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Intensive Insulin Therapy in Patients Undergoing Coronary Artery Bypass Surgery (CABG)

18 december 2014 bijgewerkt door: Guillermo Umpierrez, Emory University
High blood glucose levels (hyperglycemia) in cardiac surgery patients with diabetes are associated with increased risk of hospital complications. Blood sugar control with intravenous insulin may prevent such hospital complications. Many patients undergoing cardiac bypass surgery (CABG) develop high blood sugars and require insulin therapy (shortly before or after surgery). It is not clear what the best insulin regimen is or what is the best blood sugar target in these patients. Accordingly, this research study aims to determine optimal blood glucose levels during the in patients undergoing cardiac bypass surgery. Patients will be divided in two groups. The intensive insulin group will be maintained at blood glucose between 100-140 mg/dl and the conventional treatment group at a glucose level between 140-180 mg/dl. The insulins to be used in this trial (lantus, aspart and regular insulin) are approved for use in the treatment of patients with diabetes by the FDA (Food and Drug Administration). A total of 326 patients with high blood glucose after cardiac bypass surgery will be recruited in this study. Patients will be recruited at Emory University Hospital, Emory Midtown Hospital and Grady Memorial Hospital.

Studie Overzicht

Toestand

Voltooid

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

Several prospective cohort studies as well as randomized clinical trials (RCT) in cardiac surgery patients have shown that intensified insulin therapy (target BG: 110-140 mg/dl) results in a reduction in short- and long-term mortality compared with conventionally treated patients. The results of recent international trials in critically ill patients; however, have failed to show a significant improvement in mortality or have even shown increased mortality risk as well as increased number of hypoglycemic events with intensive compared to less intensive glycemic control. Based on the results of these ICU trials, new ADA and AACE guidelines recommended a glycemic target between 140 and 180 mg/dl in the ICU including cardiac surgery patients. There is concern that such high BG targets might increase the risk of hospital complications in cardiac surgical patients in whom intensive glucose control has consistently reduced infections, length of hospital stay, resource utilization, and cardiac-related mortality. The overall objective of this proposal is to conduct the first prospective RCT to determine the optimal BG target during the perioperative period in hyperglycemic subjects who undergo CABG in the United States. Subjects will be randomized to undergo intensive insulin therapy adjusted to maintain a BG between 100 mg/dl and 140 mg/dl or to a conventional glucose control with a target BG between 141 mg/dl and 200 mg/dl in the ICU. The central hypothesis of this proposal is that intensive insulin management will reduce perioperative complications compared to a conventional BG control in cardiac surgery patients.

Studietype

Ingrijpend

Inschrijving (Werkelijk)

338

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
    • Georgia
      • Atlanta, Georgia, Verenigde Staten, 30326
        • Emory University Hospital

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

18 jaar tot 80 jaar (Volwassen, Oudere volwassene)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Beschrijving

Inclusion Criteria:

  1. Males or females between the ages of 18 and 80 years undergoing CABG +/- valve surgery.
  2. Post surgical hyperglycemia (BG > 140 mg/dl).
  3. Patients with and without a history of type 2 diabetes

Exclusion Criteria:

  1. Patients requiring combination CABG with additional procedures such aorta replacement.
  2. Patients with severely impaired renal function (serum creatinine ≥3.0 mg/dl or GFR < 30 ml/min) or clinically significant hepatic failure.
  3. Subjects with acute hyperglycemic crises such as diabetic ketoacidosis (DKA) and hyperosmolar hyperglycemic state.
  4. Moribund patients and those at imminent risk of death (brain death or cardiac standstill).
  5. Patients or next-to-kin with mental condition rendering the subject or family member unable to understand the nature, scope, and possible consequences of the study.
  6. Female subjects who are pregnant or breast-feeding at time of enrollment into the study.

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
Actieve vergelijker: Intensive insulin treatment
Intensive insulin treatment (BG target: 100-140 mg/dL)
Ander: Regular insulin (intensive treatment)
Titration of the IV insulin rate for glucose goal 100-140 mg/dL
Actieve vergelijker: Conventional insulin treatment
Conventional insulin treatment (BG target: 141-180 mg/dl)
Ander: Regular Insulin (conventional treatment)
Titration of the IV insulin rate for glucose goal 141-180 mg/dl

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Number of Subjects That Were Diagnosed for Peri-operative Complications
Tijdsspanne: Within 6 months of hospitalization
Number of participants that presented at least 1 complications including sternal wound infection, bacteremia, acute renal failure, respiratory failure, and major cardiovascular events (MACE) during the current hospitalization and up to 6 months after hospitalization
Within 6 months of hospitalization
Hospital Mortality
Tijdsspanne: average 1 month during the hospitalization
Mortality is defined as death occurring during admission, either during ICU or after transition to non-ICU admission.
average 1 month during the hospitalization

