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CompletedNCT04812223Updated Aug 3, 2021

Timing of Umbilical Cord Clamping in Term Cesarean Deliveries

An interventional study of Delayed umbilical cord clamping and Early umbilical cord clamping in Cesarean Delivery and Delayed Separation of Umbilical Cord, sponsored by Acibadem University. Completed at 1 site in Turkey. Open to female participants aged 18 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-08-03.

Sponsored by Acibadem University · Not applicable, Interventional, and Supportive care

Phase
Not applicable
Study type
Interventional
Enrollment
204
Allocation
Randomized
Ages
18 Years to 50 Years
Sex
Female
01

Study summary

The aim of this study is to show that delayed umbilical cord clamping or milking of the umbilical cord in pregnant women undergoing elective cesarean delivery might have better effects than early clamping, on neonatal results without causing maternal hemorrhage or negatively affecting the neonatal outcome , and to compare the superiority of these three methods to each other.

Read the detailed description

Late clamping of the umbilical cord has been shown to have positive effects such as higher neonatal hemoglobin level, higher iron stores in the newborn around three to six months, and better neurological development. In 2017, American College of Obstetricians and Gynecologists (ACOG) recommended a minimum 30-60 seconds delayed clamping of the cord after a minimum of 30-60 seconds, regardless of the delivery method, in both term and preterm newborns. In addition, optimal placental transfusion can be achieved due to strong uterine tonus in vaginal delivery. However, this is not possible due to decreased uterine tonus and time constraint in cesarean delivery. The main concern in delayed clamping and milking of the umbilical cord is the possibility of maternal anemia due to excessive maternal blood loss in the short term, the need for maternal blood transfusion or maternal intensive care support, and the possibility of conditions such as hyperbilirubinemia, symptomatic polycythemia, and long hospital stay that may cause the need for phototherapy in the newborn. Although there are many studies in the literature regarding the neonatal results of the clamping timing of the umbilical cord, there are a limited number of articles regarding the results in patients who underwent term elective cesarean section. The aim of this study is to show that delayed umbilical cord clamping or milking of the umbilical cord in pregnant women undergoing elective cesarean delivery might have better effects than early clamping, on neonatal results without causing maternal hemorrhage or negatively affecting the neonatal outcome , and to compare the superiority of these three methods to each other.

02

Conditions studied

  • Cesarean Delivery
  • Delayed Separation of Umbilical Cord

Keywords

  • Cesarean delivery
  • Umbilical cord clamping
  • Delayed umbilical cord clamping
03

In context

Lead sponsor

Acibadem University is the lead sponsor of 210 studies on the registry; 50 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 50 Years
Sexes eligible
Female
Accepts healthy volunteers
Yes

Inclusion criteria

  • > 37 weeks uncomplicated singleton pregnancy
  • Elective cesarean delivery
  • Cesarean section under regional anesthesia

Exclusion criteria

Exclusion Criteria:

  • \< 37 weeks pregnancy
  • Surgery performed under general anesthesia
  • Emergent cesarean
  • Multiple pregnancy
  • Medically unstable mother or fetus
  • Uncontrolled maternal diabetes
  • Major congenital malformation of chromosomal abnormality of the fetus
  • Intrauterine growth retardation
  • Prenatal asphyxia suspicion
  • True knot in the umbilical cord
  • İn case of meconium aspiration syndrome suspicion
05

Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
204 participants (actual)

Study arms

  • Active comparator
    Delayed Clamping

    In this group, the umbilical cord will be clamped 60 seconds after the baby is born.

    Procedure: Delayed umbilical cord clamping

  • Active comparator
    Early Clamping

    In this group, the umbilical cord will be clamped 15 seconds after the baby is born.

    Procedure: Early umbilical cord clamping

  • Active comparator
    Milking Clamping

    In this group in which the umbilical cord will be milked, the cord will be milked 5 times with 2 seconds milking, then letting 2 seconds for spontaneous blood flow.

    Procedure: Milking of the umbilical cord

Interventions

  • ProcedureDelayed umbilical cord clamping

    The umbilical cord will be clamped 60 seconds after the baby is born.

  • ProcedureEarly umbilical cord clamping

    The umbilical cord will be clamped 15 seconds after the baby is born.

  • ProcedureMilking of the umbilical cord

    The cord will be milked 5 times with 2 seconds milking, then letting 2 seconds for spontaneous blood flow.

