A 27-week fetus with hydrops fetalis associated with fetal tachyarrhyt
hmia and adenovirus infection was documented by viral polymerase chain
reaction (PCR). The fetal tachyarrhythmia was converted to normal sin
us rhythm by maternal pharmacological therapy with digoxin. Subsequent
ly, resolution of the hydropic changes occurred and a viable normal-ap
pearing preterm fetus at 29 weeks' gestation was delivered after prete
rm labour. This case demonstrates the first documented report of intra
uterine adenovirus-associated fetal tachyarrhythmia and hydrops fetali
s. (C) 1998 John Wiley & Sons, Ltd.