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Post-Operative DeliriumPhase 3NCT00991328

Role of Absolute Cerebral Oximetry to Prevent Neurocognitive Injury in Elderly Patients Undergoing Cardiac Surgery

A Phase 3 study testing SctO2 < 60 %. in people with Post-Operative Delirium and Postoperative Cognitive Dysfunction, run by Icahn School of Medicine at Mount Sinai 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 determine whether brain oxygenation measured by cerebral oximeter has an impact on neurocognitive dysfunction. Read more about this study

Who is it for?
Ages 65 years and olderHealthy volunteers can take part
What is being tested?
SctO2 < 60 %.
Type of treatment
Surgery or procedure
Could I receive a placebo?
No, everyone receives an active treatment
How many people
15 participants
Where
1 siteUnited States
Study dates
Sep 2009to Dec 2010
Phase
Phase 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 65 years and older
  • All sexes
  • Healthy volunteers accepted
  • Older adult

Who may be able to join

  • 65 and older
  • Elective cardiac or thoracic aortic surgery
  • Capable and willing to consent
  • Participants literate in English

Who cannot join

  • Emergency Surgery
  • Major Neurological Disease
  • Gross Cognitive Dysfunction
  • Patients not expected to be able to complete the 1 week and 3 months post-operative visit.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Mount Sinai School of Medicine

    New York, New York, 10029

Other trials in United States

About this study

Official title: Tailored Patient Management Guided With Absolute Cerebral Oximetry to Prevent Neurocognitive Injury in Elderly Patients Undergoing Cardiac Surgery.

The purpose of this study is to determine whether brain oxygenation measured by cerebral oximeter has an impact on neurocognitive dysfunction.

Read the detailed description

Both postoperative delirium (PD) and postoperative cognitive dysfunction (POCD) are well known complications seen in elderly patients after cardiac surgery. The etiologies of PD and POCD are unknown, but cerebral ischemia remains a prime candidate. Attempts to correlate reduced levels of systemic oxygenation (i.e. SpO2) with the development of PD/POCD have been to date disappointing.

We believe that cerebral oximetry, a noninvasive technology that continuously monitors cerebral tissue oxygen saturation (SctO2), will enable us to answer the question of whether or not a correlation exists.

The availability of an absolute cerebral oximeter (FORE-SIGHT), with its ability to establish and manipulate threshold values for SctO2, provides us the opportunity to assess the relationship between cerebral oxygenation and the development of neurocognitive complications.

We propose a randomized, masked trial of 120 patients, adequately powered to assess the following:

  • Is there an association between deficits in cerebral oxygenation and the occurrence of PD at some time in the 1st 5 days after the operation?
  • Is there an association between deficits in cerebral oxygenation and changes in POCD scores shortly (5 days) after the operation and/or 4-6 weeks later? We hypothesize that individually tailored patient management guided with intraoperative and postoperative absolute cerebral oximetry monitoring using a tailored protocol designed to maintain SctO2 values above a specific threshold will result in improved neurocognitive outcomes in geriatric patients undergoing cardiac surgery.
Being tested
SctO2 < 60 %.
Keywords
PD, POCD, Post-op Delirium (PD), Post-op Cognitive Dysfunction (POCD)
Medical subject headings
Emergence Delirium, Postoperative Cognitive Complications

What participants receive

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

  • SctO2 < 60 %.Procedure or surgery

    The following intervention protocol will be applied when SctO2 level falls below 60 %. First, the patients head position will be checked for suitable position and the face will be observed for plethora. Then the efforts will be made to maintain PaCO2 between 40-50 mmHg and MAP of 60 - 80 mm Hg. Cardiac index will be maintained between 2.0 - 2.5 L/min/m2. The hematocrit should be more than 20 %. The red blood cells or hemoconcentration will be used for this purpose.

Study groups in NCT00991328
Study groupRoleWhat they receive
Cerebral Desaturation, i.e; SctO2 < 60 % for 5 minutesActive comparatorOnce the cerebral desaturation is established, the study personnel will attempt to optimize the level of oxygen within the brain of the study patients.
Receives: Procedure: SctO2 < 60 %.
Patients with SctO2 less than 60 %.No interventionThe study patients will not get any intervention in this arm if the Sct02 falls below 60%

What is being measured

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

  1. The association of Postoperative Delirium (PD) and Postoperative Cognitive Dysfunction (POCD) with changes in cerebral tissue oxygen saturation (SctO2).

    Measured: First 5 days after the cardiac surgery.

Secondary outcomes (1)
  1. Postoperative Morbidity and Mortality

    Measured: 3 months postoperatively

Timeline

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

  1. First posted8 Oct 2009 (estimated)
  2. Study startSep 2009
  3. Primary completionDec 2010
  4. Study completionDec 2010

Why it stopped: low enrollment

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 3
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Care provider, Investigator
Enrolment
15 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00991328
Sponsor's protocol ID
GCO # 07-0332
Status last verified
Sep 2016
First submitted
2 Oct 2009
Last updated
16 Sep 2016
Results posted
No
Data monitoring committee
Yes

Publications

  • Roach GW, Kanchuger M, Mangano CM, Newman M, Nussmeier N, Wolman R, Aggarwal A, Marschall K, Graham SH, Ley C. Adverse cerebral outcomes after coronary bypass surgery. Multicenter Study of Perioperative Ischemia Research Group and the Ischemia Research and Education Foundation Investigators. N Engl J Med. 1996 Dec 19;335(25):1857-63. doi: 10.1056/NEJM199612193352501.

