Treatment of Acute FPIES with Repeated Vomiting and Mild Lethargy
Clinical Scenario
This protocol covers acute food protein-induced enterocolitis syndrome (FPIES) at
moderate severity, specifically when the patient has had
more than 3 episodes of emesis and is showing
mild lethargy.
This combination — high-frequency vomiting beyond the typical acute threshold together with
reduced alertness — defines a presentation that calls for a structured, evidence-based acute
management approach.
Defining Presentation Features
The two clinical markers that shape management in this scenario are persistent frequent emesis
(more than 3 discrete episodes) and mild lethargy. Together they indicate a moderate acute
reaction requiring active intervention beyond observation alone.
Treatment Approach — Partial Overview
Management of this presentation involves antiemetic therapy and consideration of
intravenous fluid support to address the acute reaction. Age eligibility and the specific
parameters for each intervention are part of the full structured regimen.
Complete dosing, routes, decision criteria, and sequencing are available in the full protocol ↓
Clinical Targets
- Resolution of the acute reaction within 4–6 hours from onset
- Patient able to tolerate clear liquids before discharge
References
DOI: 10.1016/j.jaci.2016.12.966
- >3 Episodes of emesis and mild lethargy
- If age greater than 6 mo: administer ondansetron intramuscular 0.15 mg/kg/dose; maximum, 16 mg/dose
- Consider placing a peripheral intravenous line for normal saline bolus 20 mL/kg, repeat as needed
- Monitor for resolution at least 4-6 h from the onset of a reaction
- Discharge home if patient is able to tolerate clear liquids
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