A nurse is developing a care plan for a client diagnosed with syndrome of inappropriate antidiuretic hormone secretion (SIADH) following a head injury. Which intervention should the nurse include in the plan of care?

Nursing Clinical Practice Guide Clinical Scenario: You are caring for Mr. Johnson, a 58-year-old who sustained a traumatic brain injury in a fall. Three days post-injury, he becomes increasingly lethargic and confused. His urine output has decreased significantly, and his lab work shows: Sodium 130 mEq/L, Serum Osmolality low, Urine Osmolality high. The physician diagnoses SIADH and writes an order: "Restrict total fluids to 1000 mL/24 hours." Nursing Intervention Strategy 1. Assessment: Perform frequent neurological checks (every 1-2 hours initially) using a tool like the Glasgow Coma Scale (GCS). Monitor for subtle changes: increased headache, disorientation, muscle twitching, or seizure activity. Accurately measure and record all Intake and Output (I&O). 2. Planning & Implementation (Fluid Restriction): * Calculate the hourly fluid allowance (1000 mL / 24 hrs ≈ 42 mL/hr). * Collaborate with dietary services to provide a fluid-restricted meal tray. * Key Point! Educate the patient and family on the critical reason for fluid restriction. Explain that even ice chips, gelatin, and ice cream count as fluid. * Provide meticulous oral care every 2 hours with mouthwash or lemon-glycerin swabs to alleviate thirst and dry mouth. * Schedule fluids strategically throughout the day to help the patient cope. * Administer all IV medications in the smallest volume of fluid possible (e.g., saline flushes count toward intake). 3. Evaluation: Monitor serum sodium levels daily. The goal is a slow, gradual increase (no more than 6-8 mEq/L in the first 24 hours). Improvement in neurological status is the best clinical indicator of effective treatment. Patient Safety and Precautions * Seizure Precautions: Due to the risk of severe hyponatremia leading to seizures, implement bed alarms, padded side rails, and have suction equipment available. * Medication Caution: If hypertonic saline (3% NaCl) is ordered, it must be administered via an IV infusion pump on a dedicated line, with frequent serum sodium checks (every 2-4 hours initially). * Fall Risk: The patient's confusion and lethargy increase fall risk. Keep the bed in low position, and ensure call light is within reach.
Nursing Procedure & Medication Flow Managing Strict Fluid Restriction: 1. Label the patient's room and chart with "Fluid Restriction" alert. 2. Use a graduated pitcher for water at the bedside to visually track intake. 3. Record the volume of all oral, IV, tube feed, and flush fluids in the I&O sheet. 4. At the end of each shift, total the intake and compare it to the prescribed limit. Report significant variances. A Word from Your Senior Nurse "SIADH is a perfect example of how a tiny hormone can cause big problems. In neuro units, we see it often after head injuries. Remember, your most important tools are your eyes and your assessment skills. That slight increase in confusion or new headache could be the first sign of dropping sodium. Fluid restriction seems simple, but it's challenging for patients. Your empathy and creative nursing care—like fantastic oral care and scheduling favorite fluids—make all the difference. You're not just following an order; you're protecting their brain from swelling and seizures. Connect the dots: head injury → possible pituitary disruption → SIADH → hyponatremia → neuro changes. That's the kind of critical thinking that saves lives and ace's the NCLEX!"