The impact of delayed cord clamping (DCC) and umbilical cord milking (UCM) on neonatal anemia
Maryam Nakhaee Moghadam
Delayed cord clamping is done at least 1 to 9 minutes after birth. On the contrary, early cord clamping is done less than 91 seconds after birth (1). The proper time for clamping the umbilical cord has been discussed since the mid-1950s, and despite many studies that have taken place on the benefits of delayed clamping in comparison to the early form, the ideal and appropriate time to do so has not yet been agreed upon. Searches were conducted by two independent researchers in international (PubMed, Web of science, Scopus and Google scholar) and national (SID, Magiran) databases for related studies from the inception of the databases to September 2017 (without time limitation) in English and Persian languages. To ensure literature saturation, the reference lists of included studies or relevant reviews identified through the search were scanned. The specific search strategies were created by a Health Sciences Librarian with expertise in systematic review search using the MESH terms and free terms according to the PRESS standard. Delayed cord clamping in term newborns can increase the level of hemoglobin and ferritin in early infancy and it can be considered as a safe way to prevent anemia in infancy. In some studies, a slight increase in bilirubin levels without jaundice, and the need for phototherapy and the creation of benign polycytonis are considered as possible complications for delayed cord clamping in term neonates. Using delayed cord clamping technique provides several advantages in preterm and LBW infants, including increased levels of hemoglobin, volume and blood pressure in the infant, resulting in reduced blood transfusion and complications.