Background: 239 pregnancies occurred In 1136 women who had undergone b
iliopancreatic diversion (BPD). Methods: There were 73 abortions, and
14 pregnancies are presently in their course. The 152 term pregnancies
(six twins) occurred in 129 women 2-173 months (mean 42.7) after BPD.
Mean age and current excess weight were 31.4 years (20-42) and 29.1%(
-6.9-78.2), and mean excess weight loss was 72.9%(30.4-110.5). Results
: Mean weight gain during pregnancy was 6.2 kg (-21-25). In 32 patient
s (21%), parenteral nutritional support was needed, In all the other p
atients (79%), the usual supplementations were given. Of the newborns,
122 were delivered at term (84.7%) with a mean weight of 2842.4 g (17
60-4600 g) and a mean length of 48.5 cm (43-59 cm), while the 22 prete
rm babies (15.3%) weighed 2151.1 g (1400-3850 g) and had a length of 4
4.6 cm (33-56 cm), Forty infants (27.8%) were snell for gestational ag
e but 17 of them weighed more than 2500 g, Eleven twins (one abortion
at 26th week) were also delivered, with a mean weight of 2088.6 g (120
0-3100 g) and a mean length of 45.6 cm (35-50 cm). Delivery was sponta
neous in 85 instances (56%), while vacuum extractor was used in one, a
nd 66 cesarean sections were performed, There were two birth malformat
ions, one infant died after surgery for meconium obstruction and two d
ied from unknown causes, Of the 129 women, 35 had been infertile befor
e BPD. Conclusions: Disappearance of infertility and decrease of pregn
ancy risk are to be considered among the beneficial effects of weight
reduction following BPD.