Correct Answer: C

Rationale: A potassium level of 5.5 mEq/L (C) is elevated and concerning in a client with renal failure receiving hemodialysis, as it can lead to life-threatening cardiac arrhythmias. Monitoring blood pressure (A), weight gain (B), and weight loss (D) are essential in clients on hemodialysis, but an elevated potassium level poses an immediate risk that requires prompt intervention.

Correct Answer: B

Rationale: Option B is the best procedure for the nurse to follow when assisting a client from the bed to a chair. This option emphasizes the correct positioning of the nurse with feet spread apart and knees aligned with the client's, providing a stable base of support. By standing and pivoting the client into the chair, the nurse can maintain control and stability, especially around the client's knees, ensuring a safe transfer.

Correct Answer: D

Rationale: A temperature of 100.4°F (38°C) (D) is the most concerning finding for a client receiving total parenteral nutrition (TPN) as it may indicate an infection, which poses a significant risk. Monitoring blood glucose level (A), blood pressure (B), and serum albumin (C) are also important, but an elevated temperature suggests a potential serious complication that requires immediate attention.

Correct Answer: D

Rationale: Central venous pressure (CVP) monitoring is the most effective method to assess fluid status and the cardiovascular system in a client with severe burns. Severe burns can lead to significant fluid shifts and hemodynamic changes, making central venous pressure monitoring crucial for guiding fluid resuscitation and managing cardiovascular stability in these patients.

Correct Answer: A

Rationale: To calculate the mL to administer, divide the ordered dose (3 mg) by the concentration (4 mg/mL). 3 mg · 4 mg/mL = 0.75 mL. Rounding to the nearest tenth, the correct dose to administer is 0.8 mL.