ABSTRACT
Through the application of extended culture techniques, we have been given the opportunity to offer more responsible medical care to our patients by reducing the number of preembryos for transfer. Unfortunately, selective reduction of one or more fetuses is all too often necessary when higher-order gestations are established, and the procedure itself carries obvious medical and emotional risks1-4. Multifetal gestations are the largest single cause of poor obstetrical outcome and subsequent neonatal difficulties, these pregnancies being associated with increased incidences of pre-eclampsia, gestational diabetes, pregnancy-induced hypertension, preterm labor, low birth weight and extensive neonatal care (Figure 6.1)5.
