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. The nurse assesses a 5-year-old child who has been experiencing frequent headaches and vomiting. The nurse notices that the child is lethargic and has a positive Brudzinski sign. Which action should the nurse implement first?

Correct answer: D

Rationale: The correct action for the nurse to implement first is to notify the healthcare provider immediately. The presence of lethargy and a positive Brudzinski sign in a child experiencing frequent headaches and vomiting may indicate a serious condition like meningitis. Prompt notification of the healthcare provider is crucial for timely evaluation and initiation of appropriate treatment. Choice A is incorrect because while a neurological examination may be necessary, it is not the priority when a potentially serious condition like meningitis is suspected. Choice B is incorrect as measuring the child's head circumference is not the most immediate action to take in this situation. Choice C is also incorrect as checking the child's blood glucose level, although important in some cases, is not the priority when a child presents with symptoms suggestive of meningitis.

3. A client who is diagnosed with amyotrophic lateral sclerosis (ALS) is having difficulty swallowing and articulating words. Which intervention is most important to include in this client’s plan of care?

Correct answer: B

Rationale: The correct intervention for a client with ALS experiencing difficulty swallowing and articulating words is to sit upright and flex the chin forward while swallowing. This position helps manage dysphagia associated with ALS by facilitating the swallowing process. Encouraging speaking slowly and articulating words (Choice A) may be helpful for speech clarity but does not address the swallowing issue. Positioning a communication board (Choice C) would not directly address the swallowing difficulty. Providing feeding utensils with large grip handles (Choice D) is not the priority intervention for managing dysphagia in ALS.

4. When caring for a client with acute respiratory distress syndrome (ARDS), why does the nurse elevate the head of the bed 30 degrees?

Correct answer: A

Rationale: Elevating the head of the bed to 30 degrees is done to reduce abdominal pressure on the diaphragm, aiding in lung expansion and oxygenation. This position helps improve respiratory mechanics by allowing the diaphragm to move more effectively. Choice B is incorrect as elevating the head of the bed does not directly promote retraction of the intercostal accessory muscles of respiration. Choice C is incorrect because although elevating the head of the bed can assist with airway clearance, its primary purpose in ARDS is to decrease pressure on the diaphragm. Choice D is incorrect because reducing pressure on the medullary center is not the main goal of elevating the head of the bed; the focus is on enhancing lung function and oxygen exchange.

5. What information is most important for the nurse to provide to an adolescent female prescribed azithromycin for lower lobe pneumonia and recurrent chlamydia?

Correct answer: D

Rationale: The most important information for the nurse to provide to an adolescent female prescribed azithromycin for lower lobe pneumonia and recurrent chlamydia is to use two forms of contraception while taking this drug. Azithromycin can reduce the effectiveness of hormonal contraceptives, increasing the risk of pregnancy. It is crucial to convey this information to prevent unintended pregnancies. Option A is incorrect as the partner should be screened for chlamydia, not HIV, in this case. Option B is not the most important information to provide as liver dysfunction is a rare side effect of azithromycin. Option C is irrelevant as grapefruit juice does not interact with azithromycin. Therefore, the priority information to convey is the importance of using dual contraception to prevent pregnancy.

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