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Trial registered on ANZCTR
Registration number
ACTRN12618000506291
Ethics application status
Approved
Date submitted
19/12/2017
Date registered
6/04/2018
Date last updated
6/04/2018
Type of registration
Retrospectively registered
Titles & IDs
Public title
In hypertensive patients; effect of induction of anesthesia on cerebral tissue oxygen saturation
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Scientific title
In hypertensive patients; effect of induction of anesthesia on cerebral tissue oxygen saturation
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Secondary ID [1]
293635
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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:
hypertension
305909
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Condition category
Condition code
Anaesthesiology
305103
305103
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0
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Anaesthetics
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Cardiovascular
305104
305104
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0
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Hypertension
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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
The patients ' demographic data will be recorded. 200 patients who will undergo general anaesthesia will be included in the study. Patients will be allocated to two groups with and without hypertension. Patients will be taken to the operating room after they receive their consents and demographic information. As a standard, noninvasive blood pressure, SpO2 and ECG will be monitored. Cerebral oxygenation will be monitored with near-infrared spectroscopy pallets placed on patients' foreheads. Standard general anaesthesia induction will be performed by the patient's anesthesiologist. Heart rate, blood pressure, SpO2, endtidal CO2, and cerebral oxygen saturation will be recorded by the investigator at pre-induction, post-induction, post-intubation and until surgical initiation with intervals of 5 minutes. Patients with hypertension; the duration of the hypertension, the antihypertensive medication used, and the last taken time information received. General anaesthetic drugs applied to the patient will be recorded. Follow-up of the patient will be terminated after initiation of surgery.
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Intervention code [1]
299897
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Early Detection / Screening
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Comparator / control treatment
100 patients without hypertension will be taken as a control group. The same steps as the hypertensive group will be included in the study.
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Control group
Active
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Outcomes
Primary outcome [1]
304273
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Change of cerebral tissue oxygen saturation of patients with hypotension after anaesthesia induction. Calculated using low frequency haemoglobin oscillations measured using near infrared spectroscopy
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Assessment method [1]
304273
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Timepoint [1]
304273
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Before induction, After induction, After intubation, At 5 minutes after induction, At 10 minutes after induction, At 15 minutes after induction (primary outcome).
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Secondary outcome [1]
343002
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Change in blood pressure during anaesthesia induction. We are using an automatic sphygmomanometer
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Assessment method [1]
343002
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Timepoint [1]
343002
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Before induction
After induction
After intubation
At 5 minutes after induction
At 10 minutes after induction
At 15 minutes after induction
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Eligibility
Key inclusion criteria
over 18 years
ASA I-III
Those who undergo general anesthesia
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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
Under 18 years old
ASA IV-VI
Emergency Patients
Hemodynamically unstable patients
Pregnant women
Those with cerebrovascular disease
Cranial Surgery
Carotid stenosis and carotid operation
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Study design
Purpose
Screening
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Duration
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Selection
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Timing
Prospective
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Statistical methods / analysis
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Recruitment
Recruitment status
Recruiting
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Date of first participant enrolment
Anticipated
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Actual
15/01/2018
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Date of last participant enrolment
Anticipated
31/05/2018
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Actual
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Date of last data collection
Anticipated
31/05/2018
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Actual
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Sample size
Target
200
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Accrual to date
60
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Final
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Recruitment outside Australia
Country [1]
9447
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Turkey
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State/province [1]
9447
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ANKARA
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Funding & Sponsors
Funding source category [1]
298255
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Self funded/Unfunded
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Name [1]
298255
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YASIN TASKALDIRAN
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Address [1]
298255
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Dr.Abdurrahman Yurtaslan Ankara Onkology Education and Research Hospital Clinic of Anesthesiology and Reanimation
Mehmet Akif Ersoy Neighborhood /13. Street/06200 Yenimahalle/Ankara
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Country [1]
298255
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Turkey
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Funding source category [2]
