A prospective, experimental clinical, was performed in 50 pregnant women in high risk obstetric Lima Maternity (INAMI) Hospital, between March and June 1990 to assess fetal conditions can stressante a different test to test oxytocin stressante (TSO) in terms of costs, resources and risks, but to produce a similar uterine response and therefore to give adequate and reliable information about fetal well-being. Gestational age in 49 cases, was between 37 and 41 weeks. A case of severe pre-eclampsia was 34 weeks. Electronic fetal monitoring (EFM) was performed with cardiotacógrafos two channels. A record will be made at baseline for 10-15 minutes, during which spontaneous and remote uterine contractions in pregnant women were registered 21 and no spontaneous contractions were recorded in 29. After breast stimulus started, one bilateral as appropriate, within 5 to 20 more minutes (latency pe...