Effect of Intravitreal Bevacizumab on Early Post-Vitrectomy Hemorrhage in Diabetic Patients

September 4, 2007 updated by: Shahid Beheshti University of Medical Sciences
The purpose of this study is to determine whether bevacizumab 1-2 weeks before vitrectomy is effective in lowering the rate of early post-vitrectomy vitreous hemorrhage in diabetic patients.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Diabetes is the leading cause of blindness in the age range of 20-64 years. Pars plana vitrectomy may be indicated for the management of advanced proliferative diabetic retinopathy. Early post-vitrectomy hemorrhage in diabetic patients is relatively common; it occurs in 29% -75% of patients in the first month after surgery. This may cause delayed visual rehabilitation and detection of surgical complications such as retinal break or detachment. Preliminary reports such as case series reported by Spaide RF, et al showed beneficial effect of bevacizumab in proliferative diabetic retinopathy complicated by vitreous hemorrhage.

Study Type

Interventional

Enrollment (Anticipated)

80

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

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

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • All eyes who are candidate for pars plana vitrectomy because of complications of diabetic retinopathy such as nonclearing vitreous hemorrhage, tractional retinal detachment threatening macula, active progressive PDR

Exclusion Criteria:

  • One eye patient
  • Best corrected visual acuity better than 20/50
  • Pregnancy
  • Use of internal tamponade such as silicone oil during surgery
  • Concurrent ophthalmic surgery such as cataract extraction

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: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: 1
Intravitreal bevacizumab injection 1-2 weeks before surgery
Drug: Bevacizumab
One dose of bevacizumab (1.25 mg/0.05 cc) one to two weeks before pars plana vitrectomy for diabetic retinopathy
Sham Comparator: 2
Sham injection (needleless syringe pressed against conjunctiva)
Drug: Bevacizumab
One dose of bevacizumab (1.25 mg/0.05 cc) one to two weeks before pars plana vitrectomy for diabetic retinopathy

What is the study measuring?

Primary Outcome Measures

Outcome Measure
early post-vitrectomy vitreous hemorrhage

Secondary Outcome Measures

Outcome Measure
Visual improvement

Collaborators and Investigators

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

Sponsor

Shahid Beheshti University of Medical Sciences

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

January 1, 2007

Study Completion (Anticipated)

September 1, 2007

Study Registration Dates

First Submitted

September 4, 2007

First Submitted That Met QC Criteria

September 4, 2007

First Posted (Estimate)

September 5, 2007

Study Record Updates

Last Update Posted (Estimate)

September 5, 2007

Last Update Submitted That Met QC Criteria

September 4, 2007

Last Verified

August 1, 2007

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 8657

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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