Nursing Elites

1. Which of the following is not a function of parathyroid hormone?

• A. moving calcium from bones to the bloodstream
• B. inhibiting renal tubular reabsorption of phosphorus
• C. promoting renal tubular reabsorption of calcium
• D. enhancing renal production of vitamin D metabolites

Correct answer: B

Rationale: The correct answer is 'inhibiting renal tubular reabsorption of phosphorus.' Parathyroid hormone actually inhibits renal tubular reabsorption of phosphorus, making this choice the opposite of its function. Parathyroid hormone functions to move calcium from bones to the bloodstream (Choice A), promote renal tubular reabsorption of calcium (Choice C), and enhance renal production of vitamin D metabolites (Choice D). Therefore, all other choices are functions of parathyroid hormone except for the inhibition of phosphorus reabsorption.

2. A client with a closed chest tube drainage system accidentally disconnects the chest tube while being turned by the nurse. What should the nurse do first?

• A. Submerge the end of the chest tube in a bottle of sterile water
• B. Clamp the chest tube with a Kelly clamp
• C. Call the health care provider
• D. Instruct the client to inhale and hold his breath

Correct answer: A

Rationale: When a chest tube becomes disconnected, the priority action is to immediately reattach it to the drainage system or submerge the end in a bottle of sterile water or saline solution to reestablish a water seal. This helps prevent air from entering the pleural space and causing complications. Calling the health care provider is important but not the first action in this emergency. Instructing the client to inhale and hold his breath should be avoided as it can introduce atmospheric air into the pleural space, leading to potential issues. Clamping the chest tube is generally contraindicated, especially in cases of residual air leak or pneumothorax, as it may result in a tension pneumothorax by preventing air from escaping.

3. The LPN is caring for a client with an NG tube, and the RN administers evening medications through the NG tube. The client asks if he can lie down when the nurse leaves the room. What is the most appropriate response?

• A. You can lie down in 1 hour.
• B. You can lie down in 30 minutes if your NG residual is below 50 mL.
• C. You can lie down in about 30 minutes.
• D. Yes, feel free to lie down.

Correct answer: A

Rationale: After administering medication through an NG tube, the client should remain upright for 30 minutes to ensure proper absorption of the medications. Therefore, the most appropriate response is to advise the client to lie down in 1 hour. Choice B is incorrect because waiting only 30 minutes may not provide sufficient time for the medications to be fully absorbed, as the recommended time is 30 minutes. Choice C is misleading as it incorrectly suggests that lying down in about 30 minutes is acceptable, which could compromise medication effectiveness. Choice D is incorrect as it does not provide accurate information regarding the appropriate timing for lying down after NG tube medication administration, potentially leading to decreased medication absorption.

4. All of the following are causes of vaginal bleeding in late pregnancy except:

• A. Placenta previa.
• B. Eclampsia.
• C. Abruptio placentae.
• D. Uterine rupture.

Correct answer: B

Rationale: The correct answer is B: Eclampsia. Eclampsia is a disorder of pregnancy characterized by hypertension, proteinuria, and edema. This condition can cause seizures and/or coma but does not typically present with vaginal bleeding. Choices A, C, and D are abnormal conditions that can cause bleeding, particularly in the third trimester. Placenta previa (choice A) is a condition where the placenta partially or completely covers the cervix, leading to vaginal bleeding. Abruptio placentae (choice C) is the premature separation of the placenta from the uterine wall, causing vaginal bleeding. Uterine rupture (choice D) is a serious obstetrical emergency where the uterus tears during pregnancy or childbirth, resulting in severe bleeding.

5. For which condition might a client's antidiuretic hormone (ADH) level be increased?

• A. diabetes mellitus
• B. diabetes insipidus
• C. hypothyroidism
• D. hyperthyroidism

Correct answer: B

Rationale: The correct answer is diabetes insipidus. In this condition, the client's ADH level is increased. Diabetes insipidus is characterized by the inability of the kidneys to conserve water due to either inadequate secretion of ADH (central diabetes insipidus) or the kidneys' inability to respond to ADH (nephrogenic diabetes insipidus). Choices A, C, and D are incorrect. In diabetes mellitus, ADH levels are typically normal or elevated in response to high blood sugar levels. Hypothyroidism is not directly related to ADH secretion. In hyperthyroidism, ADH levels are usually normal or decreased.

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