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A patient with CAD is asking the nurse about the mechanisms of the heart.
It would be appropriate for the nurse to respond that when the left ventricle contracts, it pushes blood through the semilunar valve to the:

A.

Pulmonary vein.

B.

Pulmonary artery.

C.

Aorta.

D.

Inferior vena cava.

Answer and Explanation

The Correct Answer is C

Choice A rationale:

This statement is incorrect because the pulmonary vein carries oxygenated blood from the lungs to the left atrium, not from the left ventricle.

Choice B rationale:

This statement is incorrect because the pulmonary artery carries deoxygenated blood from the right ventricle to the lungs, not from the left ventricle.

Choice C rationale:

This statement is correct. When the left ventricle contracts, it pushes blood through the aortic semilunar valve into the aorta, the largest artery in the body.

Choice D rationale:

This statement is incorrect because the inferior vena cava carries deoxygenated blood from the lower half of the body to the right atrium, not from the left ventricle.


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Related Questions

Correct Answer is ["1128"]

Explanation

The correct answer is 1420 mL.

Calculation:

Convert all intake to mL:

  • 4 oz soda = 118 mL
  • 12 oz water = 355 mL
  • 1 cup gelatin = 237 mL
  • 1/2 cup broth = 118 mL
  • 300 mL IV fluid = 300 mL

Add all intake: 118 mL + 355 mL + 237 mL + 118 mL + 300 mL = 1128 mL

Correct Answer is B

Explanation

Choice A rationale:

Discarding any partial doses found in the cabinet in the sharps container is not the correct procedure. Partial doses should be wasted in the presence of another nurse.

Choice B rationale:

Verifying that the amounts of each medication counted match the amounts on the inventory record is the correct procedure. This ensures accurate accounting of controlled substances.

Choice C rationale:

Setting aside any controlled substances the nurse plans to give during her shift is not the correct procedure. Medications should be removed from the secure cabinet as needed.

Choice D rationale:

Co-signing any notations of wasting controlled substances on the previous shift is not the correct procedure. Wasting should be witnessed and co-signed at the time it occurs.

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