• Matthew J L Hare, Jessica M Deitch, Matthew J Y Kang, and Leon A Bach.
• Department of Endocrinology and Diabetes, Alfred Health, Melbourne, Victoria, Australia.
• Intern Med J. 2021 Aug 1; 51 (8): 1292-1297.

BackgroundDiabetic ketoacidosis (DKA) is a potentially life-threatening but often preventable acute complication of type 1 diabetes (T1D). Understanding clinical and psychosocial characteristics of people with DKA, particularly those with multiple presentations, may aid the development of prevention strategies.AimsTo describe clinical, psychological and demographic factors in adults with DKA and particularly those factors associated with recurrent admissions.MethodsA retrospective analysis was performed of all admissions with DKA in people with T1D over a 4-year period from 1 November 2013 to 31 October 2017 at a metropolitan tertiary hospital in Australia. Potential cases were identified by International Classification of Diseases-10th Revision coding data. Data were then manually extracted by clinicians from the electronic medical record.ResultsThere were 154 clinician-adjudicated admissions for DKA among 128 people with T1D. Of these, 16 (13%) had multiple DKA admissions. Forty-one (32%) had a history of depression. The most common factors contributing to presentation included insulin omission (54%), infection (31%), alcohol excess (26%) and new diabetes diagnosis (16%). Compared to people with single admissions, those with recurrent DKA were more likely to smoke (69% vs 27%, P = 0.003), be unemployed (31% vs 11%, P = 0.04) and use illicit substances (44% vs 17%, P = 0.02).ConclusionsThere is a high prevalence of psychiatric illness, illicit substance use and social disadvantage among people admitted with DKA, particularly those with recurrent presentations. Insulin omission, often due to inappropriate sick day management, was the most common reason for DKA occurrence. Innovative multidisciplinary models of care are required to address these challenges.© 2020 Royal Australasian College of Physicians.

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