GLYCEMIC_CONTROL_IN_PERI_OPERATIVE_PATIENTS

GLYCEMIC_CONTROL_IN_PERI_OPERATIVE_PATIENTS - Improving...

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Unformatted text preview: Improving Patient Outcomes Improving GLYCEMIC CONTROL IN PERI-OPERATIVE GLYCEMIC PATIENTS PATIENTS UTILIZING INSULIN INFUSION PROTOCOLS Peter Baik, D.O. PGY-2, Department of Surgery St. Barnabas Hospital The Problem The Hyperglycemia is common in critically ill surgical patients, regardless Hyperglycemia of whether they had diabetes before hospital admission. of Control of blood glucose has been shifting toward progressively Control tighter glucose control in diabetics, a paradigm shift also reflected in the care of critically ill patients. Elevated blood glucose (BG) is associated with increased mortality in the ICU setting. in Hyperglycemia also causes substantial morbidity in critical illness, Hyperglycemia including increased risk of nosocomial infection, increased infarct size with worsened outcomes in myocardial infarction and ischemic cerebrovascular accident, and increased protein catabolism after burn injury. Hyperglycemia affects immune function Clinicians have also observed that elevated glucose promotes dehydration and inflammation. dehydration Post-operative patients are relatively insulin resistant Post-operative insulin The Studies The Van den Berghe and associates examined whether the control of Van hyperglycemia in critically ill patients can lead to improved outcomes in a prospective randomized trial. Study patients were admitted to the ICU for mechanical ventilation. Patients were randomly assigned to one of two groups: the first group received intensive insulin therapy with the goal of intensive trying to maintain glucose at between 80 and 110 mg/dL (ie, normoglycemia), while in the conventional treatment arm the goal glucose conventional was kept between 180 and 200 mg/dL. This study showed that intensive insulin control lowered mortality by > 40%. lowered It also showed that there was a decreased requirement for ventilator decreased support. Interestingly, a decreased need for renal replacement therapy was support Interestingly, also demonstrated. Control of hyperglycemia also decreased septic decreased episodes in the patients randomized to intensive insulin therapy by > 40%. episodes In totality, these studies make a compelling case that normoglycemia should be the rule rather than the exception in surgical patients in the ICU. (from Schwartz Principles of Surgery, Diabetes mellitus (DM): decreased insulin Diabetes production (type I) and/or increased insulin resistance (type II). resistance Insulin: -inhibits hepatic production of glucose - facilitates glucose transportation into cells cells - inhibits breakdown of fatty acids (thus decreasing ketone formation) decreasing - protein synthesis stimulation UNCONTROLLED DM: - reduction in inflammatory response reduction - reduction in angiogenesis - reduction in collagen synthesis Adapted from: Insulin delivery during surgery in the diabetic patient. Diabetes Care 1982;5(Suppl 1):65–77 patient. Diabetes Diabetes mellitus and cardiothoracic surgical site infections Diabetes American Journal of Infectious Control, Volume 33(6), August 2005, p American 353–359 353–359 Continuous Intravenous Insulin Infusion Reduces the Incidence of Deep Sternal Wound Infection in Diabetic Patients after Cardiac Surgical Procedures. Patients In Annals of Thoracic Surgery 1999; 67: 352-62. In - Q4 hour CBG and RISS (goal <200) VS Insulin Infusion utilizing the Portland VS CII Protocol CII (goal between 150-200) - 2467 patients evaluated Result: Significant reduction (2% in RISS patients vs 0.8% in Insulin infusion patients) in major infectious morbidity and its socioeconomic costs patients) Common concerns about intensive insulin infusion therapy: Common 1. Cost: A randomized controlled trial in mechanically ventilated patients 1. Cost admitted to a surgical ICU (Analysis of healthcare resource utilization with intensive Analysis insulin therapy in critically ill patients, Crit Care Med 2006; 34:3: 612-616) showed that insulin intensive insulin therapy (goal of 80 and 100 mg/dl) significantly reduced hospital costs by reducing morbidity and mortality (vs conventional therapy of 180 and 200 mg/dl) . Table 5. Per patient costs of health care resources in [Euro sign] (interquartile range) consumed in the intensive and conventional treatment groups From: Van den Berghe: Crit Care Med, Volume 34(3).March 2006.612-616 2. support personnel availability: support Intensive insulin infusion therapy initially requires glucose finger sticks (CBG’s) every 1 hour. However, a study performed at Yale University (Clinical Results of an Updated Insulin Infusion Protocol in Critically Ill Patients Diabetes Spectrum 18:188-191, 2005) has shown that the target glucose level was reached within about 6 hours. Once the serum glucose level stabilizes, the frequency of CBG’s can be decreased. Also, the protocols are followed by nurses. Thus, less time is spent on getting insulin orders from physicians. 3. Why the goal of 80-119 mg/dl?: The American Diabetes Association Why recommends pre-prandial glucose levels between 90-130 mg/dl. recommends Also, the study mentioned above showed improved morbidity (Analysis of healthcare Also, resource utilization with intensive insulin therapy in critically ill patients, Crit Care Med 2006; 34:3: 612-616). 612-616). 4. Concerns about hypoglycemia: a study at Yale University showed that study 4. Concerns even with a serum glucose goal of 80-119 mg/dl, the rate of hypoglycemic events increased from 0.2 to 0.3% in the CTICU and 0.3 to 0.4 %. events Clinical Results of an Updated Insulin Infusion Protocol in Critically Ill Patients in Diabetes Spectrum 18:188-191, 2005 Diabetes in Cardiothoracic ICU (Old target glucose levels: 100-139 mg/dl New target glucose levels: 90-119 mg/dl) (IIP: Insulin Infusion Protocol) Clinical Results of an Updated Insulin Infusion Protocol in Critically Ill Patients Protocol Diabetes Spectrum 18:188-191, 2005 Diabetes in Medical ICU (Old target glucose levels: 100-139 mg/dl New target glucose levels: 90-119 mg/dl) Implementation of insulin infusion therapy in peri-operative Implementation patients 1. 2. 3. 4. Intensive insulin infusion therapy to be available in D1 Intensive – D3. D3. Goal serum glucose levels between 80 and 120 mg/dl. Increased awareness of the need for tight glucose Increased control control Increased awareness that hyperglycemia occurs in Increased non-diabetic patients non-diabetic ...
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This note was uploaded on 12/27/2011 for the course STEP 1 taught by Professor Dr.aslam during the Fall '11 term at Montgomery College.

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