• Kristin Skogøy, Ricardo Laurini, and Erlend Tuseth Aasheim.
• kristin.skogoy@nordlandssykehuset.no
• Tidsskr. Nor. Laegeforen. 2009 Mar 12; 129 (6): 534-6.

AbstractBariatric surgery is increasingly used to treat morbidly obese patients. Fertility in women may be enhanced after these procedures, owing to substantial weight loss and possibly a decreased absorption of oral contraceptives. We report a pregnancy that occurred two months after biliopancreatic diversion with duodenal switch in a 32-year-old woman. She subsequently developed haemolysis, elevated liver enzymes and low platelets count (HELLP) syndrome and had a weight loss of 43 kg (from the bariatric procedure) until the infant was delivered preterm by caesarean section (due to low activity). The infant was small in relation to the gestational age, with a weight of less than 50 % of the expected (780 g at 29.6 weeks). Histological examination demonstrated a small placenta with insufficient spiral artery trophoblast infiltration, possibly caused either by severe preeclampsia or by maternal nutritional deficiencies. Severe metabolic aberrations may complicate pregnancies after malabsorptive bariatric surgery. Patient preparations before weight-loss operations should include information on fertility and birth control in the postoperative period. Protocols for monitoring of patients that become pregnant after bariatric surgery are needed.

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