Correct Answer: B

Rationale: The LPN should monitor potassium levels closely while the client is taking furosemide (Lasix) due to the medication's potential to cause hypokalemia. Furosemide is a loop diuretic that can lead to potassium loss through increased urine output. Hypokalemia can result in serious complications such as cardiac dysrhythmias. Monitoring sodium levels (choice A) is important but not as critical as monitoring potassium in this context. Calcium (choice C) and magnesium (choice D) levels are not typically affected by furosemide and are not the priority for monitoring in this scenario.

Correct Answer: B

Rationale: When caring for a client with tuberculosis (TB), airborne precautions should be implemented. Tuberculosis is spread through the air via droplet nuclei, requiring the use of airborne precautions to prevent the transmission of the infection. Droplet precautions are used for diseases spread by large respiratory droplets, such as influenza or pertussis. Contact precautions are used for diseases that spread through direct contact, such as MRSA. Standard precautions are used for all clients to prevent the transmission of infections from blood, body fluids, non-intact skin, and mucous membranes.

Correct Answer: C

Rationale: The rationale behind checking for impaired skin integrity in an immobile patient is that pressure reduces circulation to the affected tissue. Prolonged pressure on specific body parts can lead to reduced blood flow to those areas, causing tissue damage and potentially leading to pressure ulcers. Choices A, B, and D are incorrect because inadequate blood flow causing decreased tissue ischemia, limited caloric intake leading to thicker skin, and decreased verbalization of skin care needs are not directly related to the rationale for checking for impaired skin integrity in immobile patients.

Correct Answer: C

Rationale: After a client experiences severe coughing following nasogastric tube feedings, it is crucial to verify proper tube placement. Checking the pH of fluid withdrawn from the tube helps confirm the tube's correct positioning. Option A is incorrect because further action is necessary to ensure the client's safety. Option B is inappropriate as it suggests stopping the feeding without assessing the tube's placement. Option D is incorrect as injecting air into the tube may lead to further complications if the tube is not positioned correctly.

Correct Answer: A

Rationale: The nurse's priority should be the client's temperature. A high temperature of 39.2 degrees C (102 degrees F) indicates a potential infection or inflammation that requires immediate attention. While heart rate and abdominal tenderness are important assessments, the temperature takes precedence as it signals a more urgent issue. Overdue menses, although significant, are not the priority in this scenario when compared to the possibility of an acute infection or inflammatory process.