Comparative Outcomes Related to Delivery-room Cord Milking In Low-resourced Kountries

Hypoxic-ischemic encephalopathy (HIE) is a brain injury caused by inadequate blood flow and oxygen delivery to the neonatal brain. Almost all infants with severe HIE and 30-50% infants with moderate HIE either die or develop significant developmental delay, cerebral palsy or other disabilities.The incidence of HIE is 1-3 per 1,000 term births in developed countries and 15-20 times higher in developing countries (Worldwide, 0.5 to 1 million infants develop HIE each year). Therapeutic hypothermia is the only proven therapy for infants with HIE. Even after receiving therapeutic hypothermia, one-half of all infants with moderate and severe HIE die or develop neurological and functional impairment. Therapeutic hypothermia is not widely available and ineffective in developing nations.There is an urgent need for a new therapy for neonates with HIE, which can complement hypothermia and be readily available in developing nations. Stem cell transplantation is a potential therapy for infants with HIE. Umbilical cord blood is a rich source of stem cells. Umbilical cord milking (UCM) may have similar effect as autologous umbilical cord blood cell transplantation.

Preliminary evidence suggests a placental transfusion in term infants may be a neuroprotective mechanism that can also facilitate cardiovascular transition for neonates depressed at birth and result in decreased mortality and improved neurodevelopmental outcomes. Infants with HIE, due to varied complications during the birth process, have poor perfusion due to fetal blood volume loss to the placenta. However, the most common method of providing placental blood, delayed cord clamping (DCC) cannot be performed since infants with HIE are non-vigorous and providers often need to perform resuscitation immediately after birth. The World Health Organization and the American College of Obstetrics and Gynecology (ACOG) also does not recommended DCC in neonates who are non-vigorous (limp, pale, and not breathing) at birth and require immediate resuscitation. Umbilical cord milking (UCM) or gently squeezing cord blood toward the baby, is an alternative to DCC, which can achieve significant placental transfusion without delaying resuscitation. Further, UCM can be completed as quickly as immediate cord clamping (ICC) and UCM requires minimal training and no additional staff.

The investigators hypothesized that UCM will reduce the number of infants developing moderate to severe HIE or death in neonates who are non-vigorous at birth compared to early cord clamping (ECC). This will be a cluster crossover randomized controlled trial. Each hospital will be randomly assigned to use either ECC or UCM for any infant who is non-vigorous at birth and needing resuscitation over a period of 6 months. Then the site will change to the other method for an additional 6 months.

Inclusion criteria

• Non-vigorous neonates born between 35-42 weeks

Exclusion criteria

• Congenital malformation of CNS.
• Chromosomal abnormalities.
• Major congenital malformations.
• Abruption/cutting through the placenta at delivery.
• Umbilical cord knots or inadequate cord length.
• Mono-chorionic twins or twins with no information on amnion/chorion.
• Multiple gestation >2 .