ONSD According to the Position During Laparoscopy
ONSD
Comparison of Optic Nerve Sheath Diameter According to Position During Laparoscopy
1 other identifier
interventional
60
1 country
1
Brief Summary
Increase of intracerebral pressure (ICP) during laparoscopic surgery has known to be associated with positional changes. Optic nerve sheath diameter (ONSD) has correlation with ICP and ultrasonographic measurement of optic nerve sheath diameter (ONSD) is known to be a noninvasive and rapidly applicable technique for evaluating ICP. The aim of this study is to investigate the change of ONSD according to the positional change during laparoscopic surgery.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for not_applicable
Started Sep 2013
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
September 1, 2013
CompletedFirst Submitted
Initial submission to the registry
September 4, 2013
CompletedFirst Posted
Study publicly available on registry
September 9, 2013
CompletedPrimary Completion
Last participant's last visit for primary outcome
September 1, 2014
CompletedStudy Completion
Last participant's last visit for all outcomes
September 1, 2014
CompletedOctober 30, 2014
October 1, 2014
1 year
September 4, 2013
October 28, 2014
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
ONSD and PaCO2
ONSD and PaCO2 - 5 minutes after introducing positional change
5 minutes after introducing positional change
Secondary Outcomes (1)
ONSD and PaCO2
5 minutes after introducing pneumoperitoneum
Other Outcomes (5)
Preinduction ONSD
prior to the induction of anesthesia, an expected average of 5 minutes
ONSD and PaCO2
5 minutes after induction of anesthesia
ONSD and PaCO2
15 minutes after positional change
- +2 more other outcomes
Study Arms (2)
Group 1
EXPERIMENTALDrug: Desflurane Anesthesia with desflurane in both Group 1 and Group 2 - adjust minimum alveolar concentration (MAC) to maintain bispectral index (BIS) between 40-60 Drug: Remifentanil Adjuvant continuous administration \- adjust effect site concentration to maintain changes of vital sign below 20% Device: Ultrasonographic measurement of ONSD Procedure/Surgery: Mechanical ventilation Maintain the end-tidal carbon dioxide partial pressure between 35 and 40 mmHg and peak inspiratory pressure below 30 cmH2O. Trendelenburg position - 30 degree
Group 2
EXPERIMENTALDrug: Desflurane Anesthesia with desflurane in both Group 1 and Group 2 - adjust MAC to maintain BIS between 40-60 Drug: Remifentanil Adjuvant continuous administration \- adjust effect site concentration to maintain changes of vital sign below 20% Device: Ultrasonographic measurement of ONSD Procedure/Surgery: Mechanical ventilation Maintain the end-tidal carbon dioxide partial pressure between 35 and 40 mmHg and peak inspiratory pressure below 30 cmH2O. Reverse Trendelenburg position - 30 degree
Interventions
Anesthesia with desflurane in both Group 1 and Group 2 \- adjust MAC to maintain BIS between 40-60
Adjuvant continuous administration \- adjust effect site concentration to maintain changes of vital sign below 20%
Patients were placed in the supine position with their eyes closed, and a thick gel layer was applied to the closed upper eyelid. The 7.5-MHz linear probe was placed on the gel without excessive pressure and adjusted to the proper angle for displaying the entry of the optic nerve into the globe. The intensity of the ultrasound was adjusted to display optimal contrast between the retrobulbar echogenic fat tissue and the vertical hypoechoic band. An ultrasound beam was focused on the retrobulbar area (4 cm deep) using the lowest possible acoustic power that could measure ONSD. The ONSD was measured 3 mm behind the optic disc. Measurements were performed in the transverse and sagittal planes of both eyes, and the final ONSD value was calculated by averaging 4 measured values.
After tracheal intubation, the lungs of the patients were then ventilated with oxygen in air (1:2) using a tidal volume of 8-10 mL/kg and a respiratory rate of 10-12/min, and the ventilation rate was adjusted to maintain the end-tidal carbon dioxide partial pressure between 35 and 40 mmHg and peak inspiratory pressure below 30 cmH2O.
Reverse Trendelenburg position - 30 degree
Eligibility Criteria
You may qualify if:
- Female patients who are scheduled to undergo laparoscopic surgery, American society of anesthesiologist class (ASA) I-II, aged between 19 to 65 years
You may not qualify if:
- Aged unger 18 years or over 65 years
- American society of anesthesiologist class (ASA) III-IV
- Patients with increased intracranial pressure (e.g. hydrocephalus, intracranial hemorrhage, etc.)
- Patients with opthalmologic disease
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Chosun University Hospital
Gwangju, Donggu, 501-717, South Korea
Related Publications (5)
Gerges FJ, Kanazi GE, Jabbour-Khoury SI. Anesthesia for laparoscopy: a review. J Clin Anesth. 2006 Feb;18(1):67-78. doi: 10.1016/j.jclinane.2005.01.013.
PMID: 16517337RESULTMoretti R, Pizzi B. Ultrasonography of the optic nerve in neurocritically ill patients. Acta Anaesthesiol Scand. 2011 Jul;55(6):644-52. doi: 10.1111/j.1399-6576.2011.02432.x. Epub 2011 Apr 4.
PMID: 21463263RESULTGeeraerts T, Newcombe VF, Coles JP, Abate MG, Perkes IE, Hutchinson PJ, Outtrim JG, Chatfield DA, Menon DK. Use of T2-weighted magnetic resonance imaging of the optic nerve sheath to detect raised intracranial pressure. Crit Care. 2008;12(5):R114. doi: 10.1186/cc7006. Epub 2008 Sep 11.
PMID: 18786243RESULTMoretti R, Pizzi B, Cassini F, Vivaldi N. Reliability of optic nerve ultrasound for the evaluation of patients with spontaneous intracranial hemorrhage. Neurocrit Care. 2009 Dec;11(3):406-10. doi: 10.1007/s12028-009-9250-8.
PMID: 19636971RESULTGeeraerts T, Launey Y, Martin L, Pottecher J, Vigue B, Duranteau J, Benhamou D. Ultrasonography of the optic nerve sheath may be useful for detecting raised intracranial pressure after severe brain injury. Intensive Care Med. 2007 Oct;33(10):1704-11. doi: 10.1007/s00134-007-0797-6. Epub 2007 Aug 1.
PMID: 17668184RESULT
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- STUDY CHAIR
Ki Tae Jung, M.D.
Department of Anesthesiology and Pain medicine School of Medicine, Chosun University
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- NON RANDOMIZED
- Masking
- NONE
- Purpose
- DIAGNOSTIC
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Assist professor
Study Record Dates
First Submitted
September 4, 2013
First Posted
September 9, 2013
Study Start
September 1, 2013
Primary Completion
September 1, 2014
Study Completion
September 1, 2014
Last Updated
October 30, 2014
Record last verified: 2014-10