Cardiac Physiology Mastery: Heart Sounds (S1, S2,
S3), Murmur Grading & Pericardial Friction Rub,
Apical Impulse & Jugular Venous Pulse (JVP),
Carotid Artery Assessment, ECG Interpretation (P
Wave, QRS, T Wave), Sinoatrial Node Conduction,
Coronary Artery Disease (CAD) Risk Reduction,
Heart Failure Recognition, COLDSPA Chest Pain
Assessment, Split Heart Sounds, and Clinical
Cardiac Prioritization for NCLEX & Med-Surg
Success Exam Questions Verified A+ Graded
Rationales Latest Updated 2026
1. While auscultating the client's heart at the third intercostal space and on the left sternal
border, the nurse notes a high-pitched, scratchy sound that increases with exhalation with the
client leaning forward. The nurse should document which of the following?
A) Pericardial friction rub
B) Midsystolic click
C) Summation gallop
D) Aortic ejection click
A) Pericardial friction rub
2. During chest auscultation, the nurse hears a quiet murmur immediately upon placing the
stethoscope on the client's chest. The nurse interprets this as which grade?
A) 1
B) 2
C) 3
D) 4
B) 2
3. A group of students is reviewing the structures of the heart, noting that the thickest layer of
the heart is made up of contractile muscle cells. The students are correct in identifying this layer
as which of the following?
A) Myocardium
, B) Epicardium
C) Endocardium
D) Pericardium
A) Myocardium
4. A nurse is reviewing the electrical conduction system of the heart in preparation for assessing
a client with a conduction problem. The nurse should be aware that the electrical signal
originates in which of the following locations?
A) Bundle of His
B) Purkinje fibers
C) Sinoatrial node
D) AV node
C) Sinoatrial node
5. The nurse is analyzing the data from the assessment of a client's heart and neck vessels. The
client's first heart sound corresponds with what event in the cardiac cycle?
A) Isometric contraction
B) Closure of the semilunar valves
C) Beginning of diastole
D) Closure of the atrioventricular valves
D) Closure of the atrioventricular valves
6. The nurse is assessing a client who is in uncompensated right-sided heart failure. What
assessment finding should the nurse anticipate?
A) Increased jugular venous pressure
B) Bradycardia
C) Decreased blood pressure
D) Dysrhythmias
A) Increased jugular venous pressure
7. The nurse is assessing a client with a cardiac condition who complains of not sleeping well
and of having to get up frequently at night to urinate. The nurse should recognize what
implication of this statement?
A) The client may have developed a cardiac conduction problem.
B) The client may be experiencing symptoms of heart failure.
C) The client's cardiac problem is being adequately compensated for.
D) The client may be at increased risk for myocardial infarction.
B) The client may be experiencing symptoms of heart failure.