What is the potential consequence of correcting hyponatremia too quickly?

What is the potential consequence of correcting hyponatremia too quickly?

• A. Hyponatremia recurrence
• B. Seizures
• C. Osmotic demyelination syndrome
• D. Kidney injury

Answer: (C)

Rapid correction of chronic hyponatremia can cause osmotic demyelination syndrome. When the brain has adapted to low sodium by shedding osmolytes, a quick rise in serum sodium creates a hypertonic environment outside the brain cells. Water shifts out of neurons and glial cells, leading to injury and demyelination, most prominently in the central pons but potentially in other areas as well. This damage disrupts neural signaling and can produce serious neurologic deficits such as speech and swallowing difficulties, weakness, and even life-threatening movement or consciousness problems. To prevent this, corrections are kept gradual, monitoring sodium levels carefully, because a faster-than-recommended rise is the key risk factor. If overcorrection happens, strategies like desmopressin can be used to bring sodium back down and limit damage. Seizures or kidney injury can occur with hyponatremia itself or other issues, but the classic dangerous outcome from rapid correction is osmotic demyelination syndrome.

Rapid correction of chronic hyponatremia can cause osmotic demyelination syndrome. When the brain has adapted to low sodium by shedding osmolytes, a quick rise in serum sodium creates a hypertonic environment outside the brain cells. Water shifts out of neurons and glial cells, leading to injury and demyelination, most prominently in the central pons but potentially in other areas as well. This damage disrupts neural signaling and can produce serious neurologic deficits such as speech and swallowing difficulties, weakness, and even life-threatening movement or consciousness problems. To prevent this, corrections are kept gradual, monitoring sodium levels carefully, because a faster-than-recommended rise is the key risk factor. If overcorrection happens, strategies like desmopressin can be used to bring sodium back down and limit damage. Seizures or kidney injury can occur with hyponatremia itself or other issues, but the classic dangerous outcome from rapid correction is osmotic demyelination syndrome.