- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00665769
Physiological Disturbances Associated With Neonatal Intraventricular Hemorrhage (PhysDis)
Annually, almost 5,000 extremely low birth weight (9 ounces to about 2 lbs) infants born in the US survive with severe bleeding in the brain (intraventricular hemorrhage); this devastating complication of prematurity is associated with many problems, including mental retardation, cerebral palsy, and learning disabilities, that result in profound individual and familial consequences. In addition, lifetime care costs for these severely affected infants born in a single year exceed $3 billion. The huge individual and societal costs underscore the need for developing care strategies that may limit severe bleeding in the brain of these tiny infants. The overall goal of our research is to evaluate disturbances of brain blood flow in these tiny infants in order to predict which of them are at highest risk and to develop better intensive care techniques that will limit severe brain injury.
- Since most of these infants require ventilators (respirators) to survive, we will investigate how 2 different methods of ventilation affect brain injury. We believe that a new method of ventilation, allowing normal carbon dioxide levels, will normalize brain blood flow and lead to less bleeding in the brain.
- We will also examine how treatment for low blood pressure in these infants may be associated with brain injury. We believe that most very premature infants with low blood pressure actually do worse if they are treated. We think that by allowing the infants to normalize blood pressure on their own will allow them to stabilize blood flow to the brain leading to less intraventricular hemorrhage.
- In 10 premature infants with severe brain bleeding, we have developed a simple technique to identify intraventricular hemorrhage before it happens. Apparently, the heart rate of infants who eventually develop severe intraventricular hemorrhage is less variable than infants who do not develop this. We plan to test this method in a large group of infants, to be able to predict which infants are at highest risk of developing intraventricular hemorrhage and who could most benefit from interventions that would reduce disturbances of brain blood flow.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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Texas
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Houston, Texas, United States, 77030
- Texas Children's Hospital
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- ventilated ELBW (401-1000 grams) infants
- 23 to 30 weeks' gestation
- umbilical arterial catheter placed during newborn resuscitation
Exclusion Criteria:
- presence of complex congenital anomalies or chromosomal abnormality
- presence of central nervous system malformation
- infants with hydrops fetalis
- infants in extremis
- infants with early (<3 hour of age) intraventricular hemorrhage
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Placebo Comparator: Hypercapnia
Hypercapnic ventilation.
The goal will be to maintain transcutaneous CO2 55 mm Hg (50-60 mm Hg) during the first week of life, or until extubation.
A written, laminated hypercapnic ventilator algorithm will be placed at the bedside.
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transcutaenous CO2 50-60 mm Hg
Other Names:
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Active Comparator: Normocapnia
Normocapnic ventilation.
The goal will be to maintain transcutaenous CO2 40 mm Hg (35-45 mm Hg) during the first week of life, or until extubation.
A written, laminated normocapnic ventilator algorithm will be placed at the bedside.
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transcutaneous CO2 35-45 mm Hg
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
The effect of hypercapnia vs. normocapnia on the development of Grade II-IV intraventricular hemorrhage/periventricular leukomalacia (severe brain injury) and/or death
Time Frame: During first 2 weeks of life (intraventricular hemorrhage and/or death), initial hospitalization for periventricular leukomalacia
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During first 2 weeks of life (intraventricular hemorrhage and/or death), initial hospitalization for periventricular leukomalacia
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Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
The effect of hypercapnia vs. normocapnia on the development of chronic lung disease (requirement of supplemental oxygen at 36 weeks corrected gestational age)
Time Frame: By 36 weeks corrected gestational age.
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By 36 weeks corrected gestational age.
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The effect of hypercapnia vs. normocapnia on abnormal results from MRIs
Time Frame: at term-equivalent age
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at term-equivalent age
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The effect of hypercapnia vs. normocapnia on the development of pulmonary hemorrhage
Time Frame: During the initial hospitalization
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During the initial hospitalization
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Jeffrey R. Kaiser, MD, MA, Baylor College of Medicine
Publications and helpful links
General Publications
- Fanaroff JM, Wilson-Costello DE, Newman NS, Montpetite MM, Fanaroff AA. Treated hypotension is associated with neonatal morbidity and hearing loss in extremely low birth weight infants. Pediatrics. 2006 Apr;117(4):1131-5. doi: 10.1542/peds.2005-1230.
