A Pilot Study of Needle Size and Pain Perception With Botulinum Toxin A Injections

December 2, 2021 updated by: Murad Alam, Northwestern University

The Effect of Needle Size on Pain Perception in Patients Treated With Botulinum Toxin A Injections

The purpose of this study is to compare the levels of pain resulting from injections of Botox® for wrinkles on the forehead and between the eyes using two different sized needles (32 gauge and 30 gauge needles).

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Subjects will be screened, assessed, and randomized to be injected with onabotulinum toxin A using a 30-gauge needle on one side of the face and injected using a 32-gauge needle on the other side during their first clinic visit. This study is a pilot study designed to determine feasibility of these procedures.

Study Type

Interventional

Enrollment (Actual)

20

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Illinois
      • Chicago, Illinois, United States, 60611
        • Northwestern University Department of Dermatology

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

25 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  1. In good health
  2. Is a female
  3. Is 25-70 years of age
  4. Has moderate dynamic forehead/glabellar wrinkles
  5. Has willingness and the ability to understand and provide informed consent and communicate with the study staff

Exclusion Criteria:

  1. Younger than 25 or older than 70 years of age
  2. Pregnant or lactating
  3. Is a male

  4. Has received the following treatments in the forehead or glabellar region:

    1. botulinum toxin injections in the past 6 months
    2. ablative laser procedure in the past 6 months
    3. radiofrequency device treatment in the past 6 months
    4. ultrasound device treatment in the past 6 months
    5. medium to deep chemical peel in the past 6 months
    6. temporary soft tissue augmentation material in the area to be treated in the past year
    7. semi-permanent soft tissue augmentation material in the area to be treated in the past 2 years
    8. permanent soft tissue augmentation material in the area to be treated
  5. Has an active infection in the forehead or glabellar region (excluding mild acne)
  6. Is allergic to cow's-milk protein
  7. Is allergic to albumin
  8. Taking aminoglycoside
  9. Is currently using anticoagulation therapy
  10. Has a history of bleeding disorders
  11. Has a mental illness
  12. Unable to understand the protocol or to give informed consent

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: Randomized
  • Interventional Model: Single Group Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: 30-gauge needle
Subjects will be screened, assessed, and randomized to be injected with onabotulinum toxin A using a 30-gauge needle on one side of the face and injected using a 32-gauge needle on the other side during their first clinic visit. All needles would be luer lock, ½ inch length, and attached to separate 1cc syringes. Injection depth would be 1-2mm, dermal, and the angle of incidence would be perpendicular.
Procedure: 30-gauge needle
Active Comparator: 32-gauge needle
Subjects will be screened, assessed, and randomized to be injected with onabotulinum toxin A using a 30-gauge needle on one side of the face and injected using a 32-gauge needle on the other side during their first clinic visit. All needles would be luer lock, ½ inch length, and attached to separate 1cc syringes. Injection depth would be 1-2mm, dermal, and the angle of incidence would be perpendicular.
Procedure: 32-gauge needle

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Visual analog score (VAS) pain rating after each side is injected
Time Frame: 1 hour on Treatment day
Subjects will rate pain using the visual analog score (VAS 1-10) after each side is injected using the 30 or 32 gauge needles. Lower values represents less pain; higher values represents more pain.
1 hour on Treatment day

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Northwestern University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

November 1, 2013

Primary Completion (Actual)

January 1, 2014

Study Completion (Actual)

January 1, 2014

Study Registration Dates

First Submitted

November 5, 2013

First Submitted That Met QC Criteria

November 5, 2013

First Posted (Estimate)

November 11, 2013

Study Record Updates

Last Update Posted (Actual)

December 6, 2021

Last Update Submitted That Met QC Criteria

December 2, 2021

Last Verified

December 1, 2021

More Information

Terms related to this study

Other Study ID Numbers

  • STU84470

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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