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Improving Neurologic Outcomes in People With Diabetes Who Are Undergoing Heart Surgery

11 juli 2016 bijgewerkt door: National Heart, Lung, and Blood Institute (NHLBI)

Improving Neurologic Outcomes in Diabetics Undergoing Cardiac Surgery

Preliminary studies have shown that people with diabetes who undergo heart surgery may have a higher risk of developing cognitive functioning problems, including memory problems, than people without diabetes who undergo heart surgery. Among people with diabetes, however, those who control their blood sugar levels in a more intensive way during and after heart surgery may have better neurological outcomes than those who use a standard method of controlling their blood sugar levels. This study will compare the effectiveness of using a traditional method of blood sugar control versus a more intensive method of blood sugar control during and after heart surgery for improving neurological outcomes in people with diabetes.

Studie Overzicht

Toestand

Voltooid

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

People with diabetes who undergo heart surgery have a greater risk of experiencing a stroke and developing cognitive functioning problems than people without diabetes who undergo heart surgery. There may be a connection between disturbances in glucose metabolism, endothelial dysfunction, and poor neurological outcomes after heart surgery. People with diabetes who receive more intensive blood glucose management during and after heart surgery may have better neurological outcomes than people who control their blood glucose levels in a standard way. The purpose of this study is to evaluate the effectiveness of using a traditional method of controlling blood glucose levels versus a tailored, more intensive method of glucose control on neurological outcomes in people with diabetes who are undergoing heart surgery. Researchers will also examine genetic factors that may be associated with insulin resistance and inflammation.

This study will enroll people undergoing heart surgery. On the day before surgery, participants will undergo a blood collection and neuropsychological testing. They will then be randomly assigned to either a traditional method of blood glucose control or an intensive, tailored method of blood glucose control. Participants following the traditional method of blood glucose control may receive insulin several times a day, based on the results of glucose monitoring. Participants following the intensive, tailored method of blood glucose control will undergo hourly measurements of their glucose levels and receive insulin adjustments as needed to maintain a glucose level of 100-140 mg/dL. During surgery, all participants will undergo an ultrasound of their neck to monitor blood vessel activity. Additional blood samples will be collected during surgery, 6 hours after surgery, 24 hours after surgery, and upon hospital discharge or 5 days after surgery.

One week after surgery or just before leaving the hospital, participants will undergo a magnetic resonance imaging (MRI) procedure and neuropsychological testing. Before leaving the hospital, participants will take part in a diabetes education session and nutrition counseling. Three to 6 weeks and 6 months after surgery, participants will undergo repeat neuropsychological testing. Once a month for 6 months, participants who received the intensive, tailored method of blood glucose control will attend study visits at which time study researchers will monitor their diabetes.

Studietype

Ingrijpend

Inschrijving (Werkelijk)

133

Fase

  • Fase 3

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

  • Verenigde Staten
    • North Carolina
      • Winston-Salem, North Carolina, Verenigde Staten, 27057
        • Wake Forest Baptist Medical Center

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

35 jaar en ouder (Volwassen, Oudere volwassene)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Beschrijving

Inclusion Criteria:

  • History of diabetes, elevated fasting blood glucose, elevated hemoglobin A1c, or elevation of these variables during the current hospital admission
  • Scheduled to undergo coronary artery bypass graft (CABG) surgery
  • Scheduled to undergo aortic valve replacement (AVR), mitral valve replacement (MVR), or both
  • Scheduled to undergo valve replacement with CABG

Exclusion Criteria:

  • Undergoing emergent (i.e., urgent) procedures
  • Alzheimer's disease or similar dementias
  • Severe claustrophobia
  • Kidney insufficiency, as defined by serum creatine levels greater than 2.0 mg/dL
  • Cannot be expected to complete neuropsychological testing
  • Recent extensive, life threatening acute myocardial infarction (AMI)

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Behandeling
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Intensive Glucose Management
Participants will receive intensive glucose management.
Gedragsmatig: Intensive Glucose Management
Participants in the intensive glucose management group will undergo strict management of their blood glucose levels with a target whole blood glucose level of 100-140 mg/dL preoperatively, intraoperatively, and postoperatively in the intensive care unit (ICU). Once meals are started, targets for glycemia management will be (a) fasting: 80-140 mg/dL, (b) postprandial: 140-180 mg/dL. Prior to hospital discharge, participants will receive an in-depth diabetes education session. After hospital discharge, participants will attend monthly study visits for 6 months so that study researchers can monitor their glycemia management.
Actieve vergelijker: Traditional Glucose Management
Participants will receive a traditional method of glucose management.
Gedragsmatig: Traditional Glucose Management:
Participants will receive traditional management of blood glucose levels while in the hospital. They may receive insulin several times a day, based on the results of glucose monitoring.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Tijdsspanne
Proportion of participants with identifiable brain lesions detected by magnetic resonance imaging (MRI)
Tijdsspanne: Measured 1 week after surgery
Measured 1 week after surgery
Proportion of participants with new neuropsychological deficits (20% decline on two or more neuropsychological tests)
Tijdsspanne: Measured 6 months after surgery
Measured 6 months after surgery

Secundaire uitkomstmaten

Uitkomstmaat
Tijdsspanne
Number of lesions, as measured by MRI
Tijdsspanne: Measured 1 week after surgery
Measured 1 week after surgery
Size of lesions, as measured by MRI
Tijdsspanne: Measured 1 week after surgery
Measured 1 week after surgery
Genetic analysis (i.e., predictive utility of haplotype assignment on primary outcomes)
Tijdsspanne: Measured 6 months after surgery
Measured 6 months after surgery
Neuropsychological deficits (i.e., predictive utility of neuropsychological performance on presence, number, and volume of lesions)
Tijdsspanne: Measured 6 months after surgery
Measured 6 months after surgery

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

National Heart, Lung, and Blood Institute (NHLBI)

Onderzoekers

  • Hoofdonderzoeker: Edward H. Kincaid, MD, Wake Forest University Health Sciences
  • Studie directeur: Jorge Calles-Escandon, MD, Wake Forest University Health Sciences
  • Studie directeur: Donald W. Bowden, PhD, Wake Forest University Health Sciences
  • Studie directeur: David A. Stump, PhD, Wake Forest University Health Sciences

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start

1 december 2008

Primaire voltooiing (Werkelijk)

1 mei 2014

Studie voltooiing (Werkelijk)

1 mei 2014

Studieregistratiedata

Eerst ingediend

2 februari 2009

Eerst ingediend dat voldeed aan de QC-criteria

2 februari 2009

Eerst geplaatst (Schatting)

4 februari 2009

Updates van studierecords

Laatste update geplaatst (Schatting)

12 juli 2016

Laatste update ingediend die voldeed aan QC-criteria

11 juli 2016

Laatst geverifieerd

1 juli 2009

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • 615
  • R01HL089115-01 (Subsidie/contract van de Amerikaanse NIH)

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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