Nursing Elites

1. The nurse is teaching a nursing student about the minimal effective concentration (MEC) of antibiotics. Which statement by the nursing student indicates understanding of this concept?

• A. A serum drug level greater than the MEC ensures that the drug is bacteriostatic.
• B. A serum drug level greater than the MEC broadens the spectrum of the drug.
• C. A serum drug level greater than the MEC helps eradicate bacterial infections.
• D. A serum drug level greater than the MEC increases the therapeutic index.

Correct answer: C

Rationale: The MEC is the minimum amount of drug needed to halt the growth of a microorganism. A level greater than the MEC helps eradicate infections. Drugs at or above the MEC are usually bactericidal, not bacteriostatic. Therefore, choice A is incorrect. Broadening the spectrum of a drug refers to its range of activity against different microorganisms, which is not directly related to MEC. Thus, choice B is incorrect. Increasing the therapeutic index involves maximizing the effectiveness of a drug while minimizing its toxicity, which is not specifically related to MEC. Therefore, choice D is also incorrect.

2. A healthcare professional is monitoring the respiratory status of a client who has just undergone surgery and is wearing a pulse oximeter. Which of the following coexisting problems is cause for the healthcare professional to suspect that the oxygen saturation readings are not entirely accurate?

• A. Infection
• B. Hypertension
• C. Low blood pressure
• D. Loss of cough reflex

Correct answer: C

Rationale: Low blood pressure (hypotension), shock, and the use of peripheral vasoconstricting medications can lead to inaccurate pulse oximetry readings due to impaired peripheral perfusion. Hypertension and infection are not typically associated with inaccurate pulse oximetry readings, while the loss of cough reflex does not directly affect oxygen saturation readings.

3. To reduce the risk of pulmonary complications for a client with ALS, which intervention should the nurse implement?

• A. Perform chest physiotherapy
• B. Teach the client breathing exercises
• C. Initiate passive range of motion exercises
• D. Establish a regular bladder routine

Correct answer: A

Rationale: Performing chest physiotherapy is the most appropriate intervention to reduce the risk of pulmonary complications in clients with ALS. Chest physiotherapy helps mobilize and clear respiratory secretions, improving lung function and reducing the risk of complications such as pneumonia. Teaching breathing exercises (Choice B) may be beneficial for some clients, but chest physiotherapy is more specifically targeted at managing pulmonary issues in ALS. Initiating passive range of motion exercises (Choice C) and establishing a regular bladder routine (Choice D) are important interventions in ALS care but are not directly related to reducing the risk of pulmonary complications.

4. A client recovering from a urologic procedure is being assessed by a nurse. Which assessment finding indicates an obstruction of urine flow?

• A. Severe pain
• B. Overflow incontinence
• C. Hypotension
• D. Blood-tinged urine

Correct answer: B

Rationale: The correct answer is 'B: Overflow incontinence.' The most common manifestation of urethral stricture after a urologic procedure is obstruction of urine flow. This obstruction can lead to overflow incontinence, which is the involuntary loss of urine when the bladder is distended. Severe pain is not typically associated with an obstruction of urine flow. Hypotension is unrelated to this issue. Blood-tinged urine is not a direct indication of an obstruction of urine flow but may indicate other conditions like trauma or infection.

5. The client with chronic kidney disease (CKD) is being taught about the necessary sodium restriction in the diet to prevent edema and hypertension. Which statement by the client indicates more teaching is needed?

• A. I am thrilled that I can continue to eat fast food.
• B. I will cut out bacon with my eggs every morning.
• C. My cooking style will change by not adding salt.
• D. I will probably lose weight by cutting out potato chips.

Correct answer: A

Rationale: Choice A, 'I am thrilled that I can continue to eat fast food,' indicates a lack of understanding as fast food is typically high in sodium, which is detrimental for individuals with CKD. The client should be advised to avoid fast food due to its high sodium content. Choices B, C, and D demonstrate a good understanding of the need for sodium restriction in the diet to prevent complications associated with CKD. Cutting out bacon, avoiding salt in cooking, and eliminating high-sodium snacks like potato chips are all positive steps towards managing CKD.

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