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  • Title: Insulin infusion responses in diabetic ketoacidosis alone and with a mixed hypochloremic alkalosis.
    Author: Gupta D, Prasad A, Siddiqui F, Sitaula S, Albert SG.
    Journal: Diabetes Metab Syndr; 2019; 13(1):216-221. PubMed ID: 30641700.
    Abstract:
    AIMS: Although diabetic ketoacidosis (DKA) commonly presents as a pure diabetic ketoacidosis (PDKA), up to 30% of cases may be associated with a mixed hypochloremic metabolic alkalosis (HMA). It is unknown whether there is a difference in treatment outcomes between these two entities. We evaluated an insulin infusion protocol (IIP), previously validated for hyperglycemia management in ICU's, for the management of PDKA and HMA. MATERIALS AND METHODS: A retrospective case series/cohort study of 41 DKA admissions was further characterized as having PDKA or HMA. HMA was defined in those having an elevated delta-delta gradient (ΔAG-ΔHCO3) ≥ 5 mmol/L and base excess chloride (BECl) > 2.7 mmol/L. The main outcome measures were times to recovery of glucose levels to ≤250 mg/dL and of anion gap to ≤12 mmol/L. RESULTS: The initial serum glucose was 553 ± 265 mg/dL, serum bicarbonate of 8.8 ± 5.1 mmol/L, and venous pH 7.13 ± 0.2). Recovery of glucose occurred in 5 h: 25 min (±3 h:39min), and for anion gap in 11 h:25 min (±6 h:56min). HMA compared with PDKA had a delayed recovery of serum glucose (7 h: 23min ± 3 h: 35min vs. 4 h: 31min ± 3:h:21min, p = 0.017), which was due to the higher initial level of glucose (p = 0.02) rather than level of BECl (p = 0.17). There was no difference in time to anion gap closure between the PDKA and HMA. CONCLUSIONS: Correction of hyperglycemia and acidosis in PDKA as well as in HMA was managed through the IIP. The simultaneous fluid and electrolyte management corrected the hypochloremic alkalosis.
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