BMJ 1997;315:279-281 (2 August)

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Prospective population based survey of outcome of pregnancy in diabetic women: results of the Northern Diabetic Pregnancy Audit, 1994

Gillian Hawthorne, consultant physician,a S Robson, professor of fetal medicine,b E A Ryall, consultant obstetrician,c D Sen, research midwife,d S H Roberts, consultant physician,d M P Ward Platt, consultant paediatrician,e on behalf of the Northern Diabetic Pregnancy Audit

a Hartlepool General Hospital, Hartlepool TS24 9AH, b University of Newcastle upon Tyne, Royal Victoria Infirmary, Newcastle upon Tyne NE1 4LP, c North Tees General Hospital, Hardwick, Stockton on Tees TS19 8PE, d Diabetes Resource Centre, North Tyneside Hospital, North Shields, Tyne and Wear NE29 8NH, e Royal Victoria Infirmary, Newcastle upon Tyne NE1 4LP

Correspondence to: Dr Hawthorne

Objective: To determine whether the St Vincent declaration (1989) target of diabetic pregnancy outcome approximating non-diabetic pregnancy outcome is near to being achieved.
Design: Prospective collection of population based information on pregnancies in women with diabetes from all participating hospitals.
Setting: District general and teaching hospitals of the former Northern region.
Subjects: 111 diabetic women booking with pregnancy during 1 January to 31 December 1994.
Main outcome measures: Diabetic control, perinatal mortality rate, fetal abnormality rate.
Results: The perinatal mortality rate was 48/1000 for diabetic pregnancies compared with 8.9/1000 for the background population (odds ratio 5.38; 95% confidence interval 2.27 to 12.70) and the neonatal mortality rate was 59/1000 compared with 3.9/1000 (15.0; 6.77 to 33.10). Two late neonatal deaths were due to congenital heart defects. Six per cent of all fetal losses (6/109 cases) were due to major malformations. The congenital malformation rate was 83/1000 compared with 21.3/1000 (3.76; 2.00 to 7.06) in the background population.
Conclusion: Diabetic pregnancy remains a high risk state with perinatal mortality and fetal malformation rates much higher than in the background population.

Key messages

  • Though diabetic women who plan their pregnancies receive prepregnancy advice, most have poor diabetic control at conception

  • In diabetic pregnancies the perinatal mortality rate is five times higher, the neonatal mortality rate 15 times higher, and the congenital malformation rate four times higher than in the background population

  • There is a substantial excess of premature births in diabetic pregnancies

  • The outcome of diabetic pregnancy remains poor; better uptake of preconceptional care may improve outcome


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