A nurse is assessing four clients on a medical-surgical unit. Which of the following clients should the nurse care for first?

A. Diarrhea and requests clear liquids This is non-urgent. The client is stable and can eat as tolerated. B. Type 1 DM, fasting glucose of 150 A fasting glucose of 150 is slightly elevated but not a priority compared to potential neurovascular compromise. C. Pneumonia with axillary temp of 38°C Mild fever is expected with pneumonia; not an immediate concern. D. Cast on leg with numbness/paresthesia This may indicate compartment syndrome or impaired circulation and requires immediate assessment to prevent permanent damage.