The design of optimal courses for obstetric undergraduate teaching is a relevant question. This study evaluates two different designs of simulator-based learning activity on childbirth with regard to respect to the patient, obstetric manoeuvres, interpretation of cardiotocography tracings (CTG) and infection prevention. This randomised experimental study which differs in the content of their briefing sessions consisted of two groups of undergraduate students, who performed two simulator-based learning activities on childbirth. The first briefing session included the observations of a properly performed scenario according to Spanish clinical practice guidelines on care in normal childbirth by the teachers whereas the second group did not include the observations of a properly performed scenario, and the students observed it only after the simulation process. The group that observed a properly performed scenario after the simulation obtained worse grades during the simulation, but better grades during the debriefing and evaluation. Simulator use in childbirth may be more fruitful when the medical students observe correct performance at the completion of the scenario compared to that at the start of the scenario.

Aim: To evaluate obstetric and perinatal outcomes of twin pregnancies obtained after in vitro fertilization with donated oocytes. Methods: This is a case-control study comparing 50 women with twin pregnancies after oocyte donation and 50 women after in vitro fertilization with autologous oocytes. Clinical records were reviewed and obstetric and perinatal outcome variables including rates of preeclampsia, gestational diabetes, pregnancy induced hypertension, preterm delivery, premature rupture of membranes, cesarean delivery, birth weight, Apgar score, pH test were compared. Results: Women in the OD group were significantly older than those in the AO group (mean 40.8 versus 36 years old, p < 0.001). There were a higher risk of preeclampsia (OD 24% versus AO 8%), cesarean delivery (OD 90% versus AO 66%), and preterm birth before 37 weeks (OD 52% versus AO 32%). After adjustment for maternal age only the risk of preterm birth remained significantly higher [OR 3.2 (1.15–8.86); p = 0.025]. Comparing neonatal outcomes, there were no differences in birth weight, pH or Apgar score at birth. Conclusion: Twin pregnancies after oocyte donation are associated with a higher risk of preterm birth before 37 weeks of gestation. However, this did not translate into increased rate of adverse perinatal outcomes.