- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03420820
Concentrating on Antisepsis: 5% vs. 10% Povidone-Iodine Prior to Intravitreal Injection
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Introduction: An estimated 5.9 - 7.9 million intravitreal injections (IVI) were given in 2016. While the incidence of post-injection endophthalmitis is exceedingly low, it is a feared complication of the procedure. 96% of culture-positive post-injection endophthalmitis cases are caused by conjunctival commensals, emphasizing the importance of ocular surface sterilization prior to IVI. The most recently published guidelines for IVI state that "Povidone-Iodine (5-10%) should be the last agent applied to the intended injection site before the injection," a recommendation that is universally followed. However, there is no standard of care regarding the concentration of PI nor the field of sterilization (e.g, cleaning the eyelids and lashes), and technique varies widely in clinical practice. The literature reveals no direct comparison of 5% vs 10% PI in the context of intravitreal injection.
Methods: Single-center randomized prospective trial enrolling patients into three protocols: 5% P-I applied to ocular surface from bottle, 10% P-I swabstick applied to ocular surface, and 10% P-I swabstick applied to lids, lashes, and ocular surface. Pre-procedure cultures will be obtained from the ocular surface, and a second culture will be taken following antisepsis, injection, and irrigation. Standard microbiologic techniques will be used to collect, culture, identify, and quantify ocular surface bacteria counts. Kruskal Wallis test will be used to assess significant difference between median bacterial loads at baseline and post-cleaning, as well as median reduction from baseline. Chi-squared test will be used to assess significant difference between reduction in number of patients with specific bacteria. Following injection, a patient survey will be administered to compare patients' subjective symptoms of ocular surface irritation during the PI preparation phase of the procedure.
Conclusions: The investigators anticipate that no significant difference exists in decrease of median CFUs between the three protocols, and that lower concentration of P-I provides a more comfortable patient experience.
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Matthew Bolton, MD
- Phone Number: 504-495-5631
- Email: mbolt3@lsuhsc.edu
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- enrollment will be open to men and women of all ethnic backgrounds between the ages of 18-100 who are offered intravitreal injections by Dr. Anthony Mazzulla at his Retina clinic at the Ochsner Clinic Foundation as a treatment for diabetic macular edema, proliferative diabetic retinopathy, age related exudative macular degeneration, or any other cause of choroidal neovascularization or cystoid macular edema.
Exclusion Criteria:
- Current eye infection, actively treated blepharitis, current use of topical or systemic antimicrobial agents, current use of topical or systemic corticosteroids, allergy to iodine, pregnancy, children.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: 5% Betadine, Ocular Surface only
Use of 5% P-I from bottle dropper to sterilize the ocular surface only, prior to injection.
Intervention: bacterial culture swab.
|
Culture swabs will be obtained before application of PI and after injection.
|
Experimental: 10% Betadine, Ocular Surface only
Use of 10% P-I swabstick to sterilize the ocular surface only, prior to injection.
Intervention: bacterial culture swab.
|
Culture swabs will be obtained before application of PI and after injection.
|
Experimental: 10% Betadine, Ocular Surface and Adnexa
Use of 10% P-I swabstick to sterilize the ocular surface and surrounding lids and eyelashes only, prior to injection.
Intervention: bacterial culture swab.
|
Culture swabs will be obtained before application of PI and after injection.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Median Colony-Forming Units
Time Frame: 3 months
|
Median CFUs compared pre- and post-injection
|
3 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Patient's ocular surface symptoms during sterilization with povidone-iodine
Time Frame: 3 months
|
Survey-based
|
3 months
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Donald Mazzulla, MD, Ochsner Health System
Study record dates
Study Major Dates
Study Start (Anticipated)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 1162018
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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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