Abstract

Abstract Introduction Older people with diabetes are often admitted with falls, dizziness or confusion that may stem from undiagnosed episodes of hypoglycaemia. We examined the use of a 10-day period of round the clock glucose monitoring (CGM), to detect hypoglycaemia in older people with diabetes with symptoms potentially related to hypoglycaemia. Methods Population: Age 75 years and older, on sulfonylureas and/or insulin, presenting to hospital with a fall and/or symptoms suggestive of unrecognised hypoglycaemia. Design Single-centre, observational study (no change to standard diabetes care). Intervention: 10 days of CGM with Dexcom G6 sensor and Android app on smartphone to continuously transmit data. Primary outcomes Proportion of participants with captured hypoglycaemia; within that group, time spent in the hypoglycaemic range (Battelino T, Danne T, Biester T, et al. Diabetes Care. 2019;42(8):1593-603.). Secondary outcomes Overall time in range; emergency department re-attendances and/or hospital re-admissions for falls, fractures, heart attacks, ischaemic strokes and death within 30 days. REC IRAS project ID: 301286. Results 26 eligible participants of which 13 consented to participate. At the time of writing, nine participants (mean age 81 years) completed the study. There were no reports of pain or skin reactions from the participants. Hypoglycaemic events were captured in 3 of 9 participants, with two participants suffering >1 hour below 3.9mmol/L. Only 3 participants achieved >50% time in range target (3.9-10.0mmol/L). Discussion We have detected significant hypoglycaemic episodes in our participants. CGM should be used more widely in older patients with diabetes who present with falls, dizziness or confusion. Limitations include issues around data capture due to participants struggling to navigate the mobile phone app. Despite this, all participants felt that CGM was better than finger-prick glucose testing. Future work is needed to explore how CGM can be deployed after acute admissions in this patient group.

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