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Trial registered on ANZCTR
Registration number
ACTRN12616000625471
Ethics application status
Approved
Date submitted
20/01/2016
Date registered
13/05/2016
Date last updated
13/05/2016
Type of registration
Retrospectively registered
Titles & IDs
Public title
The effect of spontaneous ventilation with mask on tissue oxygenation in parturients undergoing cesarean section under spinal anesthesia;
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Scientific title
The effect of spontaneous ventilation with venturi mask on tissue oxygenation in parturients undergoing cesarean section under spinal anesthesia; a randomized controlled study
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Secondary ID [1]
286391
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none
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Universal Trial Number (UTN)
U1111-1168-3483
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Trial acronym
VMTOCSSA
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
otherwise healthy parturients planned for cesarean section
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Condition category
Condition code
Anaesthesiology
297733
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0
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Other anaesthesiology
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
All patients will randomized with the closed envelope method.
All patients will be monitored and the basal vital functions (HR, SpO2, NIBP and StO2) will be recorded with admission into the OR.
All patients will placed into a sitting position and spinal anesthesia will be performed with a median approach, at a level of L3-L4, with a 25 G Quincke type spinal needle and 2.5 ml hyperbaric bupivacaine.
After succesful administration of anesthesia, all patients will be placed into supine position, monitored and administered oxygene via a venturi mask after administration of spinal anesthesia until the completion of surgery in different inspirated fractions (31%, 40% and 60%) and all vital functions will be recorded (HR, SpO2, NIBP and StO2) after spinal anesthesia (in minute 1, 3 and 5), with the beginning of surgery (in minute 5, 10, 15, 20, 25, 30 and 40), after the end of surgery (in minute 5, 10, 15, 30 and 60) and in the 24th hour postoperatively
Beside this, hemoglobin levels will be evaluated preoperatively, during surgery and postoperatively in the 30th and 60th minute, by a noninvasive continuous monitoring device.
Spinal block levels, duration of surgery, APGAR scores, vasopressor consumption will be recorded.
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Intervention code [1]
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Prevention
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Comparator / control treatment
patients will allocate to three group
first group: breathe 31% oxygen group (n=30) (CONTROL GROUP)
second group: breath 40% oxygen group (n=30)
third group: breath 60% oxygen group (n=30)
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Control group
Dose comparison
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Outcomes
Primary outcome [1]
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The impact of different inspiratory fractions of oxygene on tissue oxygenation assessed by the InSpectra tissue spectrometer (Hutchinson technology, Hutchinson, MN, USA) is the primary goal of the study.
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Assessment method [1]
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Timepoint [1]
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StO2 will be assessed at admission to OR, after spinal anesthesia (in minute 1, 3 and 5), with the beginning of surgery (in minute 5, 10, 15, 20, 25, 30 and 40), after the end of surgery (in minute 5, 10, 15, 30 and 60) and in the 24th hour postoperatively.
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Secondary outcome [1]
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The impact of different inspiratory fractions of oxygen on pediatric APGAR scores which will be evaluated in the OR after delivery by a pediatrist.
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Assessment method [1]
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Timepoint [1]
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APGAR scores in 1 minute and 5 minutes after delivery
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Eligibility
Key inclusion criteria
ASA physical status I–II term parturients
undergoing elective CS under spinal anesthesia
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Minimum age
18
Years
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Maximum age
45
Years
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Sex
Females
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
ASA status; > II
Coexisting disease; metabolic, endocrine, hepatic, cardiac or renal diseases, malignancies, preeclampsia; hypertension;
Concurrent medication used; or recent use (within 48h) of any drug with anti-oxidant properties such as nebivolol, carvedilol, vitamins E and C, or acetylcysteine
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Study design
Purpose of the study
Prevention
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
numbered containers
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Simple randomization using procedures like coin-tossing and dice-rolling
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
The people administering the treatment/s
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Intervention assignment
Parallel
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Other design features
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Phase
Not Applicable
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Type of endpoint/s
Safety/efficacy
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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
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Actual
1/01/2016
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Date of last participant enrolment
Anticipated
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Actual
29/04/2016
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
60
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Accrual to date
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Final
60
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Recruitment outside Australia
Country [1]
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Turkey
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State/province [1]
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SANLIURFA
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Funding & Sponsors
Funding source category [1]
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University
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Name [1]
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Harran University
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Address [1]
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Harran University School of Medicine, Research and Training Hospital.
Meteoroloji ROAD, 101.STREET, Post code: 63100,
HALILIYE, SANLIURFA, TURKEY
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Country [1]
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Turkey
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Primary sponsor type
Hospital
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Name
Harran University School of Medicine, Research and Training Hospital
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Address
Harran University School of Medicine, Research and Training Hospital.
Meteoroloji ROAD, 101.STREET, Post code: 63100,
HALILIYE, SANLIURFA, TURKEY
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Country
Turkey
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Secondary sponsor category [1]
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None
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Name [1]
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Address [1]
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Country [1]
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Harran university medical faculty ethics committe
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Ethics committee address [1]
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Harran University medical school yenisehir campus 63300 sanliurfa/Turkey
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Ethics committee country [1]
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Turkey
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Date submitted for ethics approval [1]
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12/02/2015
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Approval date [1]
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13/02/2015
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Ethics approval number [1]
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74059997.050.01.04/045
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Summary
Brief summary
During spinal, changes in respiratory function occur and resulting in impaired maternal-foetal gas exchange so that oxygen supplementation is commonly given to prevent maternal oxyhaemoglobin desaturation and to optimize fetal oxygenation. Changes in lung capacity, the mother and the fetus also causes decreased oxygen delivery to both uteroplacental hypoperfusion and fetal distress. However, the optimal maternal and intrauterine foetal arterial oxygen content before delivery during a routine caesarean section is not known. Many pregnant women are empirically given supplemental oxygen intraoperatively at least until the delivery of the baby. In addition, oxygen is a potentially toxic substance and could conceivably present a risk to both fetus and mother. For these reasons, it is important to establish whether health benefits may be derived from the use of oxygen for this purpose. We aimed to investigate the effect of 31%, 40% and 60% oxygen supplementation on maternal tissue oxygenation in elective cesarean section (CS) under spinal anesthesia.
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Trial website
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Trial related presentations / publications
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Public notes
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Attachments [1]
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/AnzctrAttachments/368085-ETI?K KURUL-1.pdf
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Attachments [2]
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/AnzctrAttachments/368085-ETI?K KURUL-2.pdf
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Attachments [3]
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/AnzctrAttachments/368085-clinical record form.doc
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Contacts
Principal investigator
Name
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A/Prof Mahmut Alp Karahan
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Address
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Harran university medical faculty research and training hospital 63100 Haliliye sanliurfa TURKEY
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Country
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Turkey
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Phone
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+905327808997
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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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A/Prof Mahmut Alp Karahan
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Address
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Harran university medical faculty research and training hospital 63100 Haliliye sanliurfa TURKEY
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Country
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Turkey
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Phone
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+905327808997
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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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A/Prof mahmut alp karahan
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Address
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Harran university medical faculty research and training hospital 63100 Haliliye sanliurfa TURKEY
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Country
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Turkey
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Phone
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+905327808997
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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
No additional documents have been identified.
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