Abstract

After the 20th century, early cord clamping become a routine operation in obstetrics domain. In recent years, however, a large number of studies have shown that delayed cord clamping (DCC) can improve the nutritional status and health outcomes of neonates, and DCC has been recommended by many internationally professional institutions and organizations including World Health Organization (WHO). Current researches indicate that DCC is extremely beneficial to neonates. For example, DCC can increase the blood volume of neonates, reduce the incidence of anemia, and reduce the incidence of complications, such as hypoxic-ischemia brain damage. However, there is no consensus on the optimal timing and other potential benefits and risks of DCC. Studies on the physiological significance of DCC to the neonates can not only confirm the physiological mechanisms of DCC, but also update the traditional concepts of health care staff about the timing of umbilical cord clamping, which contributes to the universal implementation and application of DCC. This article focuses on recent research status of the timing of DCC, DCC and placental transfusion, DCC and respiration functions of newborns, influences on newborns of DCC etc.. Key words: Delayed cord clamping; Hemoperfusion; Hypovolemia; Hemodynamics; Anemia, neonatal; Blood transfusion, autologous; Enterocolitis, necrotizing; Infant, newborn

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