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The staff nurse in a regional hospital is aware that a dose of parenteral ampicillin must be administered within how many hours after it has been mixed?
- A. 1 hour
- B. 4 hours
- C. 2 hours
- D. 8 hours
Correct Answer: B
Rationale: The correct answer is B (4 hours) because parenteral ampicillin should be administered within 1 hour of mixing. This is crucial to ensure efficacy and prevent bacterial growth in the solution. Choice A (1 hour) is incorrect because it does not allow enough time for administration after mixing. Choice C (2 hours) is also incorrect as it exceeds the recommended time limit. Choice D (8 hours) is incorrect as it exceeds the safe window for administration post-mixing, increasing the risk of bacterial contamination and reduced effectiveness. Thus, the optimal timeframe for administering parenteral ampicillin after mixing is within 4 hours to maintain its therapeutic benefits.
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The nurse is caring for a client who’s hypoglycemic. This client will have a blood glucose level:
- A. Below 70mg/dl
- B. Between 120 and 180mg/dl
- C. Between 70 and 120mg/dl
- D. Over 180mg/dl
Correct Answer: A
Rationale: The correct answer is A: Below 70mg/dl. Hypoglycemia is defined as a blood glucose level below 70mg/dl. Symptoms of hypoglycemia include confusion, shakiness, and sweating. Treating hypoglycemia involves administering fast-acting carbohydrates. Choices B, C, and D are incorrect because they describe blood glucose levels that are within the normal or hyperglycemic range, which are not indicative of hypoglycemia. It is essential for the nurse to recognize and promptly address hypoglycemia to prevent serious complications.
A surgical intervention that can cause substantial remission of myasthenia gravis is:
- A. Esophagostomy
- B. Thymectomy
- C. Myomectomy
- D. Spleenectomy
Correct Answer: B
Rationale: The correct answer is B: Thymectomy. Thymectomy involves the surgical removal of the thymus gland, which is often abnormal in individuals with myasthenia gravis. The thymus plays a role in the development of the immune system and can contribute to the autoimmune response seen in myasthenia gravis. By removing the thymus gland, the autoimmune response may be reduced, leading to substantial remission of symptoms.
Choice A, Esophagostomy, involves creating a surgical opening into the esophagus and is not a treatment for myasthenia gravis. Choice C, Myomectomy, is the surgical removal of uterine fibroids and is unrelated to myasthenia gravis. Choice D, Spleenectomy, is the removal of the spleen and is not a standard treatment for myasthenia gravis.
A patient expresses fear of going home and being alone. Vital signs are stable and the incision is nearly completely healed. What can the nurse infer from the subjective data?
- A. The patient can now perform the dressing changes without help.
- B. The patient can begin retaking all of the previous medications.
- C. The patient is apprehensive about discharge.
- D. The patient’s surgery was not successful.
Correct Answer: C
Rationale: The correct answer is C because the patient expressing fear of going home and being alone indicates apprehension about discharge. This inference is based on the patient's subjective feelings and concerns, which are important to address for a safe discharge. Choices A and B are incorrect as they assume the patient's readiness for independent tasks without considering their emotional state. Choice D is incorrect as there is no objective data provided to support the assumption that the surgery was not successful. It is important for the nurse to acknowledge and address the patient's emotional needs before discharge.
A nurse is directed to administer a hypotonic intravenous solution. The nurse expects that compensatory mechanisms associated with hypovolemia would cause all of the following symptoms except:
- A. O.45% sodium chloride
- B. 5% dextrose in water
- C. O.90% sodium chloride
- D. 5% dextrose in normal saline solution
Correct Answer: C
Rationale: The correct answer is C: 0.90% sodium chloride. When administering a hypotonic solution like 0.45% sodium chloride or 5% dextrose in water, water moves into the cells causing them to swell. This can exacerbate symptoms of hypovolemia such as low blood pressure and decreased perfusion. However, 0.90% sodium chloride is an isotonic solution and will not further exacerbate hypovolemic symptoms. Choices A, B, and D are hypotonic solutions that can worsen hypovolemic symptoms by causing cellular swelling.
When the LPN is assisting the patient to use an incentive spirometer, which of the following actions by the patient indicates that the patient needs further teaching on how to use the spirometer?
- A. Taking two normal breaths before use.
- B. Sitting upright before use.
- C. Inhaling deeply to reach target.
- D. Exhaling deeply to reach target.
Correct Answer: D
Rationale: The correct answer is D because exhaling deeply before using the spirometer is incorrect. The purpose of the incentive spirometer is to encourage deep inhalation to improve lung function. Exhaling deeply before using the spirometer goes against this goal and may hinder the effectiveness of the device. Choices A, B, and C are all correct actions when using the spirometer. Taking two normal breaths helps to prepare the lungs, sitting upright optimizes lung expansion, and inhaling deeply to reach the target helps to improve lung ventilation.