Unusual umbilical Doppler waveform and fetal distress likely due to hypercoiled cord.

Both reduced and increased umbilical cord coiling patterns have been associated with fetal distress and adverse perinatal outcomes, including fetal death. Prenatal diagnosis of cord coiling anomalies is challenging but potentially very useful for identifying those that may benefit from a more intensive monitoring. Nevertheless, there is no standardized approach for this potentially lethal complication when suspected. We report a case of fetal Doppler alterations and cardiotocographic anomalies likely due to hypercoiled cord in a 29-week primigravida referred to our clinic, who therefore underwent an emergency cesarean section. This case could help clinicians to consider cord anomalies as a possible cause of fetal distress.