Nursing Elites

1. One of the major functions of the kidneys in maintaining normal fluid balance is:

• A. the manufacture of antidiuretic hormone.
• B. the regulation of calcium and phosphate balance.
• C. the regulation of the pH of the extracellular fluid.
• D. the control of aldosterone levels.

Correct answer: C

Rationale: The correct answer is 'the regulation of the pH of the extracellular fluid.' The kidneys play a crucial role in maintaining normal fluid balance by regulating extracellular fluid and osmolarity through selective retention and excretion of fluids. Additionally, they regulate the pH of the extracellular fluid by retaining hydrogen ions and excreting metabolic wastes and toxic substances. Choice A is incorrect because antidiuretic hormone (ADH) is manufactured by the pituitary gland, not the kidneys. Choice B is incorrect as the regulation of calcium and phosphate balance is primarily controlled by the parathyroid gland. Choice D is incorrect as aldosterone levels are controlled by the adrenal glands, not the kidneys.

2. A nurse is covering a pediatric unit and is responsible for a 15-year-old male patient on the floor. The mother of the child states, "I think my son is sexually interested in girls."? The most appropriate course of action for the nurse is to respond by stating:

• A. "I will talk to the doctor about it."?
• B. "Has this been going on for a while?"?
• C. "How do you know this?"?
• D. "Teenagers often exhibit signs of sexual interest in females."?

Correct answer: D

Rationale: The most appropriate response for the nurse in this situation is to acknowledge that teenagers often exhibit signs of sexual interest in females. This response normalizes the mother's concern and provides reassurance that such behavior is typical during adolescence. Option A deflects the conversation to the doctor without addressing the mother's concern directly. Option B focuses on the duration rather than addressing the mother's statement. Option C may come off as defensive or dismissive, questioning the mother's observation. Therefore, the best response is to acknowledge the normalcy of teenage behavior regarding sexual interest.

3. A healthcare professional is reviewing a patient's ECG report. The patient exhibits a flat T wave, depressed ST segment, and short QT interval. Which of the following medications can cause all of the above effects?

• A. Morphine
• B. Atropine
• C. Procardia
• D. Digitalis

Correct answer: D

Rationale: The correct answer is Digitalis. Digitalis is known to cause a flat T wave, depressed ST segment, and a short QT interval on an ECG report. These ECG changes are characteristic of digitalis toxicity. Morphine is not typically associated with these ECG changes. Atropine is more commonly linked to increasing heart rate rather than causing these specific ECG abnormalities. Procardia is a calcium channel blocker that does not typically produce the described ECG findings. Therefore, Digitalis is the most likely medication causing these effects in the patient.

4. What is the best lab test to diagnose disseminated intravascular coagulation (DIC)?

• A. platelet count
• B. prothrombin time (PT)
• C. partial thromboplastin time (PTT)
• D. D-dimer

Correct answer: D

Rationale: The best lab test to diagnose disseminated intravascular coagulation (DIC) is the D-dimer test. In DIC, numerous small clots form throughout the body and are rapidly broken down. D-dimer measures a specific fibrin split product and is the most specific test for DIC. Platelet count (Choice A) is decreased in DIC due to consumption, but it is not specific for diagnosing DIC. Prothrombin time (PT - Choice B) and partial thromboplastin time (PTT - Choice C) are both elevated in DIC because clotting factors have been used up, but they are not specific for DIC as they can be elevated in other conditions as well.

5. Assessment of the client with an arteriovenous fistula for hemodialysis should include:

• A. inspection for visible pulsations.
• B. palpation of thrill.
• C. percussion for dullness.
• D. auscultation of blood pressure.

Correct answer: B

Rationale: The correct answer is to palpate for a thrill. A thrill should be present in a functioning arteriovenous fistula (AVF) and indicates good blood flow. The client should be educated to check for this sensation daily at home to monitor the AVF's patency. Visible pulsations are not typically observed in an AVF. Percussion for dullness does not provide relevant information about the AVF. Auscultation of blood pressure is not a standard practice in assessing an AVF. However, auscultation of the AVF for a bruit, a sound indicating turbulent blood flow, is crucial in evaluating the AVF's patency.

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