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Glycemic Control
Tijdsspanne: average 1 month during the hospitalization
  1. Hyperglycemic events (BG > 200 mg/dL) in ICU and non-ICU
  2. Hypoglycemic events (BG < 70 mg/dl; severe hypoglycemia (BG < 40 mg/dl).
average 1 month during the hospitalization
Major Cardiovascular Events
Tijdsspanne: average 1 month during the hospitalization
  1. Acute myocardial infarction : (1) typical increase and gradual decrease (troponin) or (2) more rapid increase and decrease (creatine kinase MB) of biochemical markers of myocardial necrosis with at least one of the following: (a) ischemic symptoms, (b) development of pathologic Q waves on the electrocardiogram, (c) electrocardiographic changes indicative of ischemia (ST-segment elevation or depression), or (d) coronary artery intervention (e.g., coronary angioplasty).
  2. Congestive heart failure
  3. Cardiac arrhythmias: malignant arrhythmia
average 1 month during the hospitalization
Acute Renal Failure
Tijdsspanne: average 1 month during the hospitalization
new-onset abnormal renal function: serum creatinine > 2.0 mg/dL or an increment level > 50% from baseline
average 1 month during the hospitalization
Respiratory Failure, Defined as PaO2 Value < 60 mm Hg While Breathing Air or a PaCO2 > 50 mm Hg.
Tijdsspanne: average 1 month during the hospitalization
Respiratory failure, defined as PaO2 value < 60 mm Hg while breathing air or a PaCO2 > 50 mm Hg.
average 1 month during the hospitalization
ICU and Hospital Length of Stay, and ICU Readmissions
Tijdsspanne: average 1 month during the hospitalization
ICU and hospital length of stay, and ICU readmissions
average 1 month during the hospitalization
Surgical Wound Infection
Tijdsspanne: average 1 month during the hospitalization
superficial and deep sternal wound infection
average 1 month during the hospitalization
Pneumonia (CDC Criteria)
Tijdsspanne: average 1 month during the hospitalization
Pneumonia (CDC criteria)
average 1 month during the hospitalization
Cerebrovascular Events
Tijdsspanne: average 1 month during the hospitalization
permanent stroke and reversible ischemic neurologic deficit.
average 1 month during the hospitalization
Duration of Ventilatory Support and ICU Readmission
Tijdsspanne: average 1 month during the hospitalization
Duration of ventilatory support and ICU readmission
average 1 month during the hospitalization
Thirty Day Mortality
Tijdsspanne: within 30 days of discharge
Thirty day mortality
within 30 days of discharge
Number of Hospital Readmissions and Emergency Room Visits
Tijdsspanne: Within 30 days after discharge
Number of hospital readmissions and emergency room visits
Within 30 days after discharge
Incidence of Organ Failures Assessed by the Daily SOFA Score
Tijdsspanne: average 1 month during the hospitalization
Incidence of organ failures assessed by the daily SOFA score
average 1 month during the hospitalization
Measures of Inflammation
Tijdsspanne: average 1 month during the hospitalization
Measures of inflammation (C-reactive protein, TNF-alpha; IL-6) and oxidative stress markers
average 1 month during the hospitalization
Major Cardiovascular Events
Tijdsspanne: within 3 months after discharge
  1. Acute myocardial infarction : (1) typical increase and gradual decrease (troponin) or (2) more rapid increase and decrease (creatine kinase MB) of biochemical markers of myocardial necrosis with at least one of the following: (a) ischemic symptoms, (b) development of pathologic Q waves on the electrocardiogram, (c) electrocardiographic changes indicative of ischemia (ST-segment elevation or depression), or (d) coronary artery intervention (e.g., coronary angioplasty).
  2. Congestive heart failure
  3. Cardiac arrhythmias: malignant arrhythmia
within 3 months after discharge
Surgical Wound Infection
Tijdsspanne: within 3 months after discharge
Superficial and deep sternal wound infection
within 3 months after discharge
Pneumonia (CDC Criteria)
Tijdsspanne: Within 3 months after discharge
Pneumonia (CDC criteria)
Within 3 months after discharge
Cerebrovascular Events
Tijdsspanne: within 3 months after discharge
permanent stroke and reversible ischemic neurologic deficit
within 3 months after discharge

Medewerkers en onderzoekers

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

Sponsor

Emory University

Medewerkers

American Diabetes Association

Onderzoekers

  • Hoofdonderzoeker: Guillermo E Umpierrez, MD, Emory University

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 juni 2011

Primaire voltooiing (Werkelijk)

1 december 2013

Studie voltooiing (Werkelijk)

1 december 2013

Studieregistratiedata

Eerst ingediend

3 februari 2011

Eerst ingediend dat voldeed aan de QC-criteria

26 mei 2011

Eerst geplaatst (Schatting)

27 mei 2011

Updates van studierecords

Laatste update geplaatst (Schatting)

31 december 2014

Laatste update ingediend die voldeed aan QC-criteria

18 december 2014

Laatst geverifieerd

1 december 2014

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • IRB00048356
  • 00048356-2010 (Andere identificatie: Other)

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