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When listening to heart sounds, which valve closures are heard best at the base of the heart. Select all that apply.

A.

pulmonic

B.

tricuspid

C.

aortic

D.

mitral

Question Solution

Correct Answer : A,C

A. Pulmonic valve closure is best heard at the base of the heart, near the second intercostal space at the left sternal border.

 

B. Tricuspid valve sounds are best heard at the lower left sternal border, near the apex rather than the base of the heart.

 

C. Aortic valve closure is also best heard at the base of the heart, near the second intercostal space on the right sternal border.

 

D. Mitral valve sounds are heard best at the apex of the heart, near the fifth intercostal space in the midclavicular line, not the base.


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View Related questions

Correct Answer is C

Explanation

A. The closure of the pulmonic and mitral valves corresponds to heart sound S1, not S2.

B. The tricuspid and mitral valves close with S1.

C. Heart sound S2 represents the closure of the aortic and pulmonic valves, signaling the end of systole and the beginning of diastole.

D. The mitral valve closes with S1, not S2.

E. The pulmonic and tricuspid valves do not correspond with S2.

Correct Answer is C

Explanation

A. Curved prongs fitting the nasal passages correctly is appropriate practice for comfort and effective delivery.

B. Padding pressure areas on the skin is a best practice to prevent skin breakdown and is indicative of proper care.

C. An oxygen flow rate of 10 L/min is excessively high for a nasal cannula, which typically accommodates 1-6 L/min; this indicates a need for further education on proper flow rates.

D. Posting clear no smoking and no open flame signs is essential for safety in oxygen therapy, reflecting good practice.

E. Proper adjustment of cannula tubing under the neck is necessary to ensure a secure fit without causing discomfort.

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