An older client is admitted to the intensive care unit unconscious after several days of vomiting and diarrhea. Vital Signs Heart Rate-beats/minute- 110 Respirations - breathes/minute- 28 Blood Pressure – mmHG- 80/60 Arterial blood gases (ABGs) Ph- 7.34 PaCO2- 34 mmHg HCO3- 20 mmol/L pO2- 90 mmHg Electrolytes Results Sodium 130 mEq/L(mmol/L) Potassium 2.5 mEq/L (mmol/L) Chloride 95 mEq/L (mmol/L) Reference Range: Sodium [136 to 145 mEq/L (136 to 145 mmol/L)] Potassium [3.5 to 5 mEq/L (3.5 to 5 mmol/L)] Chloride [98 to 106 mEq/L (98 to 106 mmol/L)] PaCO2 [35 to 45 mm Hg] HCO, [21 to 28 mEq/L (21 to 28 mmol/L)] PaO2 [80 to 100 mm Hg) The nurse inserts a urinary catheter and obtains a scant amount of dark amber output. Which intervention should the nurse implement first? (Please scroll and view each tab's information in the client's medical record before selecting the answer.)

A) Incorrect - Initiating continuous dopamine infusion is not a priority in this situation. The client's low blood pressure and electrolyte imbalances require more immediate attention. B) Incorrect - Administering promethazine addresses symptoms like nausea and vomiting, but it doesn't address the primary issue of hypovolemia and low blood pressure. C) Incorrect - Administering potassium chloride without addressing the fluid deficit can be dangerous and may lead to further electrolyte imbalances. D) Correct- The client's vital signs and laboratory results indicate hypovolemia (low blood pressure, low sodium, and low potassium). The immediate priority is to address the fluid deficit and correct the electrolyte imbalances. Administering a bolus of 0.9% sodium chloride (normal saline) will help increase intravascular volume and improve blood pressure, as well as correct the electrolyte imbalances to some extent.