Effects of Nitrous Oxide on Intraocular Pressure
Public ClinicalTrials.gov record NCT00696189. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
The Effects of Nitrous Oxide on Intraocular Pressure and Ocular Perfusion
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The concept of ocular perfusion pressure (OPP), is defined as the difference between the mean arterial pressure (MAP) and the intraocular pressure (IOP.)It has been hypothesized that unopposed decreases in MAP, increases in IOP or a combination of the two may result in hypo perfusion of the eye and can cause an ocular infarction at the level of the retina or optic nerve, leading to varying degrees of visual loss which is frequently bilateral and irreversible. Both the prone position and downward head tilting (Trendelenburg position) have been associated with increases in IOP compared to the supine horizontal position (2,4,5,6), but it is not known whether the Trendelenburg position during surgery and anesthesia is associated with POVL.
Study identification
- NCT ID
- NCT00696189
- Recruitment status
- Terminated
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 30 participants
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 18 Years to 65 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Aug 31, 2006
- Primary completion
- Aug 31, 2010
- Completion
- Aug 31, 2011
- Last update posted
- Apr 23, 2015
2006 – 2011
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| UMDNJ | Newark | New Jersey | 07101 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00696189, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Apr 23, 2015 · Synced Sep 7, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00696189 live on ClinicalTrials.gov.