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 young female client prescribed amoxicillin (Amoxil) for a urinary tract infection is being taught by a nurse. Which statement should the nurse include in this client’s teaching?

• A. Use a second form of birth control while taking this medication.
• B. You will experience increased menstrual bleeding while on this medication.
• C. You may experience an irregular heartbeat while on this medication.
• D. Watch for blood in your urine while taking this drug.

Correct answer: A

Rationale: The correct statement for the nurse to include in the teaching is to advise the client to use a second form of birth control while taking amoxicillin. Penicillin, like amoxicillin, may reduce the effectiveness of estrogen-containing contraceptives, making it important to use additional contraceptive measures. The incorrect choices are B, C, and D. Increased menstrual bleeding, irregular heartbeat, or blood in the urine are not common side effects associated with amoxicillin use for a urinary tract infection.

3. A client is being discharged after lithotripsy for a urinary calculus. Which statements should the nurse include in the discharge teaching? (Select all that apply.)

• A. Finish the prescribed antibiotic even if you are feeling better.
• B. Drink at least 3 liters of fluid each day.
• C. The bruising on your back may take several weeks to resolve.
• D. All of the above

Correct answer: D

Rationale: After lithotripsy for a urinary calculus, it is important for the client to complete the prescribed antibiotic course to prevent urinary tract infections. Drinking at least 3 liters of fluid daily helps dilute stone-forming crystals, prevent dehydration, and promote urine flow. Bruising on the back may occur after the procedure and can take several weeks to resolve. Additionally, the client may experience blood in the urine for several days post-procedure. Reporting any pain, fever, chills, or urination difficulties to the healthcare provider is essential, as these symptoms could indicate infection or stone formation. Choice D is correct as all the statements are appropriate for the client's discharge teaching. Choices A, B, and C are individually correct based on the rationale provided, making D the correct answer.

4. A client with diabetes mellitus who is taking NPH insulin (Humulin N) in the evening is most likely to become hypoglycemic shortly after midnight because this insulin peaks in 6 to 8 hours. What intervention should the nurse recommend to help prevent hypoglycemia while the client is sleeping?

• A. Eat a bedtime snack.
• B. Avoid physical activity.
• C. Take half the usual dose of insulin.
• D. Discontinue insulin until the next meal.

Correct answer: A

Rationale: Eating a bedtime snack is the most appropriate intervention to prevent hypoglycemia during the night when NPH insulin peaks. This snack helps maintain blood glucose levels and counteracts the risk of hypoglycemia. Avoiding physical activity is not recommended as it can further lower blood sugar levels. Taking half the usual dose of insulin can lead to inadequate control of blood sugar levels. Discontinuing insulin until the next meal can result in uncontrolled hyperglycemia, especially during the peak action of NPH insulin.

5. A nurse reviews a client’s urinalysis report. Which finding does the nurse recognize as abnormal?

• A. pH of 6.0
• B. An absence of protein
• C. The presence of ketones
• D. Specific gravity of 1.018

Correct answer: C

Rationale: The correct answer is C. The presence of ketones in the urine is abnormal. Ketones in the urine may indicate a state of ketosis, which is commonly seen in uncontrolled diabetes, fasting, or a low-carbohydrate diet. A normal pH range of urine is 4.5 to 7.8, making a pH of 6.0 within the normal range. An absence of protein is a normal finding in urine, as proteinuria (presence of protein) is abnormal. A specific gravity of 1.018 falls within the normal range of 1.016 to 1.022. Therefore, the presence of ketones is the abnormal finding in this scenario.

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