Oral Diclofenac for Retinal Photocoagulation in Diabetic Retinopathy

This study has been completed.
Sponsor:
Information provided by:
University of Sao Paulo
ClinicalTrials.gov Identifier:
NCT01009021
First received: November 5, 2009
Last updated: NA
Last verified: November 2009
History: No changes posted
  Purpose

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.


Condition Intervention
Pain
Drug: potassium diclofenac

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Crossover Assignment
Masking: Double Blind (Subject, Caregiver)
Primary Purpose: Prevention
Official Title: Analgesic Effectiveness of Potassium Diclofenac for Retinal Photocoagulation in Patients With High-risk Proliferative Diabetic Retinopathy

Resource links provided by NLM:


Further study details as provided by University of Sao Paulo:

Primary Outcome Measures:
  • Pain recorded using a Visual Analog Scale [ Time Frame: 15 minutes after the procedure ] [ Designated as safety issue: No ]

Enrollment: 30
Study Start Date: March 2008
Study Completion Date: March 2009
Primary Completion Date: March 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
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 Name: Cataflan
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 Name: Cataflan

  Eligibility

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

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.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01009021

Locations
Brazil
Ribeirão Preto School of Medicine Clinics Hospital - USP
Ribeirão Preto, São Paulo, Brazil, 14049-900
Sponsors and Collaborators
University of Sao Paulo
  More Information

No publications provided by University of Sao Paulo

Additional publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Rodrigo Jorge, University of Sao Paulo Professor
ClinicalTrials.gov Identifier: NCT01009021     History of Changes
Other Study ID Numbers: NSAID-PRP
Study First Received: November 5, 2009
Last Updated: November 5, 2009
Health Authority: Brazil: National Committee of Ethics in Research

Keywords provided by University of Sao Paulo:
pain
retinal photocoagulation
potassium diclofenac

Additional relevant MeSH terms:
Diabetic Retinopathy
Retinal Diseases
Eye Diseases
Diabetic Angiopathies
Vascular Diseases
Cardiovascular Diseases
Diabetes Complications
Diabetes Mellitus
Endocrine System Diseases
Diclofenac
Anti-Inflammatory Agents, Non-Steroidal
Analgesics, Non-Narcotic
Analgesics
Sensory System Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Pharmacologic Actions
Anti-Inflammatory Agents
Therapeutic Uses
Antirheumatic Agents
Cyclooxygenase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Central Nervous System Agents

ClinicalTrials.gov processed this record on September 22, 2014