When to Start F75 in SAM Patients with Shock
Do not start F75 until shock is controlled and hemodynamic stability is achieved—specifically when pulse, perfusion, and mental status normalize. Only after resuscitation with isotonic intravenous fluids (lactated Ringer's or normal saline) should you transition to therapeutic feeding 1.
Initial Management Algorithm
Phase 1: Shock Resuscitation (First Priority)
- Immediately begin IV fluid resuscitation with isotonic crystalloids (lactated Ringer's or normal saline)
- Give at least 30 mL/kg within the first 3 hours 2
- Continue IV rehydration until:
- Pulse normalizes
- Perfusion improves
- Mental status returns to normal
- Patient awakens and has no aspiration risk
- No evidence of ileus 1
Phase 2: Transition to Enteral Nutrition
Once shock is controlled (hemodynamically stable), you can initiate feeding:
- Start low-dose enteral nutrition as soon as shock resolves 3
- Begin with F75 during the stabilization phase (2-7 days) 4
- F75 provides 75 kcal per 100 mL with low protein (0.9 g per 100 mL) 4
Critical Contraindications to Early F75
Delay F75 if any of the following persist:
- Uncontrolled shock with inadequate tissue perfusion
- Altered mental status
- Evidence of ileus
- Very high vasopressor requirements (e.g., noradrenaline >1 μg/kg/min with persistent hyperlactatemia) 3
Key Clinical Pitfalls
The evidence shows significant mortality risk when feeding is initiated prematurely. In the WHO protocol study, 24.5% mortality occurred in SAM children with shock 5. Deaths were associated with:
- Need for mechanical ventilation
- High inotrope scores (>20)
- Requirement for vasopressors beyond dopamine 6
Monitor closely for refeeding syndrome when transitioning from stabilization to rehabilitation phases. Studies show refeeding syndrome incidence of 34.8% during F75 to RUTF transition, particularly in children with low baseline sodium and edematous malnutrition 7.
Practical Monitoring Points
After initiating F75:
- Assess for shock resolution at 8 and 24 hours 5
- Monitor serum electrolytes (especially phosphorus, potassium, sodium)
- Watch for gastrointestinal intolerance (vomiting, diarrhea)
- Check for signs of fluid overload in edematous malnutrition
The Surviving Sepsis Campaign guidelines support early enteral feeding in septic shock patients who can be fed enterally, but emphasize this applies only to hemodynamically stable patients 2. In SAM with shock, the threshold for "stable" must be more conservative given the metabolic derangements and increased mortality risk in this vulnerable population.