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. When assessing a client's blood pressure and determining an auscultatory gap, which action should the nurse implement?

Correct answer: A

Rationale: When an auscultatory gap is present, comparing the palpated systolic blood pressure with the auscultated pressure is crucial. This helps to accurately measure blood pressure and detect any discrepancies caused by the gap. Assessing for lightheadedness upon standing (choice B) is unrelated to addressing an auscultatory gap. Checking the consistency between automated and manual blood pressure readings (choice C) is important for validation but not specifically for managing an auscultatory gap. Observing blood pressure changes between lying and sitting positions (choice D) is relevant for orthostatic hypotension assessment but not for dealing with an auscultatory gap.

3. What nursing intervention is most important to implement after a client has completed a myelogram?

Correct answer: C

Rationale: The correct answer is C: Neurovascular assessment of the lower extremities. After a myelogram, it is crucial to monitor the neurovascular status to detect any signs of complications such as impaired circulation or nerve damage. This assessment helps in identifying early signs of vascular compromise or neurological deficits. Choices A, B, and D are not the priority after a myelogram. Lie-sit-stand blood pressure measurement is not directly related to post-myelogram care. Abdominal assessment and skin assessment are important but not the priority immediately after this procedure.

4. While flushing the proximal port of a triple lumen central venous catheter with heparin solution, the nurse meets resistance. What action should the nurse take?

Correct answer: B

Rationale: When encountering resistance while flushing a central venous catheter, it is crucial to contact the healthcare provider regarding the need for a chest x-ray. This resistance may indicate a blockage within the catheter, a kink, or other issues that could compromise the integrity of the catheter or pose a risk to the patient. It is essential to assess the situation through imaging to determine the appropriate course of action. Option A is incorrect because applying direct pressure could cause damage to the catheter or dislodge any potential blockage. Option C is incorrect as labeling the port as obstructed without further assessment may delay necessary interventions. Option D is incorrect as removing the catheter without proper evaluation can lead to complications and should only be done under the guidance of a healthcare provider.

5. A client with a history of myocardial infarction (MI) is receiving a beta-blocker medication. What is the most important outcome for the nurse to monitor?

Correct answer: A

Rationale: The correct answer is A: Heart rate and blood pressure. When a client with a history of myocardial infarction (MI) is on a beta-blocker medication, monitoring heart rate and blood pressure is crucial. Beta-blockers lower heart rate and blood pressure, so monitoring these parameters helps assess the medication's effectiveness and prevent complications like bradycardia or hypotension. Choices B, C, and D are not the most important outcomes to monitor in this scenario. Blood glucose levels are typically monitored in clients with diabetes or when using medications that affect glucose levels. Respiratory rate is important in assessing respiratory function and oxygenation, while liver function tests are more relevant when monitoring the impact of medications on liver health.

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