which of the following organs of the digestive system has a primary function of absorption
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Nursing Elites

NCLEX-PN

NCLEX PN 2023 Quizlet

1. Which of the following organs of the digestive system has a primary function of absorption?

Correct answer: C

Rationale: The small intestine is the correct answer. It is the primary organ responsible for absorption in the digestive system. The stomach's primary function is to break down food through mechanical and chemical digestion. The pancreas produces digestive enzymes to aid in the breakdown of food. The gallbladder stores bile produced by the liver, which helps in the digestion of fats. However, neither the stomach, pancreas, nor gallbladder play the primary role of absorption in the digestive process, making them incorrect choices.

2. A client needs to rapidly achieve a therapeutic plasma drug concentration of a medication. Rather than wait for steady state to be achieved, the physician might order:

Correct answer: B

Rationale: To rapidly achieve a therapeutic plasma drug concentration, a loading or priming dose is ordered. This dose quickly establishes the desired drug level. It is calculated by multiplying the volume of distribution by the desired plasma drug concentration. A maintenance dose, like choice A, is used to maintain the therapeutic level after the loading dose. Waiting for steady state without a loading dose would take five drug half-lives. Choice C, a medication with no first-pass effect, does not directly address the need for rapid attainment of therapeutic levels. While intravenous administration (choice D) offers excellent bioavailability, a single dose by this route may not achieve the desired therapeutic plasma concentration as rapidly as a loading dose.

3. High uric acid levels can develop in clients who are receiving chemotherapy. This can be caused by:

Correct answer: B

Rationale: The correct answer is 'rapid cell catabolism.' During chemotherapy, rapid cell destruction occurs, leading to an increase in uric acid levels as a byproduct of cell breakdown. High uric acid levels are primarily a result of the rapid breakdown of cells during chemotherapy, not due to the kidneys' inability to excrete drug metabolites (Choice A). The prophylactic antibiotics given concurrently do not directly cause high uric acid levels (Choice C). The altered blood pH from the acidic nature of the drugs (Choice D) is not a direct cause of elevated uric acid levels; the main mechanism is the rapid cell catabolism that occurs during chemotherapy.

4. The client is preparing to undergo a total hysterectomy for advanced cervical cancer. The client is crying and says that she wants to have more children and is unsure if she should have the procedure. What should the nurse do?

Correct answer: A

Rationale: In this situation, the most appropriate action for the nurse is to allow the client to express her fears and concerns openly. By encouraging her to talk more with her physician, the nurse is promoting effective communication and ensuring that the client receives adequate information to make an informed decision. Option A is correct because it acknowledges the client's emotions and empowers her to seek clarification and support from her healthcare provider. Options B and C do not address the client's emotional needs or provide a solution to her concerns regarding fertility. Option D is not appropriate as it does not prioritize the client's emotional well-being and delays necessary medical treatment for advanced cervical cancer.

5. Which of the following should not be included in the teaching for clients who take oral iron preparations?

Correct answer: A

Rationale: The correct answer is to mix the liquid iron preparation with antacids to reduce GI distress. This statement is incorrect because iron should not be mixed with antacids as it can significantly reduce the absorption of iron. Choice B is a good recommendation as taking iron with meals can help reduce gastrointestinal distress. Choice C is also correct as liquid forms of iron should be taken with a straw to prevent the discoloration of tooth enamel. Choice D is incorrect as iron preparations can be taken with juice or water, but not with milk, as calcium in milk can inhibit iron absorption.

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