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Clinical Trial Summary

This is a prospective observational pilot study investigating if peripheral fractional tissue oxygen extraction (pFTOE) measured by five short near-infrared spectroscopy (NIRS) (re-)applications within the first 6 hours after birth in neonates with respiratory distress differs in neonates with early onset infection and neonate without infection


Clinical Trial Description

Background Near-infrared spectroscopy (NIRS) enables non-invasive, continuous monitoring of oxygenation and perfusion in different tissues. In several studies NIRS has been described to have the potential to detect centralisation due to perfusion heterogeneity, arterio-venous shunting and impaired autoregulation. Thus, peripheral muscle NIRS measurement has the potential to provide information at early stages of inflammation also due to infection, due to microvascular dysfunction, when other routine vital parameters are still within normal ranges. Objectives Primary aim To assess, if pFTOE measured by five short NIRS (re-)applications within the first 6 hours after birth differs in neonates with early onset infection and neonates without infection. Secondary aims To assess, if cerebral fractional tissue oxygen extraction (cFTOE) and cFTOE/pFTOE measured by five short NIRS (re-)applications within the first 6 hours after birth differs in neonates with early onset infection and neonates without infection. To assess, if there is a difference in pFTOE, cFTOE and cFTOE/pFTOE between term and preterm neonates. Methods Study population: Term and preterm neonates ≥30+0 weeks of gestation with respiratory distress and risk factors for infection admitted to the neonatal intensive care unit (NICU) on the first day after vaginal delivery or caesarean section on the first day after birth will be eligible for this study. Inclusion criteria are signs of respiratory distress at time-point of inclusion, age <6h and decision to conduct full life support. There will be four groups consisted with term(1) and preterm(2) neonates with early onset infection and term(3) and preterm(4) neonates without. Procedure: Patients and maternal medical history, routinely sampled laboratory results and blood culture will be documented in each neonate. Measurement: The NIRS-measurement will take place once within 6 hours after birth. For NIRS measurements the NIRO 200NX will be used and the NIRS sensors will be applied by hand on the right forearm (pTOI) and on the left forehead (cTOI) until stable signals are obtained for approximately 30 seconds, respectively. Then the sensors will be removed for 10sec rest period. After that the sensors will be reapplied in approximately the same positions. This procedure will be repeated five times. Level of originality As many term and preterm neonates are admitted to the NICU after birth due to respiratory distress, there is growing interest in methods enabling to recognize subtle early signs like micro-vascular dysfunction due to infection. In the present study the investigators want to evaluate in neonates with respiratory distress if peripheral muscle and cerebral FTOE measured by short reapplications with NIRS in the first hours after birth enables to recognize early microvascular dysfunction and compromised oxygenation due to infections. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04818762
Study type Observational
Source Medical University of Graz
Contact Gerhard Pichler, Prof., MD
Phone 0043 316 385 80520
Email gerhard.pichler@medunigraz.at
Status Recruiting
Phase
Start date February 26, 2021
Completion date February 1, 2025

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