#1
Which valve closure produces the S1 heart sound?
Mitral valve closure
ExplanationS1 is produced by closure of the mitral and tricuspid valves.
#2
Which heart sound is associated with the closure of the semilunar valves?
S2
ExplanationS2 is produced by closure of the semilunar valves, aortic and pulmonary.
#3
What is the primary cause of mitral valve prolapse (MVP)?
Connective tissue disorders
ExplanationMVP is primarily caused by connective tissue disorders.
#4
Which heart sound is often associated with conditions such as myocardial infarction and heart failure?
S3
ExplanationS3 is associated with conditions like myocardial infarction and heart failure.
#5
Which heart sound is associated with the atrial contraction during late diastole?
S4
ExplanationS4 occurs during atrial contraction in late diastole.
#6
Which of the following conditions is most likely to cause a split S2 heart sound?
Right bundle branch block
ExplanationSplit S2 is common in conditions delaying closure of the pulmonary valve, like right bundle branch block.
#7
Which maneuver is typically used to accentuate the intensity of mitral valve prolapse (MVP) clicks?
Valsalva maneuver
ExplanationValsalva maneuver decreases ventricular volume, enhancing MVP clicks.
#8
What is the primary cause of aortic regurgitation?
Aortic dissection
ExplanationAortic regurgitation commonly results from aortic dissection.
#9
Which valvular defect typically results in a diastolic murmur?
Mitral regurgitation
ExplanationMitral regurgitation results in a murmur during diastole.
#10
Which condition is characterized by a 'machine-like' continuous murmur?
Patent ductus arteriosus (PDA)
ExplanationPDA is characterized by a continuous 'machine-like' murmur.
#11
Which maneuver is used to differentiate innocent murmurs from pathological murmurs?
Squatting maneuver
ExplanationSquatting increases venous return, reducing innocent murmurs.
#12
Which of the following murmurs is commonly associated with hypertrophic cardiomyopathy?
Holo-systolic murmur
ExplanationHolo-systolic murmurs are typical in hypertrophic cardiomyopathy.
#13
In which cardiac cycle phase is the aortic valve open?
Ejection
ExplanationAortic valve is open during ejection phase when blood is pumped out.
#14
Which heart sound is often described as a 'gallop' rhythm?
S3
ExplanationS3 is often described as a 'gallop' rhythm and is heard in heart failure.
#15
Which of the following is a characteristic feature of a pericardial friction rub?
Diminishes with sitting forward
ExplanationPericardial friction rubs diminish with the patient leaning forward.
#16
Which heart sound corresponds to atrial contraction?
S3
ExplanationS3 corresponds to atrial contraction during late diastole.
#17
What is the characteristic feature of an ejection systolic murmur?
Has a crescendo-decrescendo pattern
ExplanationEjection systolic murmurs have a crescendo-decrescendo pattern.