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Trial registered on ANZCTR
Registration number
ACTRN12617000676314
Ethics application status
Approved
Date submitted
24/03/2017
Date registered
11/05/2017
Date last updated
11/05/2017
Type of registration
Retrospectively registered
Titles & IDs
Public title
spinal anesthesia decreases ocular pressure in patients with leg surgery
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Scientific title
The Effects Of Tourniquet On Intraocular Pressure During Lower Extremity Surgery Under Spinal Anesthesia
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Secondary ID [1]
291532
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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:
leg pathologies
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intraocular pressure
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Condition category
Condition code
Anaesthesiology
302147
302147
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0
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Other anaesthesiology
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Eye
302243
302243
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0
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Normal eye development and function
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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
measurement of intraocular pressure in patients who went on lower extremity surgery under spinal anesthesia (with or without tourniquet),Tuorniquet were used in 30 patients and were not used in other 30 patients.Participants observed once immediately prior to anaesthesia, and again 3 different times during surgery and at the end of surgery.The use of tourniquet was decided by surgeon.
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Intervention code [1]
297603
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Not applicable
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Comparator / control treatment
Comparison of intraocular pressure measurement in patients with or without tourniquet
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Control group
Active
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Outcomes
Primary outcome [1]
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Change in intraocular pressure(IOP) with spinal anesthesia with or without tourniquet was assessed with tonometer(Reichert Tono-Pen AVIA-Registered Trademark' Applanation Tonometer).
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Assessment method [1]
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Timepoint [1]
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end of surgery
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Secondary outcome [1]
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effect of tourniquet on intraocular pressure during spinal anesthesia, intraocular pressure was measured with contact tonometer, patients were informed before the measurement.
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Assessment method [1]
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Timepoint [1]
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IOP was recorded 5 minutes before spinal anesthesia (T1) , 5 minutes after spinal anesthesia (T2), when operation started (T3)(5 minutes after tourniquet inflated in tourniquet group and 5 minutes after T2 in group without tourniquet) and at the end of the surgery (T4).
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Eligibility
Key inclusion criteria
After approval by Ethics Committee and written informed consent from the patients,
ASA physical status I-II patients
Aged 18-65 years
Elective lower extremity surgery were included in the study
patients who were operated under spinal anesthesia
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Minimum age
18
Years
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Maximum age
65
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
Chronic diseases except regular hypertension
Known allergies to any anesthetic drugs used in the study
Eye disease or surgery in the medical history
Any contrendications for spinal anesthesia
Estimated tourniquet time more 120 min
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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
.Student T test was used for the normal ranged data
Mann Whitney U test was used for data that was except of the normal range.
Categorical data was compared with Chi-square test. p<0.05 was accepted as significant.Data was analyzed using SPSS 16 software.
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Recruitment
Recruitment status
Completed
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Date of first participant enrolment
Anticipated
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Actual
1/01/2013
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Date of last participant enrolment
Anticipated
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Actual
1/04/2013
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Date of last data collection
Anticipated
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Actual
1/04/2014
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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]
8765
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Turkey
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State/province [1]
8765
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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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selcuk university hospital
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Address [1]
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Ardicli Mahallesi, Ismet Pasa Cd., 42250 Selcuklu/Konya
TURKEY
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Country [1]
296021
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Turkey
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Primary sponsor type
Hospital
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Name
selcuk university hospital
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Address
Ardicli Mahallesi, Ismet Pasa Cd., 42250 Selcuklu/Konya
TURKEY
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Country
Turkey
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Secondary sponsor category [1]
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Hospital
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Name [1]
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selcuk university hospital
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Address [1]
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Ardicli Mahallesi, Ismet Pasa Cd., 42250 Selcuklu/Konya
TURKEY
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Country [1]
294911
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Turkey
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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selcuk university hospital comitte of ethics
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Ethics committee address [1]
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Ardicli Mahallesi, Ismet Pasa Cd., 42250 Selcuklu/Konya
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Ethics committee country [1]
297283
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Turkey
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Date submitted for ethics approval [1]
297283
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31/07/2012
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Approval date [1]
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09/08/2012
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Ethics approval number [1]
297283
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2012/34
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Summary
Brief summary
Background: There are many factors which may effect intraocular pressure.Tourniquet, which is used in extremity surgery, also effect intraoculary pressure.There many studies about the effect of tourniquet on intraocular pressure, that were performed in patients went on general anesthesia.There was no study about the effect of tourniquet on intraoculary pressure that was performed in patients who go on spinal anethesia. Material and methods : Intraocular pressure was measured on patients who went on lower extremity surgery with or without tourniquet under spinal anesthesia.Measurements were performed before spinal anethesia, 5 minutes after spinal anethesia, 5 minutes after surgery started and at the end of the surgery.All measurements were performed in the supine position.Mean arterial blood pressure, heart rate, intraocular pressure and bleeding volumes were recorded. Results: In both groups, 5 minutes after spinal anesthesia intraocular pressure measurements were lower than the baseline intraocular pressure measurements.However, the measurements which were performed after tourniquet insufflation were higher than the baseline. Conclusion:Intraocular pressure decreases in patient who went on spinal anesthesia but, tourquet insufflation increases intraocular pressure also in patients who went lower extremity surgery with tourniquet.
