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This study evaluates the effect of different umbilical cord clamping methods on peripheral blood hematopoietic stem cell counts in preterm newborns.
Preterm infants were randomly assigned to different umbilical cord clamping strategies as part of routine obstetric care. Peripheral blood samples were collected after birth to assess stem cell concentrations.
The aim of the study was to determine whether physiological cord management strategies could influence early hematologic adaptation in preterm infants. The study was conducted using standard clinical procedures without additional intervention beyond routine care.
This prospective randomized study was conducted to investigate the impact of different umbilical cord clamping methods on peripheral blood hematopoietic stem cell counts in preterm newborns.
Eligible preterm infants were randomly allocated to one of the predefined umbilical cord clamping strategies according to the study protocol. All procedures were performed as part of standard obstetric and neonatal care, and no experimental intervention outside routine clinical practice was applied.
Peripheral blood samples were obtained following delivery, and hematopoietic stem cell concentrations were analyzed using standard laboratory methods. The primary outcome was the comparison of stem cell counts between the different cord clamping groups.
The study was initiated and completed in 2015, prior to mandatory prospective clinical trial registration requirements. Ethical approval was obtained from the relevant institutional ethics committee, and informed consent was obtained from parents or legal guardians before participation.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Immediate Cord Clamping (ICC) | Experimental | Umbilical cord clamped within 30 seconds after birth. |
|
| Delayed Cord Clamping (DCC) | Experimental | Umbilical cord clamped 60 seconds after birth. |
|
| Umbilical Cord Milking (UCM) | Experimental | Umbilical cord milked toward the infant before clamping. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Immediate Cord Clamping | Procedure | Clamping of the umbilical cord within 30 seconds after delivery. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Neonatal Hemoglobin Level | Comparison of neonatal hemoglobin levels among immediate cord clamping, delayed cord clamping, and umbilical cord milking groups. | Within first 24 hours after birth |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Meryem Ceyhan, Dr. | Department of Gynecology and Obstetrics, Lokman Hekim University, Faculty of Medicine, | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Department of Gynecology and Obstetrics, Lokman Hekim University, Faculty of Medicine, | Ankara | Turkey (Türkiye) |
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| ID | Term |
|---|---|
| D047928 | Premature Birth |
| ID | Term |
|---|---|
| D007752 | Obstetric Labor, Premature |
| D007744 | Obstetric Labor Complications |
| D011248 | Pregnancy Complications |
| D005261 | Female Urogenital Diseases and Pregnancy Complications |
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| ID | Term |
|---|---|
| D000087526 | Umbilical Cord Clamping |
| ID | Term |
|---|---|
| D036861 | Delivery, Obstetric |
| D013513 | Obstetric Surgical Procedures |
| D013514 | Surgical Procedures, Operative |
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Participants were randomly assigned to three parallel groups based on umbilical cord management method.
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Outcome assessors were blinded to group allocation.
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| Delayed Cord Clamping | Procedure | Clamping of the umbilical cord 60 seconds after delivery. |
|
| Umbilical Cord Milking | Procedure | Milking of a 20 cm segment of the umbilical cord toward the infant before clamping. |
|
| D000091642 | Urogenital Diseases |