First year follow-up of extremely low birth weight premature sextuplets: case report.

High order gestation rates have increased in many western countries in the last decades, which is mostly attributable to a contemporaneous increase in maternal age and infertility treatment. Multiple births have been associated with increased maternal and foetal morbidity and mortality during pregnancy and delivery, including the higher risk for spontaneous abortion, preeclampsia, hydramnios, and maternal haemorrhage. A higher frequency of preterm infants and low birth weight infants have also been reported, as well as a higher rate of malformations, abnormal growth, and trauma at delivery, than in singleton pregnancies.