Refeeding Syndrome is a complication primarily associated with which type of nutritional support?

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Refeeding syndrome arises when nutrition is reintroduced after a period of starvation, causing a surge in insulin that drives phosphate, potassium, and magnesium into cells and depletes their serum levels. This can lead to dangerous electrolyte disturbances, thiamine deficiency, edema, and potential cardiac, neurological, or respiratory complications. The risk is especially pronounced when refeeding is started with a relatively rapid, carbohydrate-heavy caloric load.

In this context, enteral nutrition is the most commonly associated route with refeeding syndrome because it typically delivers calories and carbohydrates more quickly as feeding is initiated and advanced in malnourished patients. While parenteral nutrition can also cause refeeding syndrome if repletion proceeds too rapidly, the classic, most-highlighted scenario clinicians monitor for is the reintroduction of nutrition via the enteral route. To mitigate risk, start with a cautious, slow advancement of calories and proactively correct electrolytes and thiamine before and during refeeding.