Antiemetics in the ED: a randomized controlled trial comparing 3 common agents

Area of Science:

• Emergency Medicine
• Clinical Pharmacology
• Pharmacology

Background:

• Nausea is a common symptom in emergency departments.
• Effective intravenous antiemetic options are crucial for patient management.

Purpose of the Study:

• To compare the efficacy of intravenous droperidol, metoclopramide, and prochlorperazine versus placebo for moderate to severe nausea in emergency department patients.
• To evaluate side effects, including extrapyramidal symptoms, associated with these antiemetics.

Main Methods:

• A randomized, placebo-controlled, double-blind trial was conducted.
• 100 adult emergency department patients with moderate to severe nausea were enrolled.
• Nausea was assessed using a visual analog scale at baseline and 30 minutes post-treatment.

Main Results:

• Droperidol demonstrated significantly greater nausea reduction compared to metoclopramide and prochlorperazine at 30 minutes (P = .04).
• Metoclopramide and prochlorperazine showed no significant difference in efficacy compared to saline placebo.
• Droperidol was associated with a significantly higher incidence of akathisia (71.4%) at 24-hour follow-up.

Conclusions:

• Intravenous droperidol is more effective than metoclopramide or prochlorperazine for acute nausea relief in the ED.
• The increased risk of akathisia with droperidol necessitates careful consideration of its use.
• Metoclopramide and prochlorperazine offer no significant benefit over placebo for nausea in this setting.