Reference Interval for SPO2 in Neonates at High Altitudes During First 2 Hours and Umbilical Artery Blood Gas

NCT ID: NCT05468515

Last Updated: 2023-06-05

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

956 participants

Study Classification

OBSERVATIONAL

Study Start Date

2022-03-15

Study Completion Date

2023-02-27

Brief Summary

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Pulse oximetry offers real time and non-invasive estimation of arterial oxygen saturation in a cost-effective way, and has become a critical tool in guiding the usage of supplemental oxygen in sick newborns. During postnatal transition, pulmonary pressure decreases upon the activation of the lungs, and the ductus arteriosus constricts and closes upon the increase of partial oxygen pressure, which is negatively correlated with altitude. As a result, postnatal transition may be different at high altitudes. Umbilical cord blood gas analysis is now recommended in all high-risk deliveries because of its' value in providing information about preceding fetal hypoxic stress. But there are only limited studies about the SpO2 measurements during the first few hours after birth and umbilical blood gas analysis at high altitudes, especially at altitudes above 2500m. The primary outcome of the study is to determine the reference intervals for preductal oxygen saturation during first 2 hours of life stratified by different gestational age. The secondary outcomes is to establish the pH and lactate cutoff value of umbilical arterial blood gas at different altitude level.

Detailed Description

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Conditions

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Neonatal Disease Altitude Hypoxia

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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High altitude group

altitude level range from 2500 to 4500 meters

pulse oxygen saturation

Intervention Type DIAGNOSTIC_TEST

preductal oxygen saturation

mild altitude group

altitude level range from 500 to 2500 meters

pulse oxygen saturation

Intervention Type DIAGNOSTIC_TEST

preductal oxygen saturation

Interventions

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pulse oxygen saturation

preductal oxygen saturation

Intervention Type DIAGNOSTIC_TEST

Other Intervention Names

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umbilical blood gas analysis

Eligibility Criteria

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Inclusion Criteria

* Infants with a gestational age between 35 to 42 weeks who were born alive and appearing well as defined by:

1. normal vital signs (heart rate ranging from 110 to 180 beats/minute, respiratory rate ranging from 30 to 60 breaths/minute, temperature ranging from 36.5°C to 37.5°C),
2. absence of signs of illness such as respiratory distress.
3. the mothers resided in the study area.

Exclusion Criteria

* outborn, require resuscitative interventions at birth beyond blow-by oxygen,
* require admission for any reason other than observation or had a major congenital anomaly.
Minimum Eligible Age

0 Hours

Maximum Eligible Age

2 Hours

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Children's Hospital of Fudan University

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Children Hospital of Fudan University

Shanghai, , China

Site Status

Countries

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China

References

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Hu XJ, Ma XJ, Zhao QM, Yan WL, Ge XL, Jia B, Liu F, Wu L, Ye M, Liang XC, Zhang J, Gao Y, Zhai XW, Huang GY. Pulse Oximetry and Auscultation for Congenital Heart Disease Detection. Pediatrics. 2017 Oct;140(4):e20171154. doi: 10.1542/peds.2017-1154.

Reference Type BACKGROUND
PMID: 28939700 (View on PubMed)

Tekgunduz KS, Bilen M, Kara M, Laloglu F, Ceviz N. Oxygen saturation and perfusion index screening in neonates at high altitudes: can PDA be predicted? Eur J Pediatr. 2021 Jan;180(1):31-38. doi: 10.1007/s00431-020-03698-1. Epub 2020 Jun 5.

Reference Type BACKGROUND
PMID: 32504134 (View on PubMed)

Gonzales GF, Salirrosas A. Arterial oxygen saturation in healthy newborns delivered at term in Cerro de Pasco (4340 m) and Lima (150 m). Reprod Biol Endocrinol. 2005 Sep 12;3:46. doi: 10.1186/1477-7827-3-46.

Reference Type BACKGROUND
PMID: 16156890 (View on PubMed)

Zamudio S, Torricos T, Fik E, Oyala M, Echalar L, Pullockaran J, Tutino E, Martin B, Belliappa S, Balanza E, Illsley NP. Hypoglycemia and the origin of hypoxia-induced reduction in human fetal growth. PLoS One. 2010 Jan 1;5(1):e8551. doi: 10.1371/journal.pone.0008551.

Reference Type BACKGROUND
PMID: 20049329 (View on PubMed)

Toth B, Becker A, Seelbach-Gobel B. Oxygen saturation in healthy newborn infants immediately after birth measured by pulse oximetry. Arch Gynecol Obstet. 2002 Apr;266(2):105-7. doi: 10.1007/s00404-001-0272-5.

Reference Type BACKGROUND
PMID: 12049291 (View on PubMed)

Bakr AF, Habib HS. Normal values of pulse oximetry in newborns at high altitude. J Trop Pediatr. 2005 Jun;51(3):170-3. doi: 10.1093/tropej/fmi026. Epub 2005 Apr 26.

Reference Type BACKGROUND
PMID: 15855304 (View on PubMed)

Ogik V, Muyingo M, Musooko M, Nankunda J. Umbilical artery lactate levels and associated maternal and newborn characteristics at Mulago National Referral Hospital: a cross-sectional observational study. BMJ Open. 2021 Aug 26;11(8):e043827. doi: 10.1136/bmjopen-2020-043827.

Reference Type BACKGROUND
PMID: 34446476 (View on PubMed)

Bellera CA, Hanley JA. A method is presented to plan the required sample size when estimating regression-based reference limits. J Clin Epidemiol. 2007 Jun;60(6):610-5. doi: 10.1016/j.jclinepi.2006.09.004. Epub 2007 Jan 16.

Reference Type BACKGROUND
PMID: 17493520 (View on PubMed)

Other Identifiers

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2021-03-146-K01

Identifier Type: -

Identifier Source: org_study_id

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