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Trial registered on ANZCTR
Registration number
ACTRN12615000804583
Ethics application status
Approved
Date submitted
22/07/2015
Date registered
3/08/2015
Date last updated
3/08/2015
Type of registration
Prospectively registered
Titles & IDs
Public title
Correlation between Surgical Pleth Index and acute postoperative pain in the recovery room
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Scientific title
Surgical patients: observation of intra-operative surgical pleth index and its correlation with acute postoperative pain
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Secondary ID [1]
287141
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none
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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:
acute postoperative pain
295689
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Condition category
Condition code
Anaesthesiology
295966
295966
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0
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Pain management
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Intervention/exposure
Study type
Observational
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Patient registry
False
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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
observation of surgical pleth index over the last 15 minutes of anaesthesia and observation of pain scores (on 0-10 numeric rating scale) during the first 15 minutes in the recovery room.
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Intervention code [1]
292403
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Not applicable
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Comparator / control treatment
nil
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
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Correlation between surgical pleth index scores during the last 15 min of surgery with the pain scores obtained from patients during the first 15 min of their postoperative recovery. Pain scores will be assessed using a 0 (no pain) - 10 (worst pain) numeric rating scale.
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Assessment method [1]
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Timepoint [1]
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first 15 minutes in the recovery room
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Secondary outcome [1]
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relationship between surgical pleth index and state entropy readings during emergence from anaesthesia
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Assessment method [1]
316086
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Timepoint [1]
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during emergence from anaesthesia
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Eligibility
Key inclusion criteria
Patients scheduled for elective or urgent surgery under general anaesthesia (including laryngeal mask airway [if planned to be removed in the operating theatre] or endotracheal tube, state entropy monitoring) with sevoflurane. Age: 18 -95 yrs.
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Minimum age
18
Years
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Maximum age
95
Years
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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
Incapacity to consent, age < 18 yrs, poorly treated diabetes, severe peripheral or cardiac neuropathy, pacemaker, treatment (infusion) with vasoactive medication, ketamine during the data acquisition interval, any intraoperative treatment with ketamine, beta-receptor blockers, clonidine, beta-receptor agonists (i.e. Ventolin) or any other drug suspected to interact with the sympatho-vagal balance. Surgery requiring a tourniquet (unless already deflated at start of intra-operative data acquisition interval).
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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
Level of significance: Alpha = 5%, Beta = 20%
Correlation to be detected: 0.3
67 patients are required for above parameters. We aim to include n=70 to account for missing data (i.e. withdrawal, technical difficulties).
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Recruitment
Recruitment status
Not yet recruiting
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Date of first participant enrolment
Anticipated
14/08/2015
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Actual
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Date of last participant enrolment
Anticipated
31/12/2015
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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)
WA
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Recruitment hospital [1]
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Royal Perth Hospital - Perth
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Recruitment hospital [2]
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Armadale Kelmscott Memorial Hospital - Armadale
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Recruitment postcode(s) [1]
10021
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6000 - Perth
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Recruitment postcode(s) [2]
10039
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6112 - Mount Nasura
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Funding & Sponsors
Funding source category [1]
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Self funded/Unfunded
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Name [1]
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Address [1]
291698
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Country [1]
291698
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Primary sponsor type
Individual
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Name
Thomas Ledowski
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Address
Royal Perth Hospital Dept. of Anaesthesia and Pain Medicine, Level 4 North Block, RPH
Wellington Street, Perth WA 6000
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Country
Australia
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Secondary sponsor category [1]
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Individual
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Name [1]
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Dr. Jan Hruby
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Address [1]
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Armadale Health Service, 3056 Albany Hwy
Mt. Nasura, WA, 6112
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Country [1]
290374
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Australia
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Other collaborator category [1]
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Individual
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Name [1]
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Dr. Jan Hruby
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Address [1]
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Armadale Health Service, 3056 Albany Hwy
Mt. Nasura, Western Australia, 6112
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Country [1]
278534
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Australia
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
293222
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Ethics Committee of the South Metropolitan Health Service
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Ethics committee address [1]
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SIRO Research Ethics & Governance Unit Southern Metropolitan Health Service Level 2, Southern Research Facility (Perkins Building) Fiona Stanley Hospital 102-118 Murdoch Drive MURDOCH WA 6150
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Ethics committee country [1]
293222
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Australia
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Date submitted for ethics approval [1]
293222
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Approval date [1]
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04/06/2015
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Ethics approval number [1]
293222
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15/23
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Summary
Brief summary
Surgical Pleth Index (SPI, GE Healthcare) has been suggested to be a potentially useful parameter to assess the depth of analgesia (freedom of pain) in patients under general anaesthesia. SPI is completely risk free and requires no extra monitoring as is simply uses existing data from standard anaesthesia monitoring (from peripheral oxygen saturation sensor) to calculate a 0-100 analgesia score. Though experiments have shown that SPI scores may “respond” (i.e. going up with a painful stimulus), it is unclear whether the score may be useful to predict acute postoperative pain the recovery room. Aim of this purely observational study is to monitor SPI in 70 patients scheduled for elective surgery and to observe and record SPI data during the last approx.15 minutes of surgery until the patient wakes up from anaesthesia. This data will be compared with the first 15 minutes of 3-minutely assessed postoperative pain (0-10 numeric rating scale) in the recovery room (time counting from when patients are capable of pain self-rating). All assessments of interest for this study are standard practice of intraoperative monitoring and no additional monitoring is required for this study. The sole difference to standard practice is that the data from the anaesthesia monitor will be downloaded onto a laptop PC for analysis of the correlation between SPI and postoperative acute pain scores
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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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Prof Thomas Ledowski
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Address
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Royal Perth Hospital Dept. of Anaesthesia and Pain Medicine, Level 4 North Block, RPH
Wellington Street, Perth, WA, 6000
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Country
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Australia
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Phone
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+61892241036
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Fax
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Email
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[email protected]
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Contact person for public queries
Name
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Thomas Ledowski
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Address
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Royal Perth Hospital Dept. of Anaesthesia and Pain Medicine, Level 4 North Block, RPH
Wellington Street, Perth, WA, 6000
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Country
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Australia
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Phone
58983
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+61892241036
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Fax
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Email
58983
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[email protected]
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Contact person for scientific queries
Name
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Thomas Ledowski
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Address
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Royal Perth Hospital Dept. of Anaesthesia and Pain Medicine, Level 4 North Block, RPH
Wellington Street, Perth, WA, 6000
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Country
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Australia
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Phone
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+61892241036
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Fax
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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
Source
Title
Year of Publication
DOI
Embase
Surgical pleth index: Prediction of postoperative pain and influence of arousal.
2016
https://dx.doi.org/10.1093/bja/aew226
N.B. These documents automatically identified may not have been verified by the study sponsor.
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