an 8 year old child who weighs 60 pounds receives an order for polycilin ampicillin suspension 25 mgkgday divided into a dose every 8 hours the medica
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HESI LPN

HESI CAT Exam Quizlet

1. An 8-year-old child who weighs 60 pounds receives an order for Polycilin (Ampicillin) suspension 25 mg/kg/day divided into a dose every 8 hours. The medication is labeled '125 mg/5 ml'. How many ml should the nurse administer per dose every 8 hours?

Correct answer: A

Rationale: Calculate the daily dose first: 60 pounds x 25 mg/kg = 1500 mg/day. Divide by 3 doses = 500 mg/dose. Convert to mL: (500 mg / 125 mg) x 5 ml = 20 ml. However, the question asks for the dose per administration every 8 hours, which is 1/3 of the daily dose. So, the correct calculation should be (20 ml / 3) = 6.67 ml, which rounds to 5 ml. Therefore, the correct answer is 5 ml. Choice B (10 ml) is incorrect because it doesn't consider the frequency of dosing. Choice C (15 ml) is incorrect as it overestimates the dose. Choice D (20 ml) is incorrect as it represents the total daily dose, not the dose per administration every 8 hours.

2. A male client with schizophrenia is jerking his neck and smacking his lips. Which finding indicates to the nurse that he is experiencing an irreversible side effect of antipsychotic agents?

Correct answer: B

Rationale: The correct answer is B: Worming movements of the tongue. Worming movements of the tongue, known as tardive dyskinesia, are an irreversible side effect of antipsychotic medications. Tardive dyskinesia is characterized by involuntary, repetitive movements of the tongue, lips, face, trunk, and extremities. Cramping muscular pain (Choice A) is more indicative of dystonia, an extrapyramidal side effect that can be treated effectively with antiparkinsonian medications. Decreased tendon reflexes (Choice C) are not typically associated with irreversible side effects of antipsychotic agents. Dry oral mucous membranes (Choice D) are not specific to irreversible side effects of antipsychotic medications.

3. After assessing an older adult with a suspected cerebrovascular accident (CVA), the nurse documents the client's right upper arm weakness and slurred speech. When the client complains of a severe headache and nausea, and the neurological assessment remains unchanged, which action should the nurse implement first?

Correct answer: C

Rationale: In this scenario, the priority action for the nurse is to send the client for a computed tomography (CT) scan of the brain. A CT scan is crucial in assessing acute changes or bleeding that could influence treatment decisions in a suspected cerebrovascular accident (CVA). While addressing symptoms like headache and nausea is important, ruling out acute changes in the brain with a CT scan takes precedence in this situation. Collecting blood for coagulation times may be necessary but is not the initial priority. Obtaining a history of medication use, recent surgery, or injury is also important but not the first action to take when a CVA is suspected.

4. A client is admitted with acute low back pain. What action should the nurse implement to promote comfort?

Correct answer: C

Rationale: Positioning the client in semi-Fowler's with the knees flexed is the most appropriate action to promote comfort in a client with acute low back pain. This position helps alleviate low back pain by reducing the pressure on the spine and supporting its natural curvature. Ambulating with a walker could strain the back, performing abdominal curls may exacerbate the pain, and straight leg raises while lying supine could cause further discomfort. Therefore, only positioning the client in semi-Fowler's with the knees flexed is the correct choice for promoting comfort in this scenario.

5. A client presents to the healthcare provider with fatigue, poor appetite, general malaise, and vague joint pain that improves mid-morning. The client has been using over-the-counter ibuprofen for several months. The healthcare provider makes an initial diagnosis of rheumatoid arthritis (RA). Which laboratory test should the nurse report to the healthcare provider?

Correct answer: A

Rationale: The correct answer is A: Sedimentation rate. Sedimentation rate, Anti–CCP antibodies, and C-reactive protein are commonly used laboratory tests to indicate inflammation and help diagnose rheumatoid arthritis. An elevated sedimentation rate is a nonspecific indicator of inflammation in the body, which is often seen in RA. White blood cell count is not specific for RA and is not typically significant in the diagnosis. Anti–CCP antibodies are specific to RA and are useful in confirming the diagnosis. Activated Clotting Time is not relevant to the diagnosis of rheumatoid arthritis as it is not specific to this condition.

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