ABSTRACT
Once labour is properly established, both fetuses should be continually monitored by CTG traces. This is done most easily with a monitor designed for two fetuses although, if one of these is not available, two separate monitors can be used. Many advocate that the leading twin (twin 1) should be monitored using a scalp electrode but, with modern machines, there should be no problem with two abdominal transducers. Care must be taken that the two traces obtained are significantly different; it is relatively easy to produce two traces from the same fetus.
