A Systematic Review and Meta-Analysis of a Brief Delay in Clamping the Umbilical Cord of Preterm InfantsRabe H. · Reynolds G. · Diaz-Rossello J.
Background: The optimal timing of clamping the umbilical cord in preterm infants at birth is the subject of continuing debate. Objective: To investigate the effects of a brief delay in cord clamping on the outcome of babies born prematurely. Methods: A retrospective meta-analysis of randomised trials in preterm infants was conducted. Data were collected from published studies identified by a structured literature search in EMBASE, PubMed, CINAHL and the Cochrane Library. All infants born below 37 weeks gestation and enrolled into a randomised study of delayed cord clamping (30 s or more) versus immediate cord clamping (less than 20 s) after birth were included. Systematic search and analysis of the data were done according to the methodology of the Cochrane collaboration. Results: Ten studies describing a total of 454 preterm infants were identified which met the inclusion and assessment criteria. Major benefits of the intervention were higher circulating blood volume during the first 24 h of life, less need for blood transfusions (p = 0.004) and less incidence of intraventricular hemorrhage (p = 0.002). Conclusions: The procedure of a delayed cord clamping time of at least 30 s is safe to use and does not compromise the preterm infant in the initial post-partum adaptation phase.
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