NCT01606046

Comparison of the Effects of Vapocoolant Spray and EMLA Cream on Pain During Needle Electromyography

Comparison of the Effects of Vapocoolant Spray and Topical Anesthetic Cream on Pain During Needle Electromyography: a Randomized Controlled Clinical Trial

• Status: Completed
• Phase: Phase 4
• Study type: Interventional
• Enrollment: 99 (actual)
• Sponsor: The Catholic University of Korea · Academic / Other
• Sex: All
• Age: 19 Years – 70 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study is to compare the effects of vapocoolant spray and topical lidocaine 2.5% + prilocaine 2.5% cream (EMLA) on reducing pain during needle electromyography.

Detailed description

The study was conducted on patients with patients that underwent needle EMGs in the lower extremity between July and August 2011 at the university hospital. The patients were divided into a total of three groups by random assignment: a control group that did not receive pretreatment, a group that received ethyl chloride vapocoolant spray and a group that received topical anesthetic cream (EMLA cream®).The patients with spray group, they were sprayed with ethyl chloride vapocoolant spray for 5 seconds from a distance of 30 cm just before the needle EMG, and patients with EMLA cream, they received an application of topical anesthetic cream on the needle electrode insertion site 60 minutes before the needle EMG. The 37-mm monopolar needle electrode was vertically inserted into the medial head of the gastrocnemius muscle in all patients. To assess the degree of pain for each group, patients were asked to indicate their level of pain on a 100 mm VAS (0, no pain; 100, worst intolerable pain) after the needle EMG in the gastrocnemius muscle. In both experimental groups, a 5-point Likert scale was used to evaluate patient satisfaction with the pain reduction method used and their willingness to use the same analgesic method in another EMG.

Conditions

• Electrodiagnosis

Interventions

Type	Name	Description
DEVICE	vapocoolant spray	spray for 5 seconds from a distance of 30 cm just before the needle EMG
DRUG	topical anesthetic cream	application of EMLA cream on the needle electrode insertion site 60 minutes before the needle EMG

Timeline

• Start date: 2011-07-01
• Primary completion: 2011-07-01
• Completion: 2011-08-01
• First posted: 2012-05-25
• Last updated: 2012-06-21

Locations

1 site across 1 country: South Korea