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Trial website
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Trial related presentations / publications
1.Hunt K , Bajekal K , Calder I , Meacher R , Eliahoo J , Acheson J F , Changes in Intraocular Pressure in Anesthetized Prone Patients , J Neurosurg Anesthesiol Volume 16, Number 4, October 2004 2. Bulut N G , Karaaslan K , Ozturan K E , Cakici H , Kocoglu H , The Effects of Tourniquet on Intraocular Pressure During Knee Surgery , M.E.J. Anesth 21 (1), 2011;93-97 3.Arai Y P, Ogata J, Matsumoto Y, Yonemura H, Kido K, Uchida T, Ueda W, Preoperative stellate ganglion blockade prevents tourniquet induced hypertension during general anesthesia, Acta Anaesthesiol Scand 2004; 48: 613—618 4. Jaen Diaz Ji , Cordero Garcia B , Lopez de Castro F , De Castro Mesa C , Castilla Lopez Madridejos F , Berciano Martinez F , Diurnal variability of intraocular pressure Arch Soc Esp Oftalmol 2007; 82: 675-680 5.Marcus D F , Krupin T , Podos S M , Becker B , The effect of exercise on intraoculer pressure , Investigative ophthalmology ,1970 oct 9:749-752 6. M.A. Moura, L.O.C. Rodrigues, Y. Waisberg, H.G. de Almeida, E. Silami Garcia Effects of submaximal exercise with water ingestion on intraocular pressure in healthy human males Brazilian Journal of Medical and Biological Research (2002) 35: 121-125 7.Brauner S C , Chen T C , Hutchinson B T , Chang M A , Pasquale L R , Grosskreutz C L , The Course of Glaucoma During Pregnancy A Retrospective Case Series , Arch Ophthalmol. 2006;124:1089-1094 8.Razeghinejad M R , Tak Yee Tania Tai , Fudemberg S J , Katz L J , Pregnancy and Glaucoma ,Survey of Ophthalmology volume 56 number 4 july–august 2011 9.Dumskyj M J , C J Mathias , Dore C J , Bleasdale-Barr K , Kohner E M , Postural variation in Intraocular pressure in primary chronic autonomic failure J Neurol (2002) 249 : 712–718. 10.Grosso A , Scozzari G , Bert F , Mabilia M A , Siliquini R ,Morino M , Intraocular pressure variation during colorectal laparoscopic surgery: standard pneumoperitoneum leads to reversible elevation in intraocular pressure , Surgical Endoscopy 2013 Apr 3
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Public notes
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Contacts
Principal investigator
Name
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Dr eyup aydogan
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Address
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konya training and research hospital , Hacisaban Mahallesi, Yeni Meram Cd. No:97, 42090 Meram/Konya
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Country
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Turkey
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Phone
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+903322210000-2250
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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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inci kara
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Address
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Ardicli Mahallesi, Ismet Pasa Cd., 42250 Selcuklu/Konya
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Country
73571
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Turkey
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Phone
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+903322415000
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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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jale bengi celik
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Address
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Ardicli Mahallesi, Ismet Pasa Cd., 42250 Selcuklu/Konya
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Country
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Turkey
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Phone
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+903322415000
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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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