Why she is at high risk of refeeding syndrome
Refeeding syndrome is a dangerous shift of fluid and electrolytes that can occur when nutrition is restarted after a period of starvation. She has eaten very little for 10 days and has lost a significant amount of weight recently, so her intracellular stores of phosphate, potassium, and magnesium are depleted even if her blood levels look normal. When carbohydrate is reintroduced, insulin rises and drives glucose, phosphate, potassium, and magnesium into the cells, so serum levels can fall abruptly. The result may be weakness, cardiac arrhythmias, respiratory failure, fluid overload, and confusion.
The three correct measures
Item 1, thiamine before the first feeding, is correct because thiamine is a cofactor in carbohydrate metabolism, and a sudden carbohydrate load can precipitate Wernicke encephalopathy. The plan gives thiamine 100 mg before feeding and daily for 5 to 7 days. Item 2, starting at about 10 to 20 kcal/kg/day and advancing slowly, limits the insulin surge and the electrolyte shift. Item 5, daily weights and watching for edema, detects the sodium and water retention that refeeding can cause. Low and slow feeding, thiamine first, and close monitoring are the core of refeeding prevention.
Why items 3 and 4 are wrong
Item 3 sounds reasonable but is incomplete: checking potassium, magnesium, and phosphate only once before feeding misses the fall that happens after feeding starts. The levels are checked every 12 hours for the first 3 days and replaced as needed. Item 4, starting at her full estimated needs of 30 kcal/kg/day, is exactly the practice that provokes refeeding syndrome in a high-risk client. Watch out! The word "once" in item 3 is the trap; baseline electrolytes are drawn, but monitoring must continue after feeding begins.
| Measure | In the plan? | Reason |
|---|
| Thiamine before feeding | Yes | Prevents Wernicke encephalopathy when carbohydrate is restarted |
| Start 10–20 kcal/kg/day, advance slowly | Yes | Limits insulin-driven electrolyte shifts |
| Daily weight, watch for edema | Yes | Detects fluid retention |
| Electrolytes checked once only | No | Levels fall after feeding begins; check every 12 hours for 3 days |
| Full needs from day 1 | No | Provokes refeeding syndrome |
Exam takeaway
When a stem describes an older or malnourished client with days of poor intake and recent weight loss, think of refeeding risk before choosing a feeding plan. Key point! Give thiamine before feeding, start at a low rate, advance gradually, and keep monitoring electrolytes, weight, and fluid status after feeding starts.