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Trial registered on ANZCTR
Registration number
ACTRN12606000106538
Ethics application status
Approved
Date submitted
8/03/2006
Date registered
23/03/2006
Date last updated
23/03/2006
Type of registration
Prospectively registered
Titles & IDs
Public title
Prediction of obstructed breathing after elective surgery.
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Scientific title
A case control study using 12 hour continuous respiratory monitoring to assess the prediction of frequent upper airway obstructions after elective surgery by preoperative airway evaluation and risk score for obstruvtive sleep apnoea.
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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:
Obstructive sleep apnoea
1069
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Postoperative respiratory obstruction
1070
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Condition category
Condition code
Respiratory
1150
1150
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0
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Sleep apnoea
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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
Continuous respiratory monitoring 8 hours with Somte portable monitor. Identification of risk factors at pre-operative assessment.
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Intervention code [1]
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None
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Comparator / control treatment
No comparator.
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Control group
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Outcomes
Primary outcome [1]
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Frequency of respiratory events per hour.
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Assessment method [1]
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Timepoint [1]
1546
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Per hour.
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Secondary outcome [1]
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Association with OSA risk factors and airway examination.
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Assessment method [1]
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Timepoint [1]
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Risk factors will be evaluated at the preoperative clinic, 1-2 weeks prior to surgery.
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Secondary outcome [2]
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Continuous respiratory monitoring.
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Assessment method [2]
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Timepoint [2]
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Applied for 12 hours, commencing in the postoperative recovery area.
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Eligibility
Key inclusion criteria
Assessed prior to elective surgery, able to provide informed consent.
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Minimum age
18
Years
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Maximum age
Not stated
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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
Cardiac or thoracic surgery, elective postoperative ventilation, previous diagnosis of obstructive sleep apnoea and use of CPAP, day or short-stay surgery.
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Study design
Purpose
Screening
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Duration
Longitudinal
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Selection
Case control
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Timing
Prospective
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Statistical methods / analysis
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Recruitment
Recruitment status
Not yet recruiting
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Date of first participant enrolment
Anticipated
1/05/2006
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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
70
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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]
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Hospital
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Name [1]
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Royal Melbourne Hospital, Hospital auxilliary
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Address [1]
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Country [1]
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Australia
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Primary sponsor type
Hospital
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Name
Department of Anaesthesia
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Address
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Country
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Secondary sponsor category [1]
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Hospital
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Name [1]
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Royal Melbourne Hospital
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Address [1]
1114
0
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Country [1]
1114
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Australia
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Ethics approval
Ethics application status
Approved
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Summary
Brief summary
Up to 20% of patients over 50yr presenting for elective surgery may have episodes of obstructed breathing e.g. snoring, which is likely to worsen and become a significant risk after surgery. Use of a recorder to continuously monitor breathing for the 12 hours immediately after surgery may help us to identify the most useful risk factors to look for during the assessment of patients at the clinic prior to surgery.
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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
35560
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Email
35560
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Contact person for public queries
Name
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Dr Duncan W Blake
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Address
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Department of Anaesthesia
Royal Melbourne Hospital
Grattan St
Parkville VIC 3050
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Country
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Australia
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Phone
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+61 3 93427925
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Fax
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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 Duncan W Blake
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Address
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Department of Anaesthesia
Royal Melbourne Hospital
Grattan St
Parkville VIC 3050
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Country
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Australia
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Phone
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+61 3 93427925
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Fax
1048
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Email
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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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