298257
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Self funded/Unfunded
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Name [2]
298257
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ÖZLEM SEN
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Address [2]
298257
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Dr.Abdurrahman Yurtaslan Ankara Onkology Education and Research Hospital Clinic of Anesthesiology and Reanimation
Mehmet Akif Ersoy Neighborhood /13. Street/06200 Yenimahalle/Ankara
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Country [2]
298257
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Turkey
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Primary sponsor type
Individual
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Name
YASIN TASKALDIRAN
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Address
Dr.Abdurrahman Yurtaslan Ankara Onkology Education and Research Hospital Clinic of Anesthesiology and Reanimation
Mehmet Akif Ersoy Neighborhood /13. Street/06200 Yenimahalle/Ankara
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Country
Turkey
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Secondary sponsor category [1]
297367
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Individual
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Name [1]
297367
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OZLEM SEN
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Address [1]
297367
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Dr.Abdurrahman Yurtaslan Ankara Onkology Education and Research Hospital Clinic of Anesthesiology and Reanimation
Mehmet Akif Ersoy Neighborhood /13. Street/06200 Yenimahalle/Ankara
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Country [1]
297367
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Turkey
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
299258
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Dr.Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital Ethics Committee
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Ethics committee address [1]
299258
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Dr.Abdurrahman Yurtaslan Ankara Onkology Education and Research Hospital Mehmet Akif Ersoy Neighborhood /13. Street/06200 Yenimahalle/Ankara
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Ethics committee country [1]
299258
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Turkey
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Date submitted for ethics approval [1]
299258
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27/11/2017
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Approval date [1]
299258
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05/12/2017
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Ethics approval number [1]
299258
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2017-12/02
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Summary
Brief summary
Hemodynamic changes can be seen during induction of general anaesthesia. Especially hypotension occurs. Althought there are several factors in determining the perfusion of cerebral tissue, the most important one is mean arterial blood pressure. In a study performed, cerebral tissue oxygen saturation was evaluated after induction of anaesthesia and there was no change in cerebral tissue oxygen saturation despite hypotension in patients. Cerebral tissue perfusion can be maintained at a constant current due to autoregulation against changes in mean arterial pressure. However, cerebral tissue perfusion in hypertensive patients is becoming more susceptible to changes in mean arterial blood pressure. The mean arterial pressure must be higher in order to maintain the cerebral tissue perfusion constant. In the light of this information, we also aim to investigate the hemodynamic changes that may occur during anaesthesia induction, the cerebral tissue oxygen saturation in hypertensive patients and hence the effect on cerebral tissue perfusion.
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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
79818
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Dr YASIN TASKALDIRAN
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Address
79818
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Dr. Abdurrahman Yurtaslan Oncology Training Education Hospital Clinic of Anesthesiology and Reanimation
Mehmet Akif Ersoy Neighborhood /13. Street/06200 Yenimahalle/Ankara
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Country
79818
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Turkey
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Phone
79818
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+905342525487
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Fax
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Email
79818
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[email protected]
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Contact person for public queries
Name
79819
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OZLEM SEN
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Address
79819
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Dr. Abdurrahman Yurtaslan Oncology Training Education Hospital Clinic of Anesthesiology and Reanimation
Mehmet Akif Ersoy Neighborhood /13. Street/06200 Yenimahalle/Ankara
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Country
79819
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Turkey
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Phone
79819
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+905063591751
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Fax
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Email
79819
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[email protected]
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Contact person for scientific queries
Name
79820
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YASIN TASKALDIRAN
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Address
79820
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Dr. Abdurrahman Yurtaslan Oncology Training Education Hospital Clinic of Anesthesiology and Reanimation
Mehmet Akif Ersoy Neighborhood /13. Street/06200 Yenimahalle/Ankara
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Country
79820
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Turkey
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Phone
79820
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+905342525487
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Fax
79820
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Email
79820
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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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