Large fibre, small fibre and autonomic neuropathy in adolescents with type 1 diabetes: A systematic review.

2021 
Abstract Aims To estimate the prevalence of neuropathy in adolescents with type 1 diabetes. Methods Systematic collection of published studies exploring the prevalence of large fibre neuropathy (LFN), small fibre neuropathy (SFN), and autonomic neuropathy in adolescents with type 1 diabetes. Following prospective registration (Prospero CRD42020206093), PubMed, EMBASE, and Cochrane Library were searched for studies from 2000 to 2020. PICO framework was used in the selection process (Population: adolescents aged 10–19 years with type 1 diabetes; Intervention: diagnostic methods for neuropathy; Comparison: reference data; Outcome: data on prevalence or comparison). Data were extracted concerning study quality based on available data and established methods for determining and diagnosing various neuropathy types. Results From 2,017 initial citations, 27 studies (7589 participants) fulfilled eligibility criteria. The study population (47% males) had a diabetes duration between 4.0 and 10.6 years, and HbA1c level between 7.3 and 10.8%, 56–95 mmol/mol. The prevalence of LFN, based on nerve conduction studies, was 10–57%. Based on other tests for neuropathy, the prevalence of LFN and SFN was 12–62%, and that of cardiac autonomic neuropathy was 12–75%. Conclusion The described prevalence of neuropathy in adolescents with type 1 diabetes varied, which can be methodological due to different screening methods and classifications of neuropathy.
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