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:
Pulmonary vein.
Pulmonary artery.
Aorta.
Inferior vena cava.
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
Applying a warm pack can increase swelling and pain, so it is not recommended.
Choice B rationale:
Removing the stinger by scraping it off with a knife blade can help to reduce the amount of venom that is released into the body.
Choice C rationale:
Applying a tourniquet can restrict blood flow and cause more harm than good.
Choice D rationale:
Sucking the wound can introduce bacteria and cause infection, so it is not recommended.
Correct Answer is B
Explanation
Choice A rationale:
While it’s important to start CPR as soon as possible, the AED should be attached as soon as it’s available.
Choice B rationale:
The American Heart Association recommends providing chest compressions at a rate of 100-120/min during CPR.
Choice C rationale:
Checking for a brachial pulse is not a priority during CPR. The focus should be on providing chest compressions and rescue breaths.
Choice D rationale:
The correct ratio of compressions to breaths during CPR is 30:2, not 50:2.
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