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: B

Rationale: The priority finding is the clear fluid leaking from the nose, which could indicate a cerebrospinal fluid leak and potential brain injury. This requires immediate attention to assess for possible cerebrospinal fluid leak, which is a serious complication of head trauma and needs prompt intervention to prevent further complications. While a Glasgow Coma Scale score of 13 may indicate a mild alteration in consciousness, it is not as urgent as assessing for a cerebrospinal fluid leak. Nausea and vomiting are common symptoms after head injuries but do not take precedence over assessing for a potential cerebrospinal fluid leak. Anisocoria (unequal pupils) is also important to note but is not as urgent as identifying a possible cerebrospinal fluid leak in this scenario.

Correct Answer: A

Rationale: The correct answer is A. Increasing intake of iodine-rich foods is beneficial for clients with hypothyroidism as iodine is essential for thyroid hormone synthesis. Adequate iodine intake helps to support thyroid function in individuals with hypothyroidism, making choice A the most appropriate response indicating an understanding of the dietary management for this condition. Choices B, C, and D are incorrect because decreasing iodine-rich foods, increasing potassium-rich foods, or decreasing sodium-rich foods are not the recommended dietary modifications for hypothyroidism. In fact, decreasing iodine-rich foods could exacerbate hypothyroidism due to the essential role of iodine in thyroid hormone production.

Correct Answer: A

Rationale: Hyperoxygenating the client before suctioning is crucial to prevent hypoxia during the procedure. By using a manual resuscitation bag with 100% oxygen, the nurse should provide several breaths to the client to ensure sufficient oxygenation before starting suctioning. This approach helps maintain oxygen levels and decreases the risk of hypoxia, which may arise when suctioning interrupts the normal respiratory process. Choices B, C, and D are incorrect because inserting the catheter during exhalation, applying suction while inserting the catheter, and limiting suctioning to 15 seconds do not address the priority of hyperoxygenating the client to prevent hypoxia.

Correct Answer: B

Rationale: When a client is on a soft diet, it is important to offer foods that are easy to chew and swallow. Mashed potatoes are a suitable choice for a soft diet as they are soft in texture and easy to digest. Fresh apples, raw carrots, and nuts are harder and may not be appropriate for a soft diet. Fresh apples and raw carrots require more chewing, and nuts are hard and crunchy, which can be difficult for someone on a soft diet to consume. Therefore, mashed potatoes are the correct option for a client on a soft diet.