A 74-year-old woman with Type 1 diabetes died from diabetic ketoacidosis (DKA) in an aged care facility. Between 7-10 December 2016, her blood glucose levels remained persistently elevated (>33 mmol/L) despite escalating insulin doses. Critical failures included: inadequate monitoring of vital signs and ketones; lack of 'sick day' management protocols; no blood ketone testing despite recommendation; poor documentation of clinical assessments; and crucially, failure to ensure timely hospital transfer despite medical deterioration. The patient refused transfer on three occasions, but experts found her decisional capacity was impaired by severe hyperglycaemia (BGL >15 mmol/L causes cognitive changes). No doctor personally assessed her to discuss risks or confirm her competence. Earlier recognition of the deterioration pattern, implementation of sick day guidelines, and proactive escalation with formal capacity assessment could have enabled life-saving intensive care treatment.
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Specialties
general practiceendocrinologyemergency medicineintensive caregeriatric medicine
diabetic ketoacidosistype-1 diabetes mellitushyperglycaemiasevere hyperglycaemiaimpaired cognitive function secondary to hyperglycaemiadehydrationperipheral vascular diseaseischaemic heart diseasecerebrovascular diseaserenal artery stenosisatrial fibrillationdepression
Contributing factors
Inadequate monitoring of vital signs and clinical deterioration
Failure to perform blood ketone testing despite medical recommendation
Lack of 'sick day' management protocols for Type 1 diabetes
Poor documentation in medical and nursing records
No formal assessment of patient's decisional capacity regarding hospital transfer
Absence of medical review by treating physician between 7-10 December 2016
Failure to recognize emerging pattern of persistent hyperglycaemia as medical emergency
Poor communication between facility staff and treating GPs regarding deterioration
Patient's decisional capacity impaired by severe hyperglycaemia but not formally assessed
Facility reliance on patient refusal without exploring informed consent or capacity
Coroner's recommendations
Implementation of specific medical training on diabetes assessment, management, and response to uncontrolled hyperglycaemia in aged care
Adoption of accepted expert guidelines such as McKellar Guidelines for Managing Older People with Diabetes in Residential and Other Care Settings
Implementation of improved diabetes charts incorporating all relevant information to maintain treatment overview
Implementation of bedside testing for blood ketones for monitoring sick diabetic residents
Implementation of policies ensuring medical assessment of medical and cognitive state in patients refusing hospital transfer where no advance care directive precludes treatment
Implementation of 'sick day' management plans for diabetic residents including frequent BGL monitoring, ketone testing, fluid maintenance, and insulin adjustment protocols
Development of clear escalation protocols linking abnormal BGLs and reduced cognition to clinical escalation pathways
Establishment of formal decisional capacity assessment procedures before accepting patient refusal of hospital transfer
Enhanced communication protocols between facility staff, treating practitioners, and families regarding resident deterioration
Improvement of medical record-keeping with documentation of vital signs, fluid balance, dietary intake, and cognitive observations
Tailoring of Advance Care Directives specifically to diabetic conditions and acute medical emergencies
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