ECG Workout
Exercises in Arrhythmia Interpretation
8th Edition
Author(s)Jane Huff
,Question 1
A cardiac monitoring student reviews the pathway of blood
flow through the heart. Which sequence correctly describes
normal blood flow?
A. Right atrium → right ventricle → pulmonary artery → lungs
→ left atrium → left ventricle → aorta
B. Right atrium → left atrium → right ventricle → lungs → aorta
C. Left atrium → left ventricle → pulmonary artery → lungs →
right atrium
D. Vena cava → left atrium → left ventricle → pulmonary vein
→ aorta
Correct Answer: A
Rationale:
Normal circulation begins with venous blood entering the right
atrium, flowing into the right ventricle, and then traveling
through the pulmonary artery to the lungs for oxygenation.
Oxygenated blood returns to the left atrium, moves into the
left ventricle, and is pumped through the aorta to systemic
circulation.
• Option B incorrectly bypasses normal ventricular flow.
• Option C reverses pulmonary circulation.
• Option D incorrectly places venous return into the left
atrium.
,Source:
ECG Workout: Exercises in Arrhythmia Interpretation – Chapter
1
Question 2
An ECG learner is reviewing cardiac valve function. Which valve
prevents blood from flowing back 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 lies between the left atrium and left ventricle.
During ventricular systole, it closes to prevent regurgitation into
the left atrium.
• The tricuspid valve separates the right atrium and right
ventricle.
• The pulmonic valve prevents backflow from the pulmonary
artery.
• The aortic valve prevents backflow from the aorta.
, Source:
ECG Workout: Exercises in Arrhythmia Interpretation – Chapter
1
Question 3
A telemetry nurse explains the function of the coronary
arteries. Which statement is correct?
A. Coronary arteries carry deoxygenated blood to the lungs
B. Coronary arteries supply oxygenated blood to the
myocardium
C. Coronary arteries drain blood into the vena cava
D. Coronary arteries pump blood into the left ventricle
Correct Answer: B
Rationale:
The coronary arteries supply oxygen-rich blood directly to the
myocardium. Adequate coronary perfusion is necessary for
effective cardiac contraction and electrical conduction.
• Option A describes pulmonary circulation.
• Option C refers to venous drainage.
• Option D describes ventricular pumping, not coronary
circulation.
Source:
ECG Workout: Exercises in Arrhythmia Interpretation – Chapter
1
Exercises in Arrhythmia Interpretation
8th Edition
Author(s)Jane Huff
,Question 1
A cardiac monitoring student reviews the pathway of blood
flow through the heart. Which sequence correctly describes
normal blood flow?
A. Right atrium → right ventricle → pulmonary artery → lungs
→ left atrium → left ventricle → aorta
B. Right atrium → left atrium → right ventricle → lungs → aorta
C. Left atrium → left ventricle → pulmonary artery → lungs →
right atrium
D. Vena cava → left atrium → left ventricle → pulmonary vein
→ aorta
Correct Answer: A
Rationale:
Normal circulation begins with venous blood entering the right
atrium, flowing into the right ventricle, and then traveling
through the pulmonary artery to the lungs for oxygenation.
Oxygenated blood returns to the left atrium, moves into the
left ventricle, and is pumped through the aorta to systemic
circulation.
• Option B incorrectly bypasses normal ventricular flow.
• Option C reverses pulmonary circulation.
• Option D incorrectly places venous return into the left
atrium.
,Source:
ECG Workout: Exercises in Arrhythmia Interpretation – Chapter
1
Question 2
An ECG learner is reviewing cardiac valve function. Which valve
prevents blood from flowing back 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 lies between the left atrium and left ventricle.
During ventricular systole, it closes to prevent regurgitation into
the left atrium.
• The tricuspid valve separates the right atrium and right
ventricle.
• The pulmonic valve prevents backflow from the pulmonary
artery.
• The aortic valve prevents backflow from the aorta.
, Source:
ECG Workout: Exercises in Arrhythmia Interpretation – Chapter
1
Question 3
A telemetry nurse explains the function of the coronary
arteries. Which statement is correct?
A. Coronary arteries carry deoxygenated blood to the lungs
B. Coronary arteries supply oxygenated blood to the
myocardium
C. Coronary arteries drain blood into the vena cava
D. Coronary arteries pump blood into the left ventricle
Correct Answer: B
Rationale:
The coronary arteries supply oxygen-rich blood directly to the
myocardium. Adequate coronary perfusion is necessary for
effective cardiac contraction and electrical conduction.
• Option A describes pulmonary circulation.
• Option C refers to venous drainage.
• Option D describes ventricular pumping, not coronary
circulation.
Source:
ECG Workout: Exercises in Arrhythmia Interpretation – Chapter
1