    PubMed 8948560
  • Newman MF, Kirchner JL, Phillips-Bute B, Gaver V, Grocott H, Jones RH, Mark DB, Reves JG, Blumenthal JA; Neurological Outcome Research Group and the Cardiothoracic Anesthesiology Research Endeavors Investigators. Longitudinal assessment of neurocognitive function after coronary-artery bypass surgery. N Engl J Med. 2001 Feb 8;344(6):395-402. doi: 10.1056/NEJM200102083440601.

    PubMed 11172175
  • Warner CD, Weintraub WS, Craver JM, Jones EL, Gott JP, Guyton RA. Effect of cardiac surgery patient characteristics on patient outcomes from 1981 through 1995. Circulation. 1997 Sep 2;96(5):1575-9. doi: 10.1161/01.cir.96.5.1575.

    PubMed 9315549
  • Inouye SK. Delirium in older persons. N Engl J Med. 2006 Mar 16;354(11):1157-65. doi: 10.1056/NEJMra052321. No abstract available.

    PubMed 16540616
  • Newman MF, Grocott HP, Mathew JP, White WD, Landolfo K, Reves JG, Laskowitz DT, Mark DB, Blumenthal JA; Neurologic Outcome Research Group and the Cardiothoracic Anesthesia Research Endeavors (CARE) Investigators of the Duke Heart Center. Report of the substudy assessing the impact of neurocognitive function on quality of life 5 years after cardiac surgery. Stroke. 2001 Dec 1;32(12):2874-81. doi: 10.1161/hs1201.099803.

    PubMed 11739990
  • Ergin MA, Galla JD, Lansman sL, Quintana C, Bodian C, Griepp RB. Hypothermic circulatory arrest in operations on the thoracic aorta. Determinants of operative mortality and neurologic outcome. J Thorac Cardiovasc Surg. 1994 Mar;107(3):788-97; discussion 797-9.

    PubMed 8127108
  • Plestis KA, Gold JP. Importance of blood pressure regulation in maintaining adequate tissue perfusion during cardiopulmonary bypass. Semin Thorac Cardiovasc Surg. 2001 Apr;13(2):170-5. doi: 10.1053/stcs.2001.24071.

    PubMed 11494208
  • Hagl C, Khaladj N, Karck M, Kallenbach K, Leyh R, Winterhalter M, Haverich A. Hypothermic circulatory arrest during ascending and aortic arch surgery: the theoretical impact of different cerebral perfusion techniques and other methods of cerebral protection. Eur J Cardiothorac Surg. 2003 Sep;24(3):371-8. doi: 10.1016/s1010-7940(03)00337-3.

    PubMed 12965307
  • Rasmussen LS, O'Brien JT, Silverstein JH, Johnson TW, Siersma VD, Canet J, Jolles J, Hanning CD, Kuipers HM, Abildstrom H, Papaioannou A, Raeder J, Yli-Hankala A, Sneyd JR, Munoz L, Moller JT; ISPOCD2 Investigators. Is peri-operative cortisol secretion related to post-operative cognitive dysfunction? Acta Anaesthesiol Scand. 2005 Oct;49(9):1225-31. doi: 10.1111/j.1399-6576.2005.00791.x.

    PubMed 16146456
  • Goldman S, Sutter F, Ferdinand F, Trace C. Optimizing intraoperative cerebral oxygen delivery using noninvasive cerebral oximetry decreases the incidence of stroke for cardiac surgical patients. Heart Surg Forum. 2004;7(5):E376-81. doi: 10.1532/HSF98.20041062.

    PubMed 15799908
  • Murkin JM, Adams SJ, Novick RJ, Quantz M, Bainbridge D, Iglesias I, Cleland A, Schaefer B, Irwin B, Fox S. Monitoring brain oxygen saturation during coronary bypass surgery: a randomized, prospective study. Anesth Analg. 2007 Jan;104(1):51-8. doi: 10.1213/01.ane.0000246814.29362.f4.

    PubMed 17179242
  • Moller JT, Cluitmans P, Rasmussen LS, Houx P, Rasmussen H, Canet J, Rabbitt P, Jolles J, Larsen K, Hanning CD, Langeron O, Johnson T, Lauven PM, Kristensen PA, Biedler A, van Beem H, Fraidakis O, Silverstein JH, Beneken JE, Gravenstein JS. Long-term postoperative cognitive dysfunction in the elderly ISPOCD1 study. ISPOCD investigators. International Study of Post-Operative Cognitive Dysfunction. Lancet. 1998 Mar 21;351(9106):857-61. doi: 10.1016/s0140-6736(97)07382-0.

    PubMed 9525362
  • Murkin JM. Hemodynamic changes during cardiac manipulation in off-CPB surgery: relevance in brain perfusion. Heart Surg Forum. 2002;5(3):221-4.

    PubMed 12538133
  • Ferrari M, Mottola L, Quaresima V. Principles, techniques, and limitations of near infrared spectroscopy. Can J Appl Physiol. 2004 Aug;29(4):463-87. doi: 10.1139/h04-031.

    PubMed 15328595
  • Madsen PL, Secher NH. Near-infrared oximetry of the brain. Prog Neurobiol. 1999 Aug;58(6):541-60. doi: 10.1016/s0301-0082(98)00093-8.

    PubMed 10408656

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing SctO2 < 60 %. in people with Post-Operative Delirium and Postoperative Cognitive Dysfunction, run by Icahn School of Medicine at Mount Sinai 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 16 Sep 2016. 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 phase mean?

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: low enrollment). 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?

The association of Postoperative Delirium (PD) and Postoperative Cognitive Dysfunction (POCD) with changes in cerebral tissue oxygen saturation (SctO2). (time frame: First 5 days after the cardiac surgery.). 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 NCT00991328, which also lists 26 linked publications.

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 16 Sep 2016.

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Clinical Trial NCT00991328 | AzTrials