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 client tells the clinic nurse about experiencing burning on urination, and assessment reveals that the client had sexual intercourse four days ago with a person who was casually met. Which action should the nurse implement?

• A. Observe the perineal area for a chancroid-like lesion
• B. Obtain a specimen of urethral drainage for culture
• C. Assess for perineal itching, erythema, and excoriation
• D. Identify all sexual partners in the last four days

Correct answer: B

Rationale: Obtaining a urethral drainage specimen for culture is crucial in diagnosing a potential sexually transmitted infection (STI) in this client. While assessing for perineal symptoms like itching, erythema, and excoriation (Choice C) may provide additional information, obtaining a culture is more definitive. Observing for a chancroid-like lesion (Choice A) is not as pertinent as obtaining a culture for a broader diagnostic approach. Identifying all sexual partners in the last four days (Choice D) is important for contact tracing but obtaining a specimen for culture takes priority in this scenario.

3. In a patient with chronic kidney disease, which of the following lab values would be expected?

• A. Elevated creatinine levels.
• B. Low hemoglobin levels.
• C. Elevated potassium levels.
• D. Low sodium levels.

Correct answer: A

Rationale: In chronic kidney disease, elevated creatinine levels are expected due to impaired kidney function. Creatinine is a waste product that is typically filtered out by the kidneys. With kidney disease, the clearance of creatinine is reduced, leading to its accumulation in the blood. Low hemoglobin levels (choice B) may be seen in chronic kidney disease due to decreased production of erythropoietin. However, elevated potassium levels (choice C) and low sodium levels (choice D) are more commonly associated with kidney dysfunction but are not as specific indicators of chronic kidney disease as elevated creatinine levels.

4. A client with chronic heart failure is being taught by a nurse about the importance of daily weights. Which of the following instructions should the nurse include?

• A. Weigh yourself at the same time every day.
• B. Use the same scale for weighing each time.
• C. Record your weight in a journal or log.
• D. Report any weight gain of more than 2 to 3 pounds in a day.

Correct answer: D

Rationale: The correct instruction for a client with chronic heart failure is to report any weight gain of more than 2 to 3 pounds in a day. This weight gain may indicate fluid retention, which is a critical sign of worsening heart failure. Weighing at the same time every day and using the same scale for consistency are good practices, but the crucial action is to promptly report significant weight gain, as stated in option D. Recording the weight in a journal or log can be helpful for tracking trends, but immediate reporting of weight gain is essential for timely intervention in heart failure management. Therefore, option D is the most appropriate instruction for this client.

5. To evaluate the positive effect of furosemide (Lasix) 40 mg/day in a client with chronic kidney disease (CKD), what is the best action for the nurse to take?

• A. Obtain daily weights of the client.
• B. Auscultate heart and breath sounds.
• C. Palpate the client’s abdomen.
• D. Assess the client’s diet history.

Correct answer: A

Rationale: The correct answer is A. Furosemide (Lasix) is a loop diuretic used to manage fluid overload and hypertension in clients with CKD. Monitoring daily weights is crucial as weight changes reflect fluid status. Each kilogram of weight change approximately corresponds to 1 liter of fluid retention or loss, making it essential for evaluating the medication's effectiveness. Auscultating heart and breath sounds is more relevant for heart failure cases with fluid retention, not specifically for assessing the effect of furosemide in CKD. Palpating the abdomen is not a direct indicator of furosemide's effectiveness; instead, assessing for edema would be appropriate. While assessing the client's diet history is important to monitor electrolyte balance due to potassium loss with furosemide, it does not directly evaluate the medication's efficacy.

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