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Cardiovascular DiseasesPhase 2/3NCT00151307

Effects of Cerebral Oxygen Saturation on Neuropsychological Outcomes

A Phase 2/3 study testing INVOS cerebral oximeter in people with Cardiovascular Diseases and Postoperative Complications, run by Weill Medical College of Cornell University at 1 site in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

The purpose of this study is to evaluate the effects of maintaining adequate cerebral oxygen saturation (over 40%) on patients undergoing cardiac surgery. Effects on neuropsychological outcome, length of ICU stay, and length of hospital stay will be measured. Read more about this study

Who is it for?
Ages 18 to 80 years
What is being tested?
INVOS cerebral oximeter
Type of treatment
Medical device
How many people
200 participants
Where
1 siteUnited States
Study dates
Feb 2001to Apr 2007
Phase
Phase 2/3
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 80 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Adult patient
  • Elective cardiac surgery with cardiopulmonary bypass
  • Coronary artery disease or valvular heart disease or combination of both
  • Ability and willingness to give informed consent

Who cannot join

  • Pediatric patients
  • Emergency surgery
  • Unable to understand English
  • Allergic to tape used to attach oxygen sensor

Trial locations and contacts

1 site in 1 country.

United States1 site
  • New York Presbyterian Hospital, Weill Medical College of Cornell University

    New York, New York, 10021

Other trials in United States

About this study

Official title: The Effects of Monitoring and Maintaining Cerebral Oxygen Saturation on Neuropsychological Outcomes in Patients Undergoing Cardiac Surgery

The purpose of this study is to evaluate the effects of maintaining adequate cerebral oxygen saturation (over 40%) on patients undergoing cardiac surgery. Effects on neuropsychological outcome, length of ICU stay, and length of hospital stay will be measured.

Read the detailed description

Central nervous system dysfunction is a major cause of morbidity after cardiac surgery. This study seeks to evaluate the effects of cerebral oxygen saturation on the neuropsychological outcome of cardiac surgery patients. Currently, monitoring of cerebral oxygen saturation levels is not part of routine and standard practice.

Subjects will be assigned to a control and intervention group. Anesthesia and surgery will be performed as per usual standards of care. Patients in both groups will be monitored with an oxygen sensor placed over the forehead. The data will be recorded continuously on a floppy disk. The control group will be treated according to current standard of care; the readings of brain oxygen saturation will not be visible to the clinician. In the intervention group, the reading of brain oxygen saturation will be monitored by the anesthesiologist throughout surgery. Interventions will be performed to maintain cerebral oxygen saturations above 40%. Neuropsychological tests will be completed pre-operatively and at two time points post-operatively. The tests used are the ASEM (antisaccadic eye movement) and the MMSE (mini-mental state examination).

Being tested
INVOS cerebral oximeter
Keywords
Heart surgery, Cerebral oxygen saturation, Neuropsychological function
Medical subject headings
Cardiovascular Diseases, Postoperative Complications

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • INVOS cerebral oximeterDevice

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Neuropsychological Outcome

  2. Tests:

  3. Anti-saccadic eye movement

  4. Mini-mental state examination

  5. Neurological testing

  6. Completed pre-operatively, 3-4 days post-op, 2-3 months post-op

Secondary outcomes (3)
  1. ICU & Hospital length of stay

  2. Morbidity (complications post-op)

  3. Mortality

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted8 Sep 2005 (estimated)
  2. Study startFeb 2001
  3. Study completionApr 2007

Why it stopped: Could not recruit any more people.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2/3
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Single blind
Enrolment
200 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00151307
Sponsor's protocol ID
0599-691
Status last verified
Jun 2008
First submitted
6 Sep 2005
Last updated
6 Jun 2008
Results posted
No

Publications

  • Yao FS, Tseng CC, Ho CY, Levin SK, Illner P. Cerebral oxygen desaturation is associated with early postoperative neuropsychological dysfunction in patients undergoing cardiac surgery. J Cardiothorac Vasc Anesth. 2004 Oct;18(5):552-8. doi: 10.1053/j.jvca.2004.07.007.

    PubMed 15578464

Questions about this trial

What is this clinical trial studying?

A Phase 2/3 study testing INVOS cerebral oximeter in people with Cardiovascular Diseases and Postoperative Complications, run by Weill Medical College of Cornell University at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 6 Jun 2008. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this combined phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study was stopped early (reason given: Could not recruit any more people.). Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Neuropsychological Outcome. The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00151307, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Jun 2008.

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