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15 Questions

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Heart Sounds II: Physiology Department

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Questions and Answers

What is the most common cause of chronic mitral regurgitation?

Pulmonary hypertension

Right ventricular hypertrophy

Chordae tendinae rupture

Mitral valve prolapse (correct)

In younger people with mitral valve prolapse, what is the usual cause?

Acquired mitral valve disease

Excess valve leaflet material (correct)

Congenital septal defects

Rupture of chordae tendinae

What can worsen regurgitation in individuals with mitral valve prolapse?

Septal defects

Lengthening and rupture of chordae tendinae (correct)

Pulmonary hypertension

Right ventricular hypertrophy

What may produce murmurs in individuals with septal defects?

Flow of blood through septal defects Signup and view all the answers

What is the likely result when a septal defect is not accompanied by other abnormalities?

Blood flow from right to left side Signup and view all the answers

What is the consequence of blood accumulation in the left atrium?

Pulmonary hypertension Signup and view all the answers

What happens to compensate for increased pulmonary pressure?

Right ventricular hypertrophy Signup and view all the answers

What can lead to pulmonary hypertension and edema?

Right ventricular hypertrophy Signup and view all the answers

What produces the 'lub' sound of the heart?

Closing of the AV valves Signup and view all the answers

When is the 'dub' sound of the heart heard?

During diastole Signup and view all the answers

What is the most common cause of murmurs in the heart?

Defective heart valves Signup and view all the answers

What can cause defective heart valves?

All of the above Signup and view all the answers

In which phase do the semilunar valves close to produce the 'dub' sound?

Isovolumetric relaxation Signup and view all the answers

What happens in mitral stenosis?

The mitral valve becomes thickened and calcified. Signup and view all the answers

What causes damage to the heart valves in rheumatic endocarditis?

Antibodies made in response to an infection by streptococcus bacteria Signup and view all the answers