[1] Univ Matern Hosp Nancy, Dept Anaesthesiol, 10 Ave Dr Heydenreich, F-54000 Nancy, France
[2] Univ Matern Hosp Nancy, Dept Obstetr Crit Care Unit, 10 Ave Dr Heydenreich, F-54000 Nancy, France
[3] Univ Hosp Nancy, Med Intens Care Unit, F-54511 Vandoeuvre Les Nancy, France