disequilibrium syndrome post dialysis?

الشرح

Core Concept: Dialysis Disequilibrium Syndrome (DDS) is a neurological complication caused by the rapid removal of urea and other osmotically active solutes from the blood during hemodialysis. This rapid decrease in BUN and serum sodium creates an osmotic gradient that draws water into the brain cells, leading to cerebral edema.

Clinical Presentation:

• Headache, nausea, vomiting, confusion, and restlessness.
• Severe cases present with seizures, coma, and increased intracranial pressure.

Diagnosis:

• First-line tool: Clinical assessment of neurological status during or immediately after dialysis.
• Gold standard: Diagnosis of exclusion after ruling out other causes of altered mental status (e.g., hypoglycemia, stroke, severe electrolyte imbalances) via CT head and lab work.

Management:

• Acute management: Slow or stop the dialysis treatment immediately. Administer hypertonic saline or mannitol to reduce cerebral edema and manage seizures.
• Definitive management: Prevent recurrence by prescribing shorter, more frequent dialysis sessions with lower blood flow rates and a smaller dialyzer surface area for high-risk patients.