Maternal-neonatal vitamin K deficency secondary to maternal biliopancreatic diversion

Bariatric surgery has become a common therapeutic approach for severe obesity, in case of unsuccessful behavioural and/or medical interventions. During the past years, the number of obese women who underwent bariatric surgery in childbearing age has progressively increased. We report a case of vitamin K deficiency, due to maternal biliopancreatic diversion, resulting in a symptomatic clinical presentation in the mother and in a hypocoagulable state in her neonate.