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Endocrine Abstracts (2015) 39 EP53 | DOI: 10.1530/endoabs.39.EP53

Nottingham University Hospitals NHS Trust, Nottingham, UK.


Background: Cystic fibrosis related diabetes (CFRD) is associated with deterioration in clinical status. Lung function and nutritional status deteriorate up to 2–4 years before a diagnosis of CFRD based on the oral glucose tolerance test (OGTT). Timely detection and treatment is crucial.

Aims: To evaluate: i) adherence to CFRD screening guidelines and ii) whether identifying stages of progressive cystic fibrosis insulin deficiency (CFID) using the extended OGTT altered management. iii) trends in weight, BMI and FEV1 in CFRD as compared to CF controls.

Methods: Retrospective analysis using patients’ records. Seven patients with CFRD were compared to matched CF controls using mean z-scores for weight, BMI and FEV1.

Results: Records of 59 children were analysed.

Screening:

ModalityAge (years)n% adherence to guidelines
HbA1c and random glucose5–102117 (80%)
OGTT≥ 103830 (70%)

Outcomes:

n (%)ResultGlucose (mmol/l)
Peak2 h
6 (20)Normal
11 (36)CFID1 ≥8.2 <11.1
6 (20)CFID2 ≥11.1<11.1
7 (23)CFID3 <7≥11.1
0 (0)CFID4 ≥7 with fasting hyperglycaemia

The mean weight and BMI z-scores for those with CFRD compared to controls were −0.64 vs −0.02 (P=0.005) and −1.26 vs −0.03 (P=0.0001). Mean FEV1 was lower in CFRD 1.87l (73.06%) compared to controls 2.35l (89.03%). Three patients with CFID3 and one with CFID1 later commenced insulin based on clinical grounds.

Conclusions: Adherence to screening guidelines needs to be improved. Patients with CFRD have a significant declining trend in weight, BMI and FEV1 compared to controls. Some patients with CFID were commenced insulin on clinical grounds rather than results of extended OGTT. Whether treatment at earlier stages of CFID will slow down the rate of decline needs to be explored, but we have reverted back to the standard OGTT for the present.

Volume 39

43rd Meeting of the British Society for Paediatric Endocrinology and Diabetes

British Society for Paediatric Endocrinology and Diabetes 

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