Feasibility Trial to Maintain Normal Cerebral Oxygen Saturation in High-Risk Cardiac Surgery

NCT01432184 | Completed DMC

• 1 other identifier: ICM 08-1009
• Study Type: interventional
• Target: 200
• Locations: 1 country
• Sites: 1

Brief Summary

Using the brain and the heart as index organs, perioperative interventions to optimize cerebral oxygen saturation and cardiac contractility in high-risk patients undergoing cardiac surgery should have a beneficial systemic effect for enhancing global tissue perfusion and improve outcomes.

Conditions

Cerebral Hypoxia

Keywords

cerebral; hypoxia

Outcome Measures

Primary Outcomes (1)

• Success rate of reversing decreases in cerebral oxygen saturation below 10% of baseline values to values within 10% of baseline in the INTERVENTION group.

  Consensus on the appropriate strategies to prevent and reverse cerebral oxygen desaturations remains controversial. In a recent study by Slater and al.12, randomization into an intervention group failed because anesthesiologists were unable to follow the protocol aimed at strategies to reverse decreases in rSO2. A group from the Montreal Heart Institute has developed a physiologically oriented algorithm to help with the task of reversing decreases in rSO2. The goal of the present study is therefore to confirm that this approach can be used with success by most institutions.

  Up to 12 hours

Secondary Outcomes (4)

• First 30 days post-operative outcomes

  30 days

• ICU data

  Up to 48 hours

• First 24 hours complications

  24 hours

• Post-operative complications

  Up to 7 days

Study Arms (2)

Intervention

ACTIVE COMPARATOR

an alarm threshold at a value of 90% of the resting baseline cerebral saturation value (baseline - 10%) will be established. To minimize the probability of patients reaching significant decreases rSO2 values, interventions to improve cerebral oxygenation will be initiated according to the strategies described in the algorithm. The success and failure of these interventions will be noted. As in the Control group, the screen will remain blinded in the ICU and the intensivist will not see the values.

Procedure: strategies to reverse decrease in rSO2

Control

NO INTERVENTION

the cerebral oxymetry screen will be blinded and changes in NIRS values will be unknown to the anesthesiologist. The management of the case will proceed as per normal local practice. The screen will remain blinded in the ICU and the intensivist will not see the values.

Interventions

strategies to reverse decrease in rSO2 PROCEDURE

an alarm threshold at a value of 90% of the resting baseline cerebral saturation value (baseline - 10%) will be established. To minimize the probability of patients reaching significant decreases rSO2 values, interventions to improve cerebral oxygenation will be initiated according to the strategies described in the algorithm. The success and failure of these interventions will be noted. As in the Control group, the screen will remain blinded in the ICU and the intensivist will not see the values.

Also known as: Cerebral Oxymetry decrease

Intervention

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Patients with EUROSCORES ≥ 10.
• Planned complex surgery including more than one procedure, or redo procedures.
• Patient able to read and understand the consent form.
• Patients ≥ 18 years of age.

You may not qualify if:

• High risk patients undergoing of off pump coronary artery bypass.
• Emergency surgeries less than 6 hours from diagnosis.
• Patient unable to read and understand the consent form.
• Patients with and IABP or a ventricular assist device
• Planned circulatory arrest
• Planned surgery of the descending aorta.
• Patients with acute endocarditis.

Sponsors & Collaborators

• Montreal Heart Institute: lead
• Université de Montréal: collaborator

Study Sites (1)

Montreal Heart Institute

Montreal, Quebec, H1T 1C8, Canada

Location

Related Publications (17)

• Taillefer MC, Denault AY. Cerebral near-infrared spectroscopy in adult heart surgery: systematic review of its clinical efficacy. Can J Anaesth. 2005 Jan;52(1):79-87. doi: 10.1007/BF03018586.

  PMID: 15625262 BACKGROUND

• Kurth CD, Steven JL, Montenegro LM, Watzman HM, Gaynor JW, Spray TL, Nicolson SC. Cerebral oxygen saturation before congenital heart surgery. Ann Thorac Surg. 2001 Jul;72(1):187-92. doi: 10.1016/s0003-4975(01)02632-7.

  PMID: 11465176 BACKGROUND

• Hadolt I, Litscher G. Noninvasive assessment of cerebral oxygenation during high altitude trekking in the Nepal Himalayas (2850-5600 m). Neurol Res. 2003 Mar;25(2):183-8. doi: 10.1179/016164103101201175.

  PMID: 12635520 BACKGROUND

• Casati A, Fanelli G, Pietropaoli P, Proietti R, Tufano R, Danelli G, Fierro G, De Cosmo G, Servillo G; Collaborative Italian Study Group on Anesthesia in Elderly Patients. Continuous monitoring of cerebral oxygen saturation in elderly patients undergoing major abdominal surgery minimizes brain exposure to potential hypoxia. Anesth Analg. 2005 Sep;101(3):740-747. doi: 10.1213/01.ane.0000166974.96219.cd.

  PMID: 16115985 BACKGROUND

• 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.

