Seventy-seven pregnancies (79 infants) complicated by hyperthyroidism were seen at three Dublin Maternity Hospitals during a 25 year period. Hyperthyroidism was diagnosed following conception in 14 pregnancies. Treatment was with carbimazole alone in 73 pregnancies, in a usual dose of 5 to 10 mg daily. The total fetal loss was 15-2 per cent with a perinatal loss of 5 -1 per cent. The perinatal loss in patients treated with carbimazole alone was 4.1 per cent (excluding one death due to congenital malformation). Four infants (5.1 per cent) had goitre and 57 (85 * 1 per cent) of the surviving infants were above the 25th centile for gestational age. Spontaneous premature labour occurred in 7 pregnancies (9 * 1 per cent). There was a relative excess of infants with a birth weight less than the 25th centile, of neonatal goitre and premature labour after pregnancy in which treatment was started following conception. Hyperthyroidism complicating pregnancy can be treated effectively with antithyroid drugs given alone and in the minimal effective dose.
PATIENTS AND METHODSAll patients were seen by one of us (M.I.D.) at the National Maternity and Coome Lying-in Hospitals during the years 1960 to 1979 inclusive, * Present address: Hammersmith Hospital, Ducane Road, London W12OHS.
A controlled trial of pen injection of insulin was performed in 78 patients, with assessment of metabolic control and lifestyle. After a 6-week run-in period, during which control was optimized, the patients were randomized, either to stay on a twice daily insulin regimen (n = 37), or to change to a three times daily pen regimen with human ultralente at night (n = 41). Over the 20 weeks, there was no significant change in mean glycosylated haemoglobin (syringe, mean +/- SD, 11.1 +/- 2.5% to 10.9 +/- 2.0%; pen, 11.3 +/- 2.6% to 11.2 +/- 2.0%), in blood glucose profiles or in frequency of hypoglycaemic attacks in either group. A self-completed questionnaire demonstrated high patient satisfaction with the pen injector (NovoPen), 78% for effect on lifestyle and 81% for increased flexibility. Ninety-five percent preferred the pen injector regimen to conventional treatment and stayed on it.
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