[Multiple pregnancies--Part 2].

Increasing rates of multiple pregnancies with ensuing clinical problems such as prematurity, fetal growth disorders and specific disorders of multiple pregnancies are a challenge for providers of prenatal care and delivery. In general clinical and scientific data regarding prenatal care (e.g. use of tocolytics) and birth surveillance (e.g. mode of delivery) are less abundant and valid for multiple pregnancies than for singleton pregnancies. This is why in particular prematurity and supervision of birth are discussed in the following articles. Obviously there is need for multidisciplinary prospective multicenter studies on various problems of multiple pregnancies.