LPN Fundamentals Practice Questions

Correct Answer: C

Rationale: In acute renal failure, the kidneys are unable to excrete potassium efficiently, which can lead to hyperkalemia. As a result, an increased potassium level is a common finding in clients with acute renal failure. Hyperkalemia can have serious cardiac effects, making it essential for healthcare providers to monitor and manage potassium levels closely in clients with renal impairment. Choices A, B, and D are incorrect because in acute renal failure, blood urea nitrogen (BUN) and creatinine levels typically rise due to decreased renal function. Calcium levels are more likely to be decreased in acute renal failure due to impaired activation of vitamin D and subsequent decreased calcium absorption.

Correct Answer: C

Rationale: The correct instruction for the nurse to include during postoperative teaching following a hip arthroplasty is to 'Place a pillow between your legs when turning.' Placing a pillow between the legs when turning is crucial as it helps prevent dislocation of the hip prosthesis. This position aids in maintaining proper alignment and stability, thereby reducing the risk of complications after hip arthroplasty surgery. Choices A, B, and D are incorrect because they do not directly address the specific action needed to protect the hip prosthesis and prevent complications.

Correct Answer: B

Rationale: The correct answer is B. Administering an intramuscular injection at a 90� angle is essential for proper medication delivery into the muscle tissue. Injecting at a 45� angle is incorrect for intramuscular injections and is typically used for subcutaneous injections where the needle is inserted into the fatty tissue layer beneath the skin. Choice A is correct as selecting a 25-gauge needle is appropriate for an intramuscular injection. Choice C is also correct as the ventrogluteal site is a suitable site for intramuscular injections. Choice D is correct as aspirating for blood return is a necessary step to ensure the needle is not in a blood vessel before injecting the medication.

Correct Answer: A

Rationale: The correct statement to include in teaching a client with type 1 diabetes mellitus is that they can still eat sugar, but they must count it in their carbohydrate intake for the day. This is important because clients with type 1 diabetes need to manage their blood glucose levels by calculating their carbohydrate intake, including sugars. Choice B is incorrect because total avoidance of sugar is not necessary, but monitoring and including it in the carbohydrate count is essential. Choice C is incorrect as proteins and fats can also affect blood glucose levels and should be consumed in moderation. Choice D is incorrect since oral hypoglycemic agents are not used in type 1 diabetes mellitus, as insulin replacement therapy is the mainstay of treatment.

Correct Answer: D

Rationale: During an abdominal assessment, the correct sequence of steps is inspection, auscultation, percussion, and palpation. This sequence is followed to prevent altering bowel sounds. Inspection allows for visual observation, followed by auscultation to listen for bowel sounds without causing disturbance, percussion to assess for tympany or dullness, and finally palpation to feel for any abnormalities or tenderness. Choice A is incorrect because palpation should come after percussion. Choice B is incorrect as auscultation should be performed after inspection. Choice C is incorrect because palpation should be the final step after percussion.