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Delayed umbilical cord clamping (DCC), usually 1-3 minutes, is reported to be beneficial for term and preterm infants. Nevertheless, there are reasons that urge us to reevaluate the effect of DCC. First, most prior studies were conducted on American and European women. The benefits of DCC in the infants born to Asian women is not clear. Second, neonates born to Asian mothers usually have lower birth weights and placental weights compared to the neonates and placentas of American and European women. The optimal duration of DCC in Asian women remains undetermined. The objective of this study is to determine the association between the blood volume collected and the interval from delivery to cord clamping and number of umbilical cord milking in women with normal term pregnancies with vaginal delivery or elective cesarean delivery (CS). Results form this study will help us determine the optimal duration of DCC or numbers of cord milking in our population in the following studies.
Delayed umbilical cord clamping (DCC), usually 1-3 minutes, is reported to be beneficial for term and preterm infants. In term infants, DCC increases hemoglobin levels at birth and improves iron stores in the first several months of life, which may have a favorable effect on development outcomes. In preterm infants, the benefits of DCC include improved transitional circulation, better establishment of red blood cell volume, decreased need for blood transfusion, and lower incidence of necrotizing enterocolitis and intraventricular hemorrhage. DCC was not associated with increased risk of postpartum hemorrhage or increased blood loss at delivery, nor was it associated with the need for blood transfusion. Three is a small increase in the incidence of jaundice that requires phototherapy in infants undergoing DCC. Given the benefits of most newborns, a number of professional organizations recommends DCC in term and preterm infants, when feasible.
There are reasons that urge us to reevaluate the effect of DCC in our population. First, most prior studies were conducted on American and European women. The benefits of DCC in the infants born to Asian women is not clear. Second, neonates born to Asian mothers usually have lower birth weights and placental weights compared to the neonates and placentas of American and European women. The optimal duration of DCC in Asian women remains undetermined. With the aforementioned reasons, the investigators will conduct a study to clarify the effects of DCC and umbilical cord milking on maternal and neonatal outcomes in Taiwanese women. Our objective is to determine the association between the blood volume collected and the interval from delivery to cord clamping and number of umbilical cord milking in women with normal term pregnancies with vaginal delivery or elective cesarean delivery (CS);.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| vaginal delivery with cord blood spontaneous drainage | Experimental | In women allocated to groups of cord blood spontaneous drainage, two clamps will placed at 4 finger breadths from the infant's abdomen and cut between two clamps immediately after delivery of the baby. The clamp on the placental site will be removed and the drainage time and amount of cord blood to a measuring glass will be recorded. |
|
| vaginal delivery with cord milking | Experimental | In women allocated to groups of cord milking group, two clamps will placed at 4 finger breadths from the newborn's abdomen and cut between two clamps immediately after delivery of the baby. The newborns will be taken care by the nurse. The clamp on the placental site will be removed, then the umbilical cord will be squeezed several times, 5 seconds between each squeezing, to collect cord blood in a measuring glass. The number of cord milking and the volume of blood collected will be recorded. |
|
| CS with cord blood spontaneous drainage | Experimental | In women allocated to groups of cord blood spontaneous drainage, two clamps will placed at 4 finger breadths from the infant's abdomen and cut between two clamps immediately after delivery of the baby. The clamp on the placental site will be removed and the drainage time and amount of cord blood to a measuring glass will be recorded. |
|
| CS with cord milking | Experimental |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| cord blood spontaneous drainage | Procedure | In women allocated to groups of cord blood spontaneous drainage, two clamps will placed at 4 finger breadths from the infant's abdomen and cut between two clamps after delivery of the baby. The clamp on the placental site will be removed and the drainage time and amount of cord blood to a measuring glass will be recored. |
| Measure | Description | Time Frame |
|---|---|---|
| Blood volume | Total cord blood volume collected with spontaneous drainage or cord milking | delivery of the baby |
| Measure | Description | Time Frame |
|---|---|---|
| Hemoglobin difference | The difference of maternal hemoglobin level before and after delivery | Change from admission for delivery to the next day after delivery |
| Hematocrit difference | The difference of maternal hematocrit level before and after delivery |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Tai-Ho Hung, MD, PhD | Chang Gung Memorial Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Taipei Chang Gung Memorial Hospital | Taipei | 10507 | Taiwan |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 17516307 | Background | Kugelman A, Borenstein-Levin L, Riskin A, Chistyakov I, Ohel G, Gonen R, Bader D. Immediate versus delayed umbilical cord clamping in premature neonates born < 35 weeks: a prospective, randomized, controlled study. Am J Perinatol. 2007 May;24(5):307-15. doi: 10.1055/s-2007-981434. Epub 2007 May 21. | |
| 22578578 | Background |
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The investigators will recruit 80 women normal term pregnancy; 40 with vaginal delivery and 40 with elective CS for previous CS or fetal malpresentation.
