A multidisciplinary approach in any fetus with any arrhythmia serious enough to cause fetal hydrops is mandatory. Perinatologists, neonatologists, and cardiologists must be prepared to exert efforts in concert if such infants are to survive. Usually there is at least some warning that such an infant is being delivered, but in the event that specialists are not all in attendance, the physician assuming responsibility for care must be ready to intubate, do pleural and pericardial taps and a paracentesis if necessary, and treat the arrhythmia responsible for fetal CHF.