A nurse is caring for four clients who are postoperative from surgery 24 hr ago. At 1200 the nurse assesses the clients. Which of the following clients is the nurse's priority?

A. A significant drop in blood pressure from 138/86 mm Hg to 90/60 mm Hg indicates potential hypovolemia or hemorrhage, which requires immediate intervention to prevent shock or other complications. This is the most critical finding among the clients. B. A client with stable blood glucose levels between 110 mg/dL and 100 mg/dL is not a priority, as these readings are within a normal range and do not indicate immediate danger. C. The transition of wound drainage from sanguineous to serosanguineous is a normal part of the healing process and is not an urgent concern. D. A mild increase in pain from 1 to 3 on a 1 to 10 scale is also not an immediate priority, as it remains within a low pain range and can be managed with routine pain control measures.