Which electrolytes should be closely monitored with nutrition therapy in eating disorders?

Which electrolytes should be closely monitored with nutrition therapy in eating disorders?

• A. Sodium, chloride, bicarbonate
• B. Potassium, magnesium, phosphorus
• C. Calcium, phosphate, vitamin D
• D. Iron, zinc, copper

Answer: (B)

Monitoring electrolytes during nutrition therapy for eating disorders focuses on preventing refeeding syndrome, a dangerous shift in minerals that can occur when reintroducing calories to a severely malnourished patient. The most important trio to track is potassium, magnesium, and phosphorus. When refeeding starts, insulin drives these electrolytes into cells to fuel new growth and metabolic processes. If levels fall too low, serious complications can arise: hypokalemia and hypomagnesemia can cause dangerous heart rhythms and muscle weakness, while hypophosphatemia impairs energy production and can lead to respiratory failure, cardiac issues, and neurologic problems. Phosphorus is particularly critical because its depletion happens early and can appear before weight gain is seen, signaling the need to adjust nutrition therapy. Sodium and chloride are important for fluid and acid-base balance but aren’t as central to the immediate risk during the early refeeding period. Calcium and phosphate are relevant for bone health and metabolic function, but the combination of potassium, magnesium, and phosphorus best reflects the electrolyte disturbances most likely to complicate nutrition therapy in eating disorders. Trace minerals like iron, zinc, and copper are also important in recovery, but they don’t drive the acute refeeding risk in the same way.

Monitoring electrolytes during nutrition therapy for eating disorders focuses on preventing refeeding syndrome, a dangerous shift in minerals that can occur when reintroducing calories to a severely malnourished patient. The most important trio to track is potassium, magnesium, and phosphorus. When refeeding starts, insulin drives these electrolytes into cells to fuel new growth and metabolic processes. If levels fall too low, serious complications can arise: hypokalemia and hypomagnesemia can cause dangerous heart rhythms and muscle weakness, while hypophosphatemia impairs energy production and can lead to respiratory failure, cardiac issues, and neurologic problems. Phosphorus is particularly critical because its depletion happens early and can appear before weight gain is seen, signaling the need to adjust nutrition therapy.

Sodium and chloride are important for fluid and acid-base balance but aren’t as central to the immediate risk during the early refeeding period. Calcium and phosphate are relevant for bone health and metabolic function, but the combination of potassium, magnesium, and phosphorus best reflects the electrolyte disturbances most likely to complicate nutrition therapy in eating disorders. Trace minerals like iron, zinc, and copper are also important in recovery, but they don’t drive the acute refeeding risk in the same way.