Comparison of Vapocoolant and Eutectic Mixture of Local Anaesthetic (EMLA) Cream for Epidural Injection.
1
Associate Professor, Department of Anesthesiology, Shri Guru Ram Rai Institute of Medical & Health Sciences, Dehradun, India
2
Assistant Professor, Department of Anesthesiology, Veer Chandra Singh Garhwali Government Institute of Medical Science and Research (VCSGGIMS&R), Srinagar, Uttarakhand, India
3
4Associate Professor, Department of Anesthesiology, Uttar Pradesh University of Medical Sciences (UPUMS), Saifai, Etawah, India.
Received: 2025-09-22
Revised: 2025-10-08
Accepted: 2025-10-20
Published: 2025-10-31
Background: Pain during epidural needle insertion can cause significant anxiety and discomfort, adversely affecting patient experience. Although subcutaneous local anesthetic infiltration is common, it may itself cause discomfort or adverse reactions. Eutectic Mixture of Lidocaine and Prilocaine (EMLA) cream and vapocoolant spray are non-invasive alternatives, but their comparative efficacy for epidural procedures remains understudied. Objective: To compare the analgesic efficacy of EMLA cream versus vapocoolant spray in reducing pain during epidural needle insertion. Methods: A prospective, randomized controlled trial was conducted at a tertiary center in 2024. A total of 140 adults (aged 18–65 years, ASA I–II) undergoing elective procedures requiring epidural anesthesia were randomized to receive either EMLA cream (2.5 g, applied 60 minutes prior; n = 70) or vapocoolant spray (ethyl chloride, applied for 60 seconds; n = 70) before 18G epidural needle insertion. Pain intensity was assessed using the Numeric Rating Scale (NRS, 0–10). Secondary outcomes included patient movement, satisfaction (5-point Likert scale), and adverse events. Results: The mean NRS pain score was significantly lower in the EMLA group (1.86 ± 1.27) compared with the vapocoolant group (2.51 ± 1.42; p = 0.005). Patient movement was also reduced (90.0% vs. 77.1%; p = 0.040). Satisfaction scores were higher in the EMLA group but did not reach significance. Adverse events were infrequent and mild in both groups. Conclusion: EMLA cream provided superior analgesia and reduced patient movement during epidural needle insertion, making it preferable for elective procedures. Vapocoolant remains a practical, rapid-onset option in urgent or time-sensitive settings.
EMLA cream, vapocoolant spray, epidural injection, analgesia, pain management.