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Trial registered on ANZCTR
Registration number
ACTRN12611001161910
Ethics application status
Approved
Date submitted
4/11/2011
Date registered
7/11/2011
Date last updated
7/11/2011
Type of registration
Retrospectively registered
Titles & IDs
Public title
Eye surgery under regional anaesthesia - what's going on beneath the drapes?
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Scientific title
Novel oxygen delivery system to elective opthalmic surgery patients comparing inspired oxygen & carbon dioxide and end-tidal carbon dioxide levels under the surgical drapes & their effect on patient's vital signs.
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Secondary ID [1]
273330
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Nil
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Universal Trial Number (UTN)
U1111-1125-6592
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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:
Level of inspired oxygen under drapes used for elective opthalmic surgical procedures.
279099
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Level of inspired carbon dioxide under drapes used for elective opthalmic surgical procedures.
279103
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Level of end-tidal carbon dioxide under drapes used for elective opthalmic surgical procedures.
279104
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Condition category
Condition code
Anaesthesiology
279290
279290
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0
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Anaesthetics
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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
Observational pilot study.
Patients undergoing elective ophthalmic operations under regional anaesthesia were enrolled in this study after informed consent.
Standard, waterproof ophthalmic drapes were used to cover the patients during the procedure and oxygen was administered via a modified plastic canister at a flow rate of 6L/min.
In this study we characterise this elderly population and show patients are exposed to an increased FiO2, FiCO2 and EtCO2 as the operation progressed without adverse events.
The overall duration of the study was 3 months.
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Intervention code [1]
283677
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Not applicable
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Comparator / control treatment
This current observational pilot study referred to looks at the oxygen delivery system used at our institution.
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
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Primary outcome: Inspired oxygen (FiO2) level under surgical drapes.
Assessed with gas monitoring line under surgical drape.
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Assessment method [1]
279906
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Timepoint [1]
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Time interval: at 5-10 min intervals until cessation of surgical procedure.
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Primary outcome [2]
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Primary outcome: Inspired & End-tidal carbon dioxide level under surgical drapes.
Assessed with gas monitoring line under surgical drape.
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Assessment method [2]
279915
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Timepoint [2]
279915
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Time interval: at 5-10 min intervals until cessation of surgical procedure.
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Primary outcome [3]
279916
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Primary outcome: Inspired and end-tidal carbon dioxide level under surgical drapes.
Assessed with gas monitoring line under surgical drape.
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Assessment method [3]
279916
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Timepoint [3]
279916
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Time interval: at 5-10 min intervals until cessation of surgical procedure.
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Secondary outcome [1]
294745
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Secondary outcome: Patient's oxygen saturation (SaO2) and mean arterial blood pressure (MAP)
Assessed with pulse oximeter.
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Assessment method [1]
294745
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Timepoint [1]
294745
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Time interval: at 5-10 min intervals until cessation of surgical procedure
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Secondary outcome [2]
294771
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Secondary outcome: Patient's heart & respiratory rate (HR & RR).
Assessed with ECG monitor and clinical assessment.
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Assessment method [2]
294771
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Timepoint [2]
294771
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Time interval: at 5-10 min intervals until cessation of surgical procedure
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Eligibility
Key inclusion criteria
Patients were included in the study if they were undergoing ophthalmic surgery under regional or topical anaesthesia, over 18 and able to give informed consent.
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Minimum age
18
Years
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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
None elective opthalmic surgery
No informed consent
General anaesthesia
Contra-indication to regional opthalmic anaesthesia
Inability to lie flat & still for operation duration
Under 18 years
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Study design
Purpose
Natural history
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Duration
Longitudinal
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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
1/07/2010
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Actual
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
34
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
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Funding & Sponsors
Funding source category [1]
284158
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Hospital
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Name [1]
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Department of Anaesthesia, Fremantle Hospital, WA
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Address [1]
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Fremantle Hospital
Alma Street
Fremantle
WA 6160
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Country [1]
284158
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Australia
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Primary sponsor type
Hospital
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Name
Department of Anaesthesia, Fremantle Hospital, WA
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Address
Fremantle Hospital
Alma Street
Fremantle
WA 6160
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Country
Australia
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Secondary sponsor category [1]
269116
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None
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Name [1]
269116
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Address [1]
269116
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Country [1]
269116
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
272120
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South Metropolitan Area Health Service
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Ethics committee address [1]
272120
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Fremantle Hospital
Alma Street
Fremantle
WA 6160
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Ethics committee country [1]
272120
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Australia
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Date submitted for ethics approval [1]
272120
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01/05/2010
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Approval date [1]
272120
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01/06/2010
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Ethics approval number [1]
272120
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Summary
Brief summary
Thirty four patients undergoing elective ophthalmic operations under regional anaesthesia were enrolled in this study after informed consent. Standard, waterproof ophthalmic drapes were used to cover the patients during the procedure and oxygen was administered via a modified plastic canister at a flow rate of 6L/min. In this study we characterise this elderly population and show patients are exposed to an increased inspired oxygen (FiO2), inspired carbon dioxide (FiCO2) and end-tidal carbon dioxide (EtCO2) level. The operation progressed without adverse events.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Address
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Country
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Phone
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Fax
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Email
33353
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Contact person for public queries
Name
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Dr Laura Tarry
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Address
16600
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Department of Anaesthesia
Fremantle Hospital
Alma Street
Fremantle
WA 6160
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Country
16600
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Australia
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Phone
16600
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+61894312551
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Fax
16600
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Email
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[email protected]
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Contact person for scientific queries
Name
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Dr Edmond O'Loughlin
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Address
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Department of Anaesthesia
Fremantle Hospital
Alma Street
Fremantle
WA 6160
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Country
7528
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Australia
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Phone
7528
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+61894312551
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Fax
7528
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Email
7528
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Edmond.O'
[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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