consistently precedes each QRS
complex
A P wave that is flat, wide, and appears after the QRS complex
A P wave that is biphasic and varies in shape depending on the heart rate
Answer: A P wave that is small, uniform, dome-shaped, and consistently precedes each
QRS complex
Answer A.
Q5. What is the normal range for the PR interval in an electrocardiogram?
0.08–0.12 seconds
0.12–0.20 seconds
0.20–0.24 seconds
0.24–0.30 seconds
Answer: 0.12–0.20 seconds
Answer A.
Q6. A standard 12-lead ECG consists of ____ limb leads, ____ augmented unipolar leads, and
____ chest leads.
12; 12; 12
3; 3; 6
4; 2; 6
6; 3; 3
Answer: 3; 3; 6
Answer A.
Q7. Which of the following statements accurately describes the function of a 3-Lead EKG?
It provides a comprehensive view of the heart's electrical activity using chest leads.
It exclusively monitors the electrical activity from the limb leads.
It is primarily used for diagnosing myocardial infarctions.
It requires additional leads to assess the heart's rhythm accurately.
Answer: It exclusively monitors the electrical activity from the limb leads.
Answer A.
