ECG Workout
Exercises in Arrhythmia Interpretation
8th Edition
Author(s)Jane Huff
,Question 1
A patient’s ECG demonstrates a normal sinus rhythm with
appropriate atrial and ventricular conduction. Which cardiac
structure is responsible for preventing backflow of blood from
the left ventricle into the left atrium during ventricular
contraction?
A. Pulmonic valve
B. Tricuspid valve
C. Mitral valve
D. Aortic valve
Correct Answer: C
Rationale:
The mitral valve is located between the left atrium and left
ventricle and closes during ventricular systole to prevent
backflow into the left atrium. The pulmonic valve prevents
backflow from the pulmonary artery into the right ventricle.
The tricuspid valve separates the right atrium and right
ventricle. The aortic valve prevents backflow from the aorta
into the left ventricle.
,Source:
ECG Workout: Exercises in Arrhythmia Interpretation, 8th
Edition – Chapter 1
Question 2
An ECG rhythm strip shows coordinated atrial and ventricular
activity. Blood is ejected from the right ventricle into which
structure immediately after passing through the pulmonic
valve?
A. Aorta
B. Left atrium
C. Pulmonary artery
D. Pulmonary vein
Correct Answer: C
Rationale:
Blood leaves the right ventricle through the pulmonic valve and
enters the pulmonary artery on its way to the lungs for
oxygenation. The aorta carries blood from the left ventricle.
Pulmonary veins return oxygenated blood to the left atrium.
Source:
ECG Workout: Exercises in Arrhythmia Interpretation, 8th
Edition – Chapter 1
Question 3
, A telemetry patient has a regular sinus rhythm at 72 bpm.
Which chamber receives oxygenated blood from the pulmonary
veins?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Correct Answer: C
Rationale:
The pulmonary veins return oxygenated blood from the lungs
to the left atrium. The right atrium receives deoxygenated
blood from systemic circulation. The left ventricle pumps
oxygenated blood into systemic circulation.
Source:
ECG Workout: Exercises in Arrhythmia Interpretation, 8th
Edition – Chapter 1
Question 4
A patient’s ECG demonstrates a regular rhythm with normal
ventricular depolarization. Which structure pumps oxygenated
blood into systemic circulation?
A. Right atrium
B. Right ventricle
Exercises in Arrhythmia Interpretation
8th Edition
Author(s)Jane Huff
,Question 1
A patient’s ECG demonstrates a normal sinus rhythm with
appropriate atrial and ventricular conduction. Which cardiac
structure is responsible for preventing backflow of blood from
the left ventricle into the left atrium during ventricular
contraction?
A. Pulmonic valve
B. Tricuspid valve
C. Mitral valve
D. Aortic valve
Correct Answer: C
Rationale:
The mitral valve is located between the left atrium and left
ventricle and closes during ventricular systole to prevent
backflow into the left atrium. The pulmonic valve prevents
backflow from the pulmonary artery into the right ventricle.
The tricuspid valve separates the right atrium and right
ventricle. The aortic valve prevents backflow from the aorta
into the left ventricle.
,Source:
ECG Workout: Exercises in Arrhythmia Interpretation, 8th
Edition – Chapter 1
Question 2
An ECG rhythm strip shows coordinated atrial and ventricular
activity. Blood is ejected from the right ventricle into which
structure immediately after passing through the pulmonic
valve?
A. Aorta
B. Left atrium
C. Pulmonary artery
D. Pulmonary vein
Correct Answer: C
Rationale:
Blood leaves the right ventricle through the pulmonic valve and
enters the pulmonary artery on its way to the lungs for
oxygenation. The aorta carries blood from the left ventricle.
Pulmonary veins return oxygenated blood to the left atrium.
Source:
ECG Workout: Exercises in Arrhythmia Interpretation, 8th
Edition – Chapter 1
Question 3
, A telemetry patient has a regular sinus rhythm at 72 bpm.
Which chamber receives oxygenated blood from the pulmonary
veins?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Correct Answer: C
Rationale:
The pulmonary veins return oxygenated blood from the lungs
to the left atrium. The right atrium receives deoxygenated
blood from systemic circulation. The left ventricle pumps
oxygenated blood into systemic circulation.
Source:
ECG Workout: Exercises in Arrhythmia Interpretation, 8th
Edition – Chapter 1
Question 4
A patient’s ECG demonstrates a regular rhythm with normal
ventricular depolarization. Which structure pumps oxygenated
blood into systemic circulation?
A. Right atrium
B. Right ventricle
