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Trial registered on ANZCTR
Registration number
ACTRN12608000187347
Ethics application status
Approved
Date submitted
3/04/2008
Date registered
11/04/2008
Date last updated
1/06/2017
Type of registration
Prospectively registered
Titles & IDs
Public title
Survival of bacteria on the ocular surface following double application of povidone-iodine before cataract surgery
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Scientific title
Survival of bacteria on the ocular surface following double application of povidone-iodine before cataract surgery
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Secondary ID [1]
292071
0
Nil known
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Endophthalmitis
2988
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Condition category
Condition code
Eye
3138
3138
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0
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Diseases / disorders of the eye
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Intervention/exposure
Study type
Observational
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Patient registry
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Target follow-up duration
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Target follow-up type
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Description of intervention(s) / exposure
Two applications of 5% povidone-iodine to the eye and surrounding skin prior to phacoemulsification cataract surgery. All patients will receive 5mL of povidone-iodine 5% solution applied via sterile swab and forceps to the conjunctival sac, lashes and periocular skin of the operative eye at time of the periorbital anaesthetic block as well as in theatre approximately 15 minutes later. Note: This is part of the standard procedure for the surgery, and NOT a new intervention.
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Intervention code [1]
2769
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Not applicable
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Comparator / control treatment
No control group - all patients receive 2 applications of povidone-iodine.
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
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Bacterial recontamination of the conjunctiva following the first application of povidone iodine. This will be assessed by comparing cultures of swabs taken after the first application of povidone-iodine, with cultures of swabs taken just prior to the second application of povidone-iodine (about 15 minutes later). Bacterial recontamination could occur during this time. Each swab specimen will be put in a 1mL container of normal saline, from which 300 microlitres (100 microlitres, 3 times separately) is removed by automatic pipette and plated on blood agar (2 plates) as well as chocolate agar (1 plate). Each plate has 100 microlitres of broth applied to it. These plates will be sent for incubation within three hours of specimen collection. Specimens plated on blood agar will be incubated at 35 degrees centigrade a) aerobically, and b) anaerobically. The specimen on chocolate agar will be incubated at 35 degrees centigrade in 5% CO2.
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Assessment method [1]
4064
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Timepoint [1]
4064
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Cultures assessed at three days
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Secondary outcome [1]
6835
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No bacterial contamination following the first application of povidone-iodine. Swabs are cultured and assessed as in primary outcome.
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Assessment method [1]
6835
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Timepoint [1]
6835
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Cultures assessed at three days
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Eligibility
Key inclusion criteria
Unilateral phacoemulsification surgery for cataract
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Minimum age
No limit
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
Allergy to povidone-iodine, active ocular infection, antibiotic therapy in preceding three weeks
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Study design
Purpose
Natural history
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Duration
Cross-sectional
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Selection
Defined population
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Timing
Prospective
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Date of first participant enrolment
Anticipated
28/04/2008
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Actual
28/04/2008
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Date of last participant enrolment
Anticipated
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Actual
23/05/2008
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Date of last data collection
Anticipated
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Actual
26/05/2008
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Sample size
Target
72
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Accrual to date
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Final
54
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Recruitment in Australia
Recruitment state(s)
SA
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Recruitment hospital [1]
8203
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The Queen Elizabeth Hospital - Woodville
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Recruitment hospital [2]
8204
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Stirling District Hospital - Stirling
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Recruitment postcode(s) [1]
16262
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5011 - Woodville
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Recruitment postcode(s) [2]
16263
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5152 - Stirling
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Funding & Sponsors
Funding source category [1]
3257
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Hospital
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Name [1]
3257
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The Queen Elizabeth Hospital
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Address [1]
3257
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28 Woodville Rd, Woodville South, SA 5011
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Country [1]
3257
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Australia
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Primary sponsor type
Hospital
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Name
The Queen Elizabeth Hospital
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Address
28 Woodville Rd, Woodville South, SA 5011
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Country
Australia
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Secondary sponsor category [1]
2935
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None
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Name [1]
2935
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Address [1]
2935
0
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Country [1]
2935
0
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
5239
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Ethics of Human Research Committee (TQEH)
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Ethics committee address [1]
5239
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28 Woodville Rd, Woodville South, SA 5011
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Ethics committee country [1]
5239
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Australia
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Date submitted for ethics approval [1]
5239
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07/04/2008
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Approval date [1]
5239
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14/04/2008
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Ethics approval number [1]
5239
0
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Summary
Brief summary
To assess the incidence of positive preoperative conjunctival cultures with two (at time of periorbital anaesthetic block and in theatre approximately 15 minutes later) in comparison with one (at time of the anaesthetic block only) applications of 5% povidone-iodine solution to the operative eye before phacoemulsification cataract surgery. Ultimately to assess whether microbial recontamination occurs after the initial application of povidone-iodine, and thus whether two applications of povidone-iodine are necessary in order to reduce the rate of positive preoperative conjunctival cultures.
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Trial website
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Trial related presentations / publications
Stranz C, Fraenkel G, Butcher A, Esterman A, Goggin M. Survival of bacteria on the ocular surface following double application of povidone-iodine before cataract surgery. Eye (Lond) 2011; 25 (11): 1423-1428.
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Public notes
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Contacts
Principal investigator
Name
28484
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Dr Conrad Stranz
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Address
28484
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c/o
East Adelaide Medical Centre
50 Hutt Street
Adelaide SA 5000
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Country
28484
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Australia
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Phone
28484
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+61 8 8210 9488
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Fax
28484
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Email
28484
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[email protected]
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Contact person for public queries
Name
11641
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Conrad Stranz
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Address
11641
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c/o
East Adelaide Medical Centre
50 Hutt Street
Adelaide SA 5000
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Country
11641
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Australia
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Phone
11641
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+61 8 8210 9488
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Fax
11641
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Email
11641
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[email protected]
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Contact person for scientific queries
Name
2569
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Conrad Stranz
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Address
2569
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c/o
East Adelaide Medical Centre
50 Hutt Street
Adelaide SA 5000
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Country
2569
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Australia
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Phone
2569
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+61 8 8210 9488
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Fax
2569
0
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Email
2569
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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