06

What researchers measure

Primary outcomes

  1. Postpartum maternal hemorrhage

    Preoperative and postoperative hemoglobin values will be recorded.

    Time frame: On postoperative day 0 and day 2

Secondary outcomes

  1. Postpartum maternal anemia

    Blood loss during surgery, need for blood transfusion after surgery will be recorded.

    Time frame: İn postpartum 48 hours

  2. Neonatal outcomes

    Weight of the baby

    Time frame: Postpartum day 0

  3. Postpartum complaints

    Postpartum nausea, vomiting, headache, dyspnea will be recorded

    Time frame: İn postpartum 48 hours

  4. Neonatal anemia

    Hematocrit levels of the newborn will be measured

    Time frame: On postpartum day 2

  5. Neonatal jaundice

    Bilirubin levels of the newborn will be measured.

    Time frame: On postpartum day 2

  6. Neonatal intensive care unit admission

    Neonatal intensive care unit admissions in postpartum 5 days will be recorded.

    Time frame: In postpartum 5 days

  7. Maternal outcomes

    Postpartum maternal blood pressure, pulse will be recorded

    Time frame: On postpartum day 2

  8. Newborn phototherapy need

    Need of newborn phototherapy in postpartum 2 weeks will be recorded.

    Time frame: In postpartum 2 weeks

  9. Newborn positive pressure ventilation

    Need of newborn positive pressure ventilation in postpartum 5 days will be recorded.

    Time frame: Postpartum 5 days

07

Study locations

1 site
  • Acibadem Maslak Hospital
    Istanbul, Sariyer 34457, Turkey
08

References and documents

Publications

  • Committee Opinion No. 684: Delayed Umbilical Cord Clamping After Birth. Obstet Gynecol. 2017 Jan;129(1):1. doi: 10.1097/AOG.0000000000001860. PubMed 28002310 ↗
  • Mercer JS, Erickson-Owens DA. Rethinking placental transfusion and cord clamping issues. J Perinat Neonatal Nurs. 2012 Jul-Sep;26(3):202-17; quiz 218-9. doi: 10.1097/JPN.0b013e31825d2d9a. PubMed 22843002 ↗
  • McDonald SJ, Middleton P, Dowswell T, Morris PS. Effect of timing of umbilical cord clamping of term infants on maternal and neonatal outcomes. Cochrane Database Syst Rev. 2013 Jul 11;2013(7):CD004074. doi: 10.1002/14651858.CD004074.pub3. PubMed 23843134 ↗
  • Songthamwat M, Witsawapaisan P, Tanthawat S, Songthamwat S. Effect of Delayed Cord Clamping at 30 Seconds and 1 Minute on Neonatal Hematocrit in Term Cesarean Delivery: A Randomized Trial. Int J Womens Health. 2020 Jun 23;12:481-486. doi: 10.2147/IJWH.S248709. eCollection 2020. PubMed 32607000 ↗
  • Purisch SE, Ananth CV, Arditi B, Mauney L, Ajemian B, Heiderich A, Leone T, Gyamfi-Bannerman C. Effect of Delayed vs Immediate Umbilical Cord Clamping on Maternal Blood Loss in Term Cesarean Delivery: A Randomized Clinical Trial. JAMA. 2019 Nov 19;322(19):1869-1876. doi: 10.1001/jama.2019.15995. PubMed 31742629 ↗
  • Qian Y, Ying X, Wang P, Lu Z, Hua Y. Early versus delayed umbilical cord clamping on maternal and neonatal outcomes. Arch Gynecol Obstet. 2019 Sep;300(3):531-543. doi: 10.1007/s00404-019-05215-8. Epub 2019 Jun 15. PubMed 31203386 ↗

Individual participant data

Plan to share: No — Study protocol, statistical analysis might be shared when the study is completed upon request.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 3, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04812223
Lead sponsor
Acibadem University
Responsible party
Esra Ozbasli (Assistant Professor, Acibadem University) — Principal investigator
First posted
Mar 23, 2021
Start date
Mar 25, 2021
Primary completion
Jul 25, 2021
Completion
Jul 29, 2021
Last update
Aug 3, 2021

Study contacts

Mete Gungor, MD, Prof.
study director · Acıbadem Mehmet Ali Aydınlar University

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jul 2021. You cannot join it, but the record below documents what was studied.

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