- Hall RW, Kaiser JR. Hypotension and brain injury in premature infants. Pediatrics. 2008 Mar;121(3):654; author reply 654-5. doi: 10.1542/peds.2007-3602. No abstract available.
- Kaiser JR, Gauss CH, Williams DK. Tracheal suctioning is associated with prolonged disturbances of cerebral hemodynamics in very low birth weight infants. J Perinatol. 2008 Jan;28(1):34-41. doi: 10.1038/sj.jp.7211848. Epub 2007 Oct 25.
- Kaiser JR. Both extremes of arterial carbon dioxide pressure and the magnitude of fluctuations in arterial carbon dioxide pressure are associated with severe intraventricular hemorrhage in preterm infants. Pediatrics. 2007 May;119(5):1039; author reply 1039-40. doi: 10.1542/peds.2007-0353. No abstract available.
- Kaiser JR, Gauss CH, Pont MM, Williams DK. Hypercapnia during the first 3 days of life is associated with severe intraventricular hemorrhage in very low birth weight infants. J Perinatol. 2006 May;26(5):279-85. doi: 10.1038/sj.jp.7211492.
- Kaiser JR, Gauss CH, Williams DK. The effects of hypercapnia on cerebral autoregulation in ventilated very low birth weight infants. Pediatr Res. 2005 Nov;58(5):931-5. doi: 10.1203/01.pdr.0000182180.80645.0c.
- Kaiser JR, Gauss CH, Williams DK. Surfactant administration acutely affects cerebral and systemic hemodynamics and gas exchange in very-low-birth-weight infants. J Pediatr. 2004 Jun;144(6):809-14. doi: 10.1016/j.jpeds.2004.03.022.
- Tuzcu V, Nas S, Borklu T, Ugur A. Decrease in the heart rate complexity prior to the onset of atrial fibrillation. Europace. 2006 Jun;8(6):398-402. doi: 10.1093/europace/eul031. Epub 2006 May 10.
- Rushing S, Ment LR. Preterm birth: a cost benefit analysis. Semin Perinatol. 2004 Dec;28(6):444-50. doi: 10.1053/j.semperi.2004.10.007.
- van Bel F, de Winter PJ, Wijnands HB, van de Bor M, Egberts J. Cerebral and aortic blood flow velocity patterns in preterm infants receiving prophylactic surfactant treatment. Acta Paediatr. 1992 Jun-Jul;81(6-7):504-10. doi: 10.1111/j.1651-2227.1992.tb12283.x.
- van de Bor M, Walther FJ. Cerebral blood flow velocity regulation in preterm infants. Biol Neonate. 1991;59(6):329-35. doi: 10.1159/000243368.
- Lou HC, Lassen NA, Friis-Hansen B. Impaired autoregulation of cerebral blood flow in the distressed newborn infant. J Pediatr. 1979 Jan;94(1):118-21. doi: 10.1016/s0022-3476(79)80373-x.
- Fabres J, Carlo WA, Phillips V, Howard G, Ambalavanan N. Both extremes of arterial carbon dioxide pressure and the magnitude of fluctuations in arterial carbon dioxide pressure are associated with severe intraventricular hemorrhage in preterm infants. Pediatrics. 2007 Feb;119(2):299-305. doi: 10.1542/peds.2006-2434.
- van Ravenswaaij-Arts CM, Hopman JC, Kollee LA, van Amen JP, Stoelinga GB, van Geijn HP. The influence of respiratory distress syndrome on heart rate variability in very preterm infants. Early Hum Dev. 1991 Dec;27(3):207-21. doi: 10.1016/0378-3782(91)90195-9.
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- H-31475
- 1R01NS060674 (U.S. NIH Grant/Contract)
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