Prematurity
Conditions
Keywords
prematurity, umbilical cord milking, delayed cord clamping, neonatal transfusion
Brief summary
Delayed cord clamp of at least 30 seconds in neonates under 37 weeks has shown that these infants have higher circulating blood volume in the first 24 hours, less need for blood transfusions, and less incidence of intraventricular hemorrhage. Delayed umbilical cord clamping has also been shown to increase the initial hematocrit and decrease the need for red blood cell (RBC) transfusions compared with no intervention in infants born between 27 and 33 weeks' gestation. However, a delay in cord clamping of 30-45 seconds may theoretically interfere with neonatal resuscitation. There have been few studies that addressed the active milking of the cord and its effect on neonatal resuscitation. Active milking of the umbilical cord towards the baby prior to clamping (rather than passive) should take less than 5 seconds to perform and should not interfere with neonatal resuscitation. Umbilical cord milking, as an alternative to delayed cord clamping, has been shown to increase the circulatory blood volume expressed as the hemoglobin value. Active milking of the cord prior to clamping, however, is not considered standard of care and only 1 Japanese randomized control study has reported that umbilical cord milking reduces the need for RBC transfusions, thus reducing the number of infants requiring a RBC transfusion as compared with control conditions. Our study aims to test the hypothesis that active milking of the umbilical cord will reduce the need for transfusion in preterm infants.
Detailed description
The proposed design is a randomized controlled trial. Pregnant women at risk for delivering a singleton preterm infant between 24 and 28 weeks gestation will be randomized prior to delivery into one of two treatment arms. Common reasons for needing to be delivered at this early gestational age include but are not limited to: preterm labor not responding to tocolytic medications, incompetent cervix with cervical dilation and no contractions, clinical chorioamnionitis requiring delivery for maternal/fetal benefit, severe preeclampsia, severe growth restriction with a non-reassuring fetal heart rate tracing. The first arm will include active milking of the umbilical cord toward the neonate's umbilicus prior to cord clamping at delivery while the second arm will not include this intervention and will have their respective cord immediately clamped in the usual fashion post delivery (control).
Interventions
PROCEDUREUmbilical Cord Milking
Approximately 10 cm of umbilical cord was milked toward the baby immediately following delivery. (The blood remaining in the umbilical cord after delivery is squeezed in the direction from the placenta (remaining inside the uterus) toward the newborn baby.)
Sponsors
Eastern Virginia Medical School
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Singleton pregnancy * Delivery anticipated between 24 and 28+6 weeks gestation * There is enough time from admission to anticipated delivery to properly obtain consent from the patient
Exclusion criteria
* Multifetal gestation * Antenatally diagnosed major congenital anomaly * Known Rh sensitized pregnancy * Hydrops fetalis (any etiology) * Known positive maternal Parvovirus titers * Elevated peak systolic velocity of the fetal Middle Cerebral Artery (MCA) * Clinical suspicion of placental abruption at delivery due to excessive maternal bleeding or uterine hypertonicity * Maternal age under 18
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Red blood cell transfusion | 28 days | need for packed red blood cell transfusion in the first 28 days of neonatal life |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Intraventricular Hemorrhage | 28 days | diagnosis of IVH in first 28 days of neonatal life |
| Days until transfusion | 28 days | number of days until first RBC transfusion in first 28 days of life |
| Respiratory Distress Syndrome | 28 days | diagnosis of RDS in first 28 days of neonatal life |
| Retinopathy of Prematurity | 28 days | diagnosis of ROP in first 28 days of neonatal life |
| Chronic Lung Disease | 28 days | diagnosis of CLD in first 28 days of neonatal life |
| Sepsis | 28 days | diagnosis of sepsis in first 28 days of neonatal life |
| Necrotizing Enterocolitis | 28 days | diagnosis of nec in first 28 days of neonatal life |
| Apgar scores | 10 minutes | 1, 5, and 10 minute Apgars scores |
| cord PH | 1 hour | umbilical cord pH immediately after delivery |
| Volume of blood transfusion | 28 days | total volume of packed RBC's transfused in first 28 days of neonatal life |
| Initial Hemoglobin/Hematocrit | 1 day | Initial neonatal H/H |
| Initial blood pressure | 1 day | Initial neonatal blood pressure |
| Neonatal jaundice | 28 days | Need for bili lights to treat neonatal jaundice, maximum total bilirubin, number of days of bili lights |
| Neonatal death | 28 days | Incidence of neonatal death in the first 28 days of life, age of neonate at death |
| Length of admission | 28 days | Length of neonatal admission (up to 28 days) |
| Length of intubation | 28 days | Length of need for neonatal intubation in first 28 days of life |
| Periventricular Leukomalacia | 28 days | diagnosis of PVL in first 28 days of neonatal life |
| Hyperkalemia | 28 days | diagnosis of Hyperkalemia in first 28 days of neonatal life |
| Neonatal resuscitation | 1 hour | Neonatal Resuscitation measures immediately after birth, including intubation, surfactant administration, stimulation, compressions, epinephrine |
Countries
United States
Outcome results
None listed