Superior anti-emetic efficacy of granisetron-dexamethasone combination in children undergoing middle ear surgery

Area of Science:

• Anesthesiology and Pain Management
• Pediatric Surgery
• Pharmacology

Background:

• Post-operative vomiting (POV) is a common complication in children following middle ear surgery.
• Effective antiemetic prophylaxis is crucial for improving patient outcomes and recovery.
• Granisetron and dexamethasone are established antiemetic agents with potential synergistic effects.

Purpose of the Study:

• To evaluate the efficacy of a granisetron-dexamethasone combination versus granisetron monotherapy for preventing POV in pediatric patients.
• To compare the incidence of emesis and the need for rescue antiemetics in children undergoing middle ear surgery.

Main Methods:

• A randomized controlled trial involving 90 pediatric patients (3-12 years) undergoing middle ear surgery.
• Participants were assigned to receive placebo, granisetron (40 mcg/kg), or granisetron (40 mcg/kg) plus dexamethasone (150 mcg/kg) intravenously post-anesthesia induction.
• Outcomes assessed included frequencies of retching, vomiting, need for rescue antiemetics, and adverse events within 24 hours post-operatively.

Main Results:

• Complete response (no emesis or rescue medication) was achieved in 50% (placebo), 80% (granisetron), and 96.67% (granisetron-dexamethasone) of children (P < 0.05).
• The granisetron-dexamethasone combination demonstrated significantly higher efficacy in preventing post-operative emesis.
• The incidence of adverse events was comparable across all treatment groups, indicating a favorable safety profile for the combination.

Conclusions:

• The prophylactic combination of granisetron and dexamethasone is significantly more effective than granisetron alone for preventing post-operative emesis in children undergoing middle ear surgery.
• This combination therapy represents a valuable strategy for optimizing antiemetic control in this pediatric surgical population.