Participants will be randomized into 4 groups: group 1, vaginal delivery with cord blood spontaneous drainage; group 2, vaginal delivery with cord milking; group 3, CS with cord blood spontaneous drainage; group 4, CS with cord milking. In women allocated to groups of cord blood spontaneous drainage, two clamps will placed at 4 finger breadths from the infant's abdomen and cut between two clamps. The newborns will be taken care by the nurse after delivery. The clamp on the placenta site will be removed and record the drainage time and amount of cord blood to a measuring glass. In women allocated to groups of cord milking group, the umbilical cord will be squeezed several times, 5 seconds between each squeezing, to collect cord blood after delivery. The number of cord milking and the volume of blood collected will be recorded.
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In women allocated to groups of cord milking group, two clamps will placed at 4 finger breadths from the newborn's abdomen and cut between two clamps immediately after delivery of the baby. The newborns will be taken care by the nurse. The clamp on the placental site will be removed, then the umbilical cord will be squeezed several times, 5 seconds between each squeezing, to collect cord blood in a measuring glass. The number of cord milking and the volume of blood collected will be recorded.
|
|
| Umbilical cord miking | Procedure | In women allocated to groups of cord milking group, two clamps will placed at 4 finger breadths from the newborn's abdomen and cut between two clamps immediately after delivery of the baby. The clamp on the placental site will be removed, then the umbilical cord will be squeezed several times, 5 seconds between each squeezing, to collect cord blood in a measuring glass. The number of cord milking and the volume of blood collected will be recorded. |
|
| Change from admission for delivery to the next day after delivery |
| Takami T, Suganami Y, Sunohara D, Kondo A, Mizukaki N, Fujioka T, Hoshika A, Akutagawa O, Isaka K. Umbilical cord milking stabilizes cerebral oxygenation and perfusion in infants born before 29 weeks of gestation. J Pediatr. 2012 Oct;161(4):742-7. doi: 10.1016/j.jpeds.2012.03.053. Epub 2012 May 12. |
| 15495045 | Background | Rabe H, Reynolds G, Diaz-Rossello J. Early versus delayed umbilical cord clamping in preterm infants. Cochrane Database Syst Rev. 2004 Oct 18;(4):CD003248. doi: 10.1002/14651858.CD003248.pub2. |
| 23843134 | Background | 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. |
| 29097178 | Background | Fogarty M, Osborn DA, Askie L, Seidler AL, Hunter K, Lui K, Simes J, Tarnow-Mordi W. Delayed vs early umbilical cord clamping for preterm infants: a systematic review and meta-analysis. Am J Obstet Gynecol. 2018 Jan;218(1):1-18. doi: 10.1016/j.ajog.2017.10.231. Epub 2017 Oct 30. |
| 29081267 | Background | Tarnow-Mordi W, Morris J, Kirby A, Robledo K, Askie L, Brown R, Evans N, Finlayson S, Fogarty M, Gebski V, Ghadge A, Hague W, Isaacs D, Jeffery M, Keech A, Kluckow M, Popat H, Sebastian L, Aagaard K, Belfort M, Pammi M, Abdel-Latif M, Reynolds G, Ariff S, Sheikh L, Chen Y, Colditz P, Liley H, Pritchard M, de Luca D, de Waal K, Forder P, Duley L, El-Naggar W, Gill A, Newnham J, Simmer K, Groom K, Weston P, Gullam J, Patel H, Koh G, Lui K, Marlow N, Morris S, Sehgal A, Wallace E, Soll R, Young L, Sweet D, Walker S, Watkins A, Wright I, Osborn D, Simes J; Australian Placental Transfusion Study Collaborative Group. Delayed versus Immediate Cord Clamping in Preterm Infants. N Engl J Med. 2017 Dec 21;377(25):2445-2455. doi: 10.1056/NEJMoa1711281. Epub 2017 Oct 29. |
| 22825092 | Background | Kaempf JW, Tomlinson MW, Kaempf AJ, Wu Y, Wang L, Tipping N, Grunkemeier G. Delayed umbilical cord clamping in premature neonates. Obstet Gynecol. 2012 Aug;120(2 Pt 1):325-30. doi: 10.1097/AOG.0b013e31825f269f. |
| 28002310 | Background | Committee Opinion No. 684: Delayed Umbilical Cord Clamping After Birth. Obstet Gynecol. 2017 Jan;129(1):1. doi: 10.1097/AOG.0000000000001860. |
| 7873949 | Background | Perry IJ, Beevers DG, Whincup PH, Bareford D. Predictors of ratio of placental weight to fetal weight in multiethnic community. BMJ. 1995 Feb 18;310(6977):436-9. doi: 10.1136/bmj.310.6977.436. |
| 12592263 | Background | Jones J, Stevens CE, Rubinstein P, Robertazzi RR, Kerr A, Cabbad MF. Obstetric predictors of placental/umbilical cord blood volume for transplantation. Am J Obstet Gynecol. 2003 Feb;188(2):503-9. doi: 10.1067/mob.2003.19. |
| ID | Term |
|---|---|
| D005330 | Fetofetal Transfusion |
| ID | Term |
|---|---|
| D000751 | Anemia, Neonatal |
| D000740 | Anemia |
| D006402 | Hematologic Diseases |
| D006425 | Hemic and Lymphatic Diseases |
| D007232 | Infant, Newborn, Diseases |
| D009358 | Congenital, Hereditary, and Neonatal Diseases and Abnormalities |
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