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A Comparison of Variable Versus Fixed Insulin Infusion Rate on Resolution of Diabetic Ketoacidosis.
American Journal of Therapeutics 2023 March 4
BACKGROUND: Diabetic ketoacidosis (DKA) is a well-known, potentially fatal complication of diabetes. The American Diabetes Association hyperglycemic crises guidelines suggest the use of intravenous insulin in patients presenting with DKA, along with a recommended rate of glucose reduction of 50-75 mg/dL/h. However, no specific guidance is provided regarding how to best achieve this rate of glucose decline.
STUDY QUESTION: Is there a difference in time to DKA resolution between a variable intravenous insulin infusion strategy and a fixed infusion strategy in the absence of an institutional protocol?
STUDY DESIGN: Single-center, retrospective cohort study of DKA patient encounters in 2018.
MEASURES AND OUTCOMES: Insulin infusion strategy was considered to be variable if the infusion rate changed within the first 8 hours of therapy or was considered fixed if the rate remained unchanged for the same period. The primary outcome was time to resolution of DKA. Secondary outcomes were hospital length of stay, intensive care unit length of stay, hypoglycemia, mortality, and DKA recurrence.
RESULTS: The median time to resolution of DKA was 9.3 hours in the variable infusion group compared with 7.8 hours in the fixed infusion group (HR, 0.82; 95% CI, 0.43-1.5, P = 0.5360). Severe hypoglycemia was observed in 13% of patients in the variable infusion group and in 50% of patients in the fixed infusion group (P = 0.006).
CONCLUSIONS: In this analysis, insulin infusion strategy (variable vs. fixed) was not associated with a significant difference in the time to resolution of DKA in the absence of an institutional protocol. The fixed infusion strategy was associated with a higher incidence of severe hypoglycemia.
STUDY QUESTION: Is there a difference in time to DKA resolution between a variable intravenous insulin infusion strategy and a fixed infusion strategy in the absence of an institutional protocol?
STUDY DESIGN: Single-center, retrospective cohort study of DKA patient encounters in 2018.
MEASURES AND OUTCOMES: Insulin infusion strategy was considered to be variable if the infusion rate changed within the first 8 hours of therapy or was considered fixed if the rate remained unchanged for the same period. The primary outcome was time to resolution of DKA. Secondary outcomes were hospital length of stay, intensive care unit length of stay, hypoglycemia, mortality, and DKA recurrence.
RESULTS: The median time to resolution of DKA was 9.3 hours in the variable infusion group compared with 7.8 hours in the fixed infusion group (HR, 0.82; 95% CI, 0.43-1.5, P = 0.5360). Severe hypoglycemia was observed in 13% of patients in the variable infusion group and in 50% of patients in the fixed infusion group (P = 0.006).
CONCLUSIONS: In this analysis, insulin infusion strategy (variable vs. fixed) was not associated with a significant difference in the time to resolution of DKA in the absence of an institutional protocol. The fixed infusion strategy was associated with a higher incidence of severe hypoglycemia.
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