clinical practice guides recommend delayed clamping of the umbilical cord. if this is not possible, some authors suggest milking as an alternative. the objective of this study was to determine the variability in professional practice in the management of umbilical cord clamping and milking and to identify factors or circumstances associated with the different methods. An observational cross-sectional study done on 1,045 obstetrics professionals in Spain in 2018. A self-designed questionnaire was administered online. the main variables studied were type of clamping and use of milking. crude odds ratios (oR) and adjusted odds ratios (ORa) were estimated using binary logistic regression. 92.2% (964) performed delayed clamping. 69.3% (724) clamped the cord when it stopped beating. 83.8% (876) had heard of milking, and 55.9% (584) had never performed it. Professionals over 50 were less likely to perform delayed clamping, with an ORa of 0.24 (95% CI: 0.11-0.52), while midwives were more likely to perform delayed clamping than obstetricians, with an ORa of 14.05 (95% CI: 8.41-23.49). There is clinical variability in the management of umbilical cord clamping and the use of milking in normal births. part of this variability can be attributed to professional and work environment factors. Umbilical cord clamping and cutting are done in the third stage of labour. Two types of clamping have been described, depending on how long after birth they are performed: early and delayed. In early umbilical cord clamping (ECC), the cord is clamped within the first minute after birth, while in delayed cord clamping (DCC), the clamping is done between one and three minutes of birth, or when the cord stops beating 1-4. It should be pointed out that, since 2010, ILCOR recommend that the cord should not be clamped within one minute 5. Among the advantages for the newborn, it has been observed that DCC in term newborns resulted in increased levels of haemoglobin at birth and, consequently, better iron levels in the first few months of life, which can have a favourable impact on the child's development 6-9. In the case of preterm newborns, a reduction in rates of intraventricular haemorrhage and necrotising enterocolitis has been observed, as well as a reduced need for transfusion. If ECC is performed, there is an increase in the mortality rate with respect to DCC 10. However, an increased risk of jaundice has been described 11. With regard to mothers, in 2013, McDonald et al. concluded that DCC was not related to an increased risk of postpartum haemorrhage (PPH) or a difference in postpartum haemoglobin levels compared with early clamping 2. Due to the impact that clamping has on maternal-foetal health 3,6,8-11 international Clinical Practice Guides (CPGs) recommend this procedure DCC in all births, when possible 12-15. When DCC is not possible for any reason, such as immediate neonatal resuscitation or maternal haemodynamic instability, umbilical cord milking (UCM)has been proposed as an alternative option to DCC. This technique consists of ...