The effect of continuous subcutaneous insulin infusion (c.s.i.i.) on the control of blood-glucose concentration and outcome of pregnancy was assessed in two pregnant diabetics (class B and class C classification) who were poorly controlled White with conventional insulin therapy. The insulin pump was enabled to ambulate freely. The the refill the syringe, to aug-ment patients the rate oat le and weekly, changed the implantation site the n thus, were able to leave the hospital. Daily glucose profiles were assessed 1-3 times a week, the Twenty-four n hours from both patients during impatient to insulin regimens, during c.s.i.i. which was maintained for 41 and 145 days, 24 hours glucose concentra-tions were y. reduced from 156 to 113 mg/mg/10000 mmL, mean fastiglucose from 152 to 1061l, mean variation (maximal excursion) 65 mg/100 ml. m The 75 results achieved with 8th the enabled both pat.