Effectiveness of granisetron in controlling pediatric gastroenteritis-related vomiting after discharge from the ED

Area of Science:

• Pediatric Emergency Medicine
• Gastroenterology
• Pharmacology

Background:

• Gastroenteritis-related vomiting and dehydration are common in children presenting to emergency departments.
• Oral rehydration therapy (ORT) is the standard initial treatment, but some patients fail to tolerate it.
• Controlling vomiting after discharge is crucial for successful rehydration and preventing return visits.

Purpose of the Study:

• To evaluate the efficacy of oral granisetron, a 5-HT3 receptor antagonist, in managing vomiting in pediatric patients with gastroenteritis.
• To determine if granisetron reduces vomiting in children who failed initial oral rehydration therapy (ORT) and were discharged from the emergency department (ED).

Main Methods:

• A randomized, placebo-controlled trial was conducted involving children aged 6 months to 8 years with gastroenteritis-related vomiting and dehydration.
• Patients who failed initial ORT received either oral granisetron (40 μg/kg) or placebo, with ORT resumed.
• The primary outcome was the proportion of patients experiencing vomiting at 24 hours post-discharge, with follow-up via telephone.

Main Results:

• Out of 900 eligible patients, 165 who vomited during initial ORT were randomized.
• No statistically significant difference in vomiting at 24 hours was observed between the granisetron group (38/83) and the placebo group (45/82) (P = .16).
• Vomiting trends throughout the follow-up period also showed no significant difference between the groups.

Conclusions:

• Oral granisetron is not effective in controlling gastroenteritis-related vomiting in pediatric patients discharged from the ED.
• Granisetron did not alter the natural course of illness for vomiting in this patient population.
• Further research may be needed to explore alternative antiemetic strategies for refractory vomiting in pediatric gastroenteritis.