Association of the Optic Nerve Sheath Diameter With Eyeball Transverse Diameter in Robot-assisted Prostatectomy
NCT ID: NCT03691025
Last Updated: 2018-10-02
Study Results
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Basic Information
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UNKNOWN
60 participants
OBSERVATIONAL
2018-10-15
2019-03-01
Brief Summary
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Despite these advantages, pneumoperitoneum and steep trendelenburg position are associated with hemodynamic instability and elevated intracranial pressures (ICP).
Ultrasonographic measurement of optic nerve sheath diameter (ONSD) is an indirect but also a generally accepted reliable and noninvasive measurement of elevated ICP. However, optimal cut-off values are highly inconsistent due to multiple factors (gender, height, weight). To eliminate the effects of these factors on the results; a ratio should be established in patients known to have elevated ICPs.
In a recent study ONSD/ eyeball transverse diameter(ETD) in healthy volunteers in a specific population was established.
60 patients without any history of ICP undergoing RALRP will be enrolled to the study. Ultrasonographic measurement of ONSD and ETD will be performed 10 minutes after induction of general anesthesia, 10 minutes after CO2 pneumoperitoneum with trendelenburg positioning and measurements will be repeated hourly and at last after returning to supine position without CO2 pneumoperitoneum at the end of the procedure.
Hemodynamic variables and BIS values on this specific times will be recorded and an arterial sample will be obtained.
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Detailed Description
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Conditions
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Study Design
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COHORT
PROSPECTIVE
Study Groups
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RALPD
No interventions assigned to this group
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
* intraocular surgery
* history of elevated ICPs
18 Years
75 Years
MALE
No
Sponsors
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Hacettepe University
OTHER
Responsible Party
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Başak Akça
Assist.Prof
Principal Investigators
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Başak Akça
Role: PRINCIPAL_INVESTIGATOR
Hacettepe University Department of Anesthesiology and Reanimation
Central Contacts
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References
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Kim DH, Jun JS, Kim R. Ultrasonographic measurement of the optic nerve sheath diameter and its association with eyeball transverse diameter in 585 healthy volunteers. Sci Rep. 2017 Nov 21;7(1):15906. doi: 10.1038/s41598-017-16173-z.
Other Identifiers
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hacetteperobotprostat
Identifier Type: -
Identifier Source: org_study_id
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