Answer to Question 1
A
A third heart sound, commonly referred to as S3, is heard with heart failure or volume overload. S4 heart sound may be auscultated with coronary artery disease, hypertension, and pulmonic stenosis.
Answer to Question 2
C
A small pulsation at the fifth intercostal space midclavicular line is known as the point of maximal impulse (PMI) and is considered a normal finding. A thrill is a vibration or pulsation palpated in any area except the PMI. A murmur occurs when structural defects in the heart's chambers or valves cause turbulent blood flow. A heave, which is a visible palpation, is associated with an enlarged ventricle.