  PMID: 17179242 BACKGROUND

• Denault A, Deschamps A, Murkin JM. A proposed algorithm for the intraoperative use of cerebral near-infrared spectroscopy. Semin Cardiothorac Vasc Anesth. 2007 Dec;11(4):274-81. doi: 10.1177/1089253207311685.

  PMID: 18270192 BACKGROUND

• Jobsis FF. Non-invasive, infra-red monitoring of cerebral O2 sufficiency, bloodvolume, HbO2-Hb shifts and bloodflow. Acta Neurol Scand Suppl. 1977;64:452-3. No abstract available.

  PMID: 268870 BACKGROUND

• Edmonds HL Jr, Ganzel BL, Austin EH 3rd. Cerebral oximetry for cardiac and vascular surgery. Semin Cardiothorac Vasc Anesth. 2004 Jun;8(2):147-66. doi: 10.1177/108925320400800208.

  PMID: 15248000 BACKGROUND

• Sokol DK, Markand ON, Daly EC, Luerssen TG, Malkoff MD. Near infrared spectroscopy (NIRS) distinguishes seizure types. Seizure. 2000 Jul;9(5):323-7. doi: 10.1053/seiz.2000.0406.

  PMID: 10933986 BACKGROUND

• Shojima M, Watanabe E, Mayanagi Y. Cerebral blood oxygenation after cerebrospinal fluid removal in hydrocephalus measured by near infrared spectroscopy. Surg Neurol. 2004 Oct;62(4):312-8; discussion 318. doi: 10.1016/j.surneu.2003.09.035.

  PMID: 15451273 BACKGROUND

• Gracias VH, Guillamondegui OD, Stiefel MF, Wilensky EM, Bloom S, Gupta R, Pryor JP, Reilly PM, Leroux PD, Schwab CW. Cerebral cortical oxygenation: a pilot study. J Trauma. 2004 Mar;56(3):469-72; discussion 472-4. doi: 10.1097/01.ta.0000114274.95423.c0.

  PMID: 15128115 BACKGROUND

• Vernieri F, Tibuzzi F, Pasqualetti P, Rosato N, Passarelli F, Rossini PM, Silvestrini M. Transcranial Doppler and near-infrared spectroscopy can evaluate the hemodynamic effect of carotid artery occlusion. Stroke. 2004 Jan;35(1):64-70. doi: 10.1161/01.STR.0000106486.26626.E2. Epub 2003 Dec 18.

  PMID: 14684777 BACKGROUND

• 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.

  PMID: 15578464 BACKGROUND

• Slater JP, Guarino T, Stack J, Vinod K, Bustami RT, Brown JM 3rd, Rodriguez AL, Magovern CJ, Zaubler T, Freundlich K, Parr GV. Cerebral oxygen desaturation predicts cognitive decline and longer hospital stay after cardiac surgery. Ann Thorac Surg. 2009 Jan;87(1):36-44; discussion 44-5. doi: 10.1016/j.athoracsur.2008.08.070.

  PMID: 19101265 BACKGROUND

• de Tournay-Jette E, Dupuis G, Bherer L, Deschamps A, Cartier R, Denault A. The relationship between cerebral oxygen saturation changes and postoperative cognitive dysfunction in elderly patients after coronary artery bypass graft surgery. J Cardiothorac Vasc Anesth. 2011 Feb;25(1):95-104. doi: 10.1053/j.jvca.2010.03.019. Epub 2010 Jul 22.

  PMID: 20650659 BACKGROUND

• Deschamps A, Rochon A, Lebon J-S, Ayoub C, Qizilbash B, Couture P, Cogan J, Toledano K, Bélisle S, Hemmings G, Taillefer J, Blain R, Denault A: Decreases in Cerebal Oxygen Saturation: an algorithmic approach. Canadian Anaesthetists' Society Journal 2009; Abstract: #613224

  BACKGROUND

• Fergusson DA, Hebert PC, Mazer CD, Fremes S, MacAdams C, Murkin JM, Teoh K, Duke PC, Arellano R, Blajchman MA, Bussieres JS, Cote D, Karski J, Martineau R, Robblee JA, Rodger M, Wells G, Clinch J, Pretorius R; BART Investigators. A comparison of aprotinin and lysine analogues in high-risk cardiac surgery. N Engl J Med. 2008 May 29;358(22):2319-31. doi: 10.1056/NEJMoa0802395. Epub 2008 May 14.

  PMID: 18480196 BACKGROUND

MeSH Terms

Conditions

Hypoxia, Brain; Hypoxia

Condition Hierarchy (Ancestors)

Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Signs and Symptoms, Respiratory; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Study Officials

• Alain Deschamps, MD, FRCPC

  Montreal Heart Institute

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: PhD, MD, FRCPC,

Study Record Dates

• First Submitted: August 26, 2011
• First Posted: September 12, 2011
• Study Start: July 1, 2010
• Primary Completion: July 1, 2011
• Study Completion: October 1, 2013
• Last Updated: October 20, 2015

Record last verified: 2015-10

Locations

CA (1)