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Oxygen Toxicity in the Resuscitation in Extremely Premature Infants (OXTOX)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00494702
Recruitment Status : Completed
First Posted : July 2, 2007
Last Update Posted : October 15, 2008
Instituto de Salud Carlos III
Information provided by:
Fundacion Para La Investigacion Hospital La Fe

Brief Summary:
The investigators hypothesize that using low oxygen concentrations during resuscitation of extremely premature infants will avoid oxidative stress derived damage and improve outcome.

Condition or disease Intervention/treatment Phase
Birth Asphyxia Premature Birth Procedure: Resuscitation Phase 3

Detailed Description:

This is a prospective randomized trial enrolling premature infants of less than 28 weeks gestation. Patients are randomly assigned to become resuscitation with an initial oxygen inspiratory fraction (FiO2) of 30% or 90%. Main objective is to reach a target saturation of 85% at 15 min of life.

Immediately after birth pre-and-postductal pulse oximeters are set and oxygen saturation (SpO2) continuously monitored and registered as long as the patient requires oxygen supplementation. FiO2 is stepwise adjusted (increased or decreased 10%) every 90 sec according to heart rate, SpO2 and responsiveness.

Blood samples are drawn from umbilical cord and at day 1, 2 and 7 from peripheral vein to determine oxidative stress markers (GSH, GSSG), angiogenic factors (VEGF, VEGF receptors, Angiopoietin), pro-inflammatory markers (IL8, TNF alfa) and pro-apoptotic markers (Fas Ligand; Cytochrome C).

Urine is collected every day during the first week of life to determine oxidative stress markers (8-oxo-dG; O-tyrosine; F2 isoprostanes; Isofurans).

Babies are followed in the NICU and clinical condition recorded. Serial examinations for ROP and Auditory evoked potentials will be performed. Neurodevelopmental outcome is evaluated at 2 years of postnatal life. Main outcome: Achievement of a target saturation of 85% at 15 min of life. Secondary outcomes: acute complications during delivery; chronic complications (BPD, ROP, IPVH); mortality in the neonatal period.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 88 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Investigator)
Primary Purpose: Treatment
Official Title: Achievement of a Targeted Saturation in Extremely Low Gestational Age Neonates Resuscitated With Low or High Oxygen Concentration: A Prospective Randomized Trial
Study Start Date : April 2005
Actual Primary Completion Date : March 2008
Actual Study Completion Date : September 2008

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Oxygen Therapy

Arm Intervention/treatment
Experimental: LOX
Low saturation group of premature infants that will be kept within preset limits of 85-89%
Procedure: Resuscitation
Use of inspiratory fraction of oxygen needed to achieve oxygen saturation in the preset limits 85-88%

Active Comparator: HOX
HOX group of premature infants will be kept within preset saturation limits of 90-93%
Procedure: Resuscitation
Oxygen inspiratory fraction needed to keep oxygen saturation in the preset limits of 90-93%

Primary Outcome Measures :
  1. Achievement of a targeted saturation of 85% at 15 min of life. [ Time Frame: 30 min ]

Secondary Outcome Measures :
  1. Neonatal mortality [ Time Frame: 28 days of life ]
  2. Oxidative stress [ Time Frame: at day 1, 2 and 7 ]
  3. Bronchopulmonary dysplasia [ Time Frame: 36 weeks postconceptional age ]
  4. Retinopathy of prematurity [ Time Frame: 40 weeks postconceptional ]
  5. Neurodevelopment [ Time Frame: 24 months postnatal ]

Information from the National Library of Medicine

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Ages Eligible for Study:   up to 3 Minutes   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Prematurity of less than 28 weeks gestation

Exclusion Criteria:

  • Severe malformations
  • Chromosomopathies
  • Informed consent not signed

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00494702

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Servicio de Neonatologia
Valencia, Spain, 46009
Sponsors and Collaborators
Fundacion Para La Investigacion Hospital La Fe
Instituto de Salud Carlos III
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Principal Investigator: Maximo Vento, Phd, Md Hospital Universitario La Fe

Publications automatically indexed to this study by Identifier (NCT Number):
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Other Study ID Numbers: PIO51O5
First Posted: July 2, 2007    Key Record Dates
Last Update Posted: October 15, 2008
Last Verified: October 2008
Keywords provided by Fundacion Para La Investigacion Hospital La Fe:
Oxidative stress
Follow up
Additional relevant MeSH terms:
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Premature Birth
Asphyxia Neonatorum
Obstetric Labor, Premature
Obstetric Labor Complications
Pregnancy Complications
Pathologic Processes
Wounds and Injuries
Infant, Newborn, Diseases