A nurse is assessing a client's immune function by reviewing the laboratory value of the cellular response of the T-cells. The nurse should recognize that which of the following conditions is affected by the T-cells?

Choice A reason:
Decreased hemoglobin (Hgb) levels can be indicative of anemia or blood loss, but they are not typically associated with fluid volume deficit. In cases of fluid volume deficit, the Hgb concentration may actually appear elevated due to hemoconcentration as the plasma volume decreases.

Choice B reason:
Increased blood urea nitrogen (BUN) levels are expected in a fluid volume deficit because as the blood volume decreases, the concentration of solutes like urea can increase. This is often due to decreased renal perfusion and subsequent reduced renal function, leading to less urea being excreted through the kidneys.

Choice C reason:
Increased urine ketones are typically associated with diabetic ketoacidosis or starvation, not directly with fluid volume deficit. Ketones are produced when the body breaks down fats for energy, which is not a process directly related to fluid volume status.

Choice D reason:
Decreased urine specific gravity would not be expected in fluid volume deficit; in fact, one would expect the opposite. Specific gravity measures the kidney's ability to concentrate urine. In fluid volume deficit, the urine specific gravity would likely be increased as the body attempts to conserve water.

Choice A reason:
While monitoring urinary output is important after surgery to ensure kidney function and that the urinary tract has not been compromised during surgery, it is not the immediate priority. The nurse should ensure that the client is not experiencing postoperative complications such as urinary retention, but this comes after the assessment of vital signs.

Choice B reason:
Oxygen saturation is the priority assessment for a client being admitted from the PACU following an abdominal hysterectomy. Maintaining adequate oxygenation is critical after anesthesia, as respiratory function can be compromised. The nurse must ensure the client's airway is clear and that they are receiving sufficient oxygen to prevent hypoxia and other respiratory complications.

Choice C reason:
Inspecting the abdominal dressing is necessary to check for signs of bleeding or infection at the surgical site. However, this is not the first priority upon admission from the PACU. The nurse will assess the dressing after vital signs and oxygen saturation have been addressed.

Choice D reason:
Pain management is a significant part of postoperative care, and the nurse will need to assess the client's pain level to manage it effectively. However, the immediate priority is to ensure the client's vital signs are stable, which includes oxygen saturation, before addressing pain.