How the Clamping Distance of the Umbilical Cord affects Microbial Colonization and Cord Separation Time: A Randomized...

This study aimed to explore how umbilical cord separation time and microbial colonization are affected by umbilical cord clamping distance.

The randomized controlled study included 99 healthy newborns and was conducted at a hospital in Kahramanmaras, Turkey. The newborns were randomly divided into 3 groups: intervention group I (cord length: 2 cm); intervention group II (cord length: 3 cm; control group (not measured). On postpartum day 7, a sample of the umbilical cord was taken to assess microbial colonization. The mothers were contacted via mobile phone on the 20th day for an at-home follow-up. The data were analyzed by applying Pearson's chi-square test, Fisher's exact test, a 1-way analysis of variance test, and Tukey's post hoc Honest Significant Difference test.

The mean umbilical cord separation time of the newborns was found to be 6.9 (±2.1) days in the intervention group I, 8.8 (±2.9) days in the intervention group II, and 9.5 (±3.4) days in the control group. The difference between the groups was statistically significant (P < .01). Microbial colonization was detected in 5 of the newborns, across the groups; no significant differences were found between the groups (P > .05).

In this study, it was determined that clamping the umbilical cord from a distance of 2 cm in vaginally delivered full-term newborns contributed to the shortening of the cord fall time and did not affect microbial colonization.