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Through which structure does blood flow from the heart to the lungs in the pulmonary circulation?

Left ventricle

Pulmonary artery

Left atrium

Pulmonary veins

Answer and Explanation

The Correct Answer is B

Choice A reason: The left ventricle pumps oxygenated blood into the aorta and then to the rest of the body, not

directly to the lungs.

Choice B reason: The pulmonary artery is the correct answer because it carries deoxygenated blood from the right

ventricle of the heart to the lungs for oxygenation.

Choice C reason: The left atrium receives oxygenated blood from the lungs through the pulmonary veins, so it is not

involved in sending blood to the lungs.

Choice D reason: The pulmonary veins carry oxygenated blood from the lungs to the left atrium, not from the heart

to the lungs.

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Correct Answer is C

Explanation

Choice A reason: Aspirating fluid from the IV cannula is not recommended as it does not address the issue of infiltration or extravasation.

Choice B reason: Placing the affected extremity below the level of the client's heart could worsen the swelling and is
not recommended.

Choice C reason: Slowing the IV infusion is a correct immediate action to minimize further infiltration and should be done while further assessment and interventions are planned.

Choice D reason: Placing a pressure dressing over the IV site is not recommended as it may exacerbate the infiltration
and increase discomfort.

A. The reservoir bag on a nonrebreather mask should collapse with exhalation. B. A nonrebreather mask dries a patient's mucous membranes. C. A nonrebreather mask should fit snugly over a patient's face. D. Use a nonrebreather mask to deliver low-flow oxygen

Correct Answer is C

Explanation

Choice A reason: The reservoir bag on a nonrebreather mask should not collapse with exhalation. It is designed to maintain a continuous flow of oxygen and reserve a volume of oxygen for the patient to inhale with each breath.

Choice B reason: While high-flow oxygen can dry a patient's mucous membranes, a nonrebreather mask typically has a high oxygen flow rate, and humidification can be used to prevent drying.

Choice C reason: A nonrebreather mask must fit snugly over the patient's face to ensure that the highest concentration of oxygen is delivered and that there is minimal dilution with room air.

Choice D reason: A nonrebreather mask is used to deliver high-flow oxygen, not low-flow. It is designed to provide a high concentration of oxygen, typically around 60% to 90% FiO2.

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Through which structure does blood flow from the heart to the lungs in the pulmonary circulation?

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