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Spots Global Cancer Trial Database for Efficacy Trial of Eutectic Lidocaine/Prilocaine Cream 5% (EMLA) for Analgesia Prior to Cryotherapy of Verrucae Plantaris

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Trial Identification

Brief Title: Efficacy Trial of Eutectic Lidocaine/Prilocaine Cream 5% (EMLA) for Analgesia Prior to Cryotherapy of Verrucae Plantaris

Official Title: A Double-Blind, Randomized, Placebo-Controlled Trial of Eutectic Lidocaine/Prilocaine Cream 5% (EMLA) for Analgesia Prior to Cryotherapy of Verrucae Plantaris in Adults

Study ID: NCT01330615

Conditions

Plantar Warts

Interventions

EMLA
Placebo

Study Description

Brief Summary: Aims: The investigators main purpose is to assess the efficacy of analgesia provide by topical lidocaine/prilocaine cream 5% (EMLA)® to pared plantar warts prior to application of liquid nitrogen cryotherapy in adults.

Detailed Description: Methodology: The study is a single-centre, double-blind, randomized, placebo-controlled, parallel-group trial with one visit. The investigators planned to include at least 64 patients in 4 months. Adult patients (at least 21 years old) diagnosed with plantar warts are potential subjects for the study. Once a potential subject is identified, the field investigator will assess him/her for eligibility to enter the study. Then, the potential subject will be provided with full and adequate verbal and written information about the nature, purpose, possible risks and benefits of the study. If the subject agrees to enroll into the study, a signed informed consent will be obtained from him/her. All patients are randomly assigned by computer-generated randomization sequence to receive either eutectic lidocaine/prilocaine cream (EMLA)® 5% or placebo 60 mins prior to application of cryotherapy. The plantar warts are pared with shape blade before applying EMLA®or placebo cream. Based on the randomization, an designated dermatology laboratory technician will apply either the EMLA® cream 5% or placebo cream to the wart lesions. The cream is applied as a thick layer to the wart and to the surrounding 1 to 2 mm and left on for 60 minutes under occlusion of Tegaderm dressing. The cream is then removed, and liquid cryotherapy applied using cryospray. The lesions are treated with double freeze-thaw cycle. The end point of each freeze is a complete ice-ball covering the lesion with 1-2mm peripheral extension. The study involved only one treatment with either placebo or EMLA® cream 5% followed by cryotherapy as described. No other analgesic other than the EMLA® cream 5% or placebo is allowed at least 2 hours prior to or during cryotherapy. A 100 mm visual analogue pain scale (VAS) is used to denote pain severity ranging from "no pain" (0 mm) to the "worst possible pain" (100 mm). The patient will choose a distance from the "no pain" anchor closest to the pain experienced during cryotherapy for wart removal. Pain is evaluated in each participant using a self-administered VAS immediately after cryotherapy treatment. Potential Benefits: The potential benefits are: 1. The patients may experience less pain during application cryotherapy. 2. The application of local anesthetic cream may possibly increase the effectiveness of cryotherapy. Potential Risks: EMLA cream® is known to be relatively safe with minimal side effects. The commonest side effect would be local irritation to the skin e.g. redness, itchiness which is reversible after removal of the cream. Very rarely (\<1000), severe allergic reaction can occur with application of EMLA cream® (AstraZeneca information brochure).

Eligibility

Minimum Age: 21 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

University Dermatology Clinic, National University Hospital, Singapore, , Singapore

Contact Details

Name: Chen Wee Aw, MBBS

Affiliation: National University Hospital, Singapore

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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