Oral Diclofenac for Retinal Photocoagulation in Diabetic Retinopathy

November 5, 2009 updated by: University of Sao Paulo

Analgesic Effectiveness of Potassium Diclofenac for Retinal Photocoagulation in Patients With High-risk Proliferative Diabetic Retinopathy

The purpose of this study was to evaluate the analgesic effect of oral potassium diclofenac in patients with proliferative diabetic retinopathy submitted to retinal photocoagulation.

Two groups of patients were followed and the effect of the treatment (diclofenac plus laser) was compared to placebo (placebo plus laser). Pain associated with treatment was recorded using a Visual Analog Scale 15 minutes after the procedure.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

30

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

  • Brazil
    • São Paulo
      • Ribeirão Preto, São Paulo, Brazil, 14049-900
        • Ribeirão Preto School of Medicine Clinics Hospital - USP

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • 1)high-risk proliferative diabetic retinopathy in both eyes

Exclusion Criteria:

  • 1)history of prior laser treatment or vitrectomy; 2) allergy to non-steroidal anti-inflammatory drugs; 3) any condition affecting comprehension of VAS pain score test; 4) Contra-indications for diclofenac use such as pregnancy, bleeding disorders, asthma, or renal failure; 5) use of any analgesic drug for the last 24 hours.

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: Prevention
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Placebo first (scheme 2)
scheme 2 patients (n=15) received a brown-coated tablet of saccharine (placebo) 45 minutes before the first PRP episode [placebo treatment episode (PTE)] at baseline to the right eye and two weeks after received one 50 mg tablet of potassium diclofenac 45 minutes before the second PRP episode [diclofenac treatment episode (DTE)] to the left eye
Drug: potassium diclofenac
potassium diclofenac 50 mg, one tablet 45 minutes before laser treatment
Other Names:
  • Cataflan
Other: Diclofenac first (scheme 1)
scheme 1 patients (n=15) received one 50 mg tablet of potassium diclofenac 45 minutes before the first PRP episode [diclofenac treatment episode (DTE)] at baseline to the right eye and two weeks after received an identical brown-coated tablet of saccharine (placebo) 45 minutes before the second PRP episode [placebo treatment episode (PTE)] to the left eye
Drug: potassium diclofenac
potassium diclofenac 50 mg, one tablet 45 minutes before laser treatment
Other Names:
  • Cataflan

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Pain recorded using a Visual Analog Scale
Time Frame: 15 minutes after the procedure
15 minutes after the procedure

Collaborators and Investigators

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

Sponsor

University of Sao Paulo

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

March 1, 2008

Primary Completion (Actual)

March 1, 2009

Study Completion (Actual)

March 1, 2009

Study Registration Dates

First Submitted

November 5, 2009

First Submitted That Met QC Criteria

November 5, 2009

First Posted (Estimate)

November 6, 2009

Study Record Updates

Last Update Posted (Estimate)

November 6, 2009

Last Update Submitted That Met QC Criteria

November 5, 2009

Last Verified

November 1, 2009

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • NSAID-PRP

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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