A nurse is preparing to administer lorazepam 0.044 mg/kg IV bolus to a client who weighs 50 kg (110 lb). The amount available is lorazepam injection 4 mg/mL How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.6"]
Step 1 is to calculate the total dose of lorazepam required based on the client’s weight.
0.044 mg/kg × 50 kg = 2.2 mg
Result after Step 1 = 2.2 mg
Step 2 is to identify the concentration of the medication available.
The concentration is 4 mg per 1 mL.
Step 3 is to calculate the volume needed to deliver the prescribed dose.
2.2 mg ÷ 4 mg/mL = 0.55 mL
Result after Step 3 = 0.55 mL
Step 4 is to round the calculated volume to the nearest tenth as instructed.
0.55 mL rounds to 0.6 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
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Correct Answer is B
Explanation
Choice A reason: Incisional drainage positive for glucose indicates cerebrospinal fluid leakage, which is a complication, not an expected finding. This requires immediate intervention.
Choice B reason: Irritability is expected in infants postoperatively and can indicate increased intracranial pressure or discomfort. It is a common finding after shunt placement and requires monitoring.
Choice C reason: Drowsiness may occur but is concerning if excessive, as it can indicate shunt malfunction or increased intracranial pressure. It is not considered a normal expected finding.
Choice D reason: Decreased head circumference is not expected immediately after shunt placement. Head growth should stabilize over time, but a sudden decrease would be abnormal.
Correct Answer is C
Explanation
Choice A reason: Celiac disease is an autoimmune condition triggered by gluten ingestion. It affects nutrient absorption but does not directly increase aspiration risk during enteral feedings.
Choice B reason: Increased gastric motility actually reduces aspiration risk because food moves more quickly through the stomach. Delayed gastric emptying, not increased motility, is associated with aspiration.
Choice C reason: Parkinson’s disease is the correct answer because it impairs swallowing and gag reflexes due to neuromuscular dysfunction. Clients with Parkinson’s are at high risk for aspiration when receiving enteral feedings, as they may not adequately protect their airway.
Choice D reason: Systemic lupus erythematosus affects multiple organ systems but does not directly impair swallowing or airway protection. It is not a primary risk factor for aspiration during tube feedings.
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