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Changes in pulmonary oxygen content are detectable with laser absorption spectroscopy: proof of concept in newborn piglets

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Svanberg, Emilie Krite ; Larsson, Jim ; Rasmussen, Martin ; Larsson, Marcus ; Leander, Dennis ; Bergsten, Sara ; Bood, Joakim ; Greisen, Gorm ; Fellman, Vineta. / Changes in pulmonary oxygen content are detectable with laser absorption spectroscopy : proof of concept in newborn piglets. I: Pediatric Research. 2021 ; Bind 89, Nr. 4. s. 823-829.

Bibtex

@article{aba1982516d4476fb3f070a2f47a4052,
title = "Changes in pulmonary oxygen content are detectable with laser absorption spectroscopy: proof of concept in newborn piglets",
abstract = "BACKGROUND: Using an optical method based on tunable diode laser absorption spectroscopy, we previously assessed oxygen (O2) and water vapor (H2O) content in a tissue phantom of the preterm infant lung. Here we applied this method on newborn piglets with induced lung complications.METHODS: Five mechanically ventilated piglets were subjected to stepwise increased and decreased fraction of inspired oxygen (FiO2), to atelectasis using a balloon catheter in the right bronchus, and to pneumothorax by injecting air in the pleural cavity. Two diode lasers (764 nm for O2 gas absorption and 820 nm for H2O absorption) were combined in a probe delivering light either externally, on the skin, or internally, through the esophagus. The detector probe was placed dermally.RESULTS: Calculated O2 concentrations increased from 20% (IQR 17-23%) when ventilated with room air to 97% (88-108%) at FiO2 1.0. H2O was only detectable with the internal light source. Specific light absorption and transmission patterns were identified in response to atelectasis and pneumothorax, respectively.CONCLUSIONS: The optical method detected FiO2 variations and discriminated the two induced lung pathologies, providing a rationale for further development into a minimally invasive device for real-time monitoring gas changes in the lungs of sick newborn infants.IMPACT: Optical spectroscopy can detect pulmonary complications in an animal model. Oxygen concentrations can be evaluated in the lungs. Presents a novel minimally invasive method to detect lung oxygenation and complications. Potential to be developed into a lung monitoring method in newborn infants. Potential for bed-side detection of pulmonary complications in newborn infants.",
author = "Svanberg, {Emilie Krite} and Jim Larsson and Martin Rasmussen and Marcus Larsson and Dennis Leander and Sara Bergsten and Joakim Bood and Gorm Greisen and Vineta Fellman",
year = "2021",
month = mar,
doi = "10.1038/s41390-020-0971-x",
language = "English",
volume = "89",
pages = "823--829",
journal = "Pediatric Research",
issn = "0031-3998",
publisher = "Nature Publishing Group",
number = "4",

}

RIS

TY - JOUR

T1 - Changes in pulmonary oxygen content are detectable with laser absorption spectroscopy

T2 - proof of concept in newborn piglets

AU - Svanberg, Emilie Krite

AU - Larsson, Jim

AU - Rasmussen, Martin

AU - Larsson, Marcus

AU - Leander, Dennis

AU - Bergsten, Sara

AU - Bood, Joakim

AU - Greisen, Gorm

AU - Fellman, Vineta

PY - 2021/3

Y1 - 2021/3

N2 - BACKGROUND: Using an optical method based on tunable diode laser absorption spectroscopy, we previously assessed oxygen (O2) and water vapor (H2O) content in a tissue phantom of the preterm infant lung. Here we applied this method on newborn piglets with induced lung complications.METHODS: Five mechanically ventilated piglets were subjected to stepwise increased and decreased fraction of inspired oxygen (FiO2), to atelectasis using a balloon catheter in the right bronchus, and to pneumothorax by injecting air in the pleural cavity. Two diode lasers (764 nm for O2 gas absorption and 820 nm for H2O absorption) were combined in a probe delivering light either externally, on the skin, or internally, through the esophagus. The detector probe was placed dermally.RESULTS: Calculated O2 concentrations increased from 20% (IQR 17-23%) when ventilated with room air to 97% (88-108%) at FiO2 1.0. H2O was only detectable with the internal light source. Specific light absorption and transmission patterns were identified in response to atelectasis and pneumothorax, respectively.CONCLUSIONS: The optical method detected FiO2 variations and discriminated the two induced lung pathologies, providing a rationale for further development into a minimally invasive device for real-time monitoring gas changes in the lungs of sick newborn infants.IMPACT: Optical spectroscopy can detect pulmonary complications in an animal model. Oxygen concentrations can be evaluated in the lungs. Presents a novel minimally invasive method to detect lung oxygenation and complications. Potential to be developed into a lung monitoring method in newborn infants. Potential for bed-side detection of pulmonary complications in newborn infants.

AB - BACKGROUND: Using an optical method based on tunable diode laser absorption spectroscopy, we previously assessed oxygen (O2) and water vapor (H2O) content in a tissue phantom of the preterm infant lung. Here we applied this method on newborn piglets with induced lung complications.METHODS: Five mechanically ventilated piglets were subjected to stepwise increased and decreased fraction of inspired oxygen (FiO2), to atelectasis using a balloon catheter in the right bronchus, and to pneumothorax by injecting air in the pleural cavity. Two diode lasers (764 nm for O2 gas absorption and 820 nm for H2O absorption) were combined in a probe delivering light either externally, on the skin, or internally, through the esophagus. The detector probe was placed dermally.RESULTS: Calculated O2 concentrations increased from 20% (IQR 17-23%) when ventilated with room air to 97% (88-108%) at FiO2 1.0. H2O was only detectable with the internal light source. Specific light absorption and transmission patterns were identified in response to atelectasis and pneumothorax, respectively.CONCLUSIONS: The optical method detected FiO2 variations and discriminated the two induced lung pathologies, providing a rationale for further development into a minimally invasive device for real-time monitoring gas changes in the lungs of sick newborn infants.IMPACT: Optical spectroscopy can detect pulmonary complications in an animal model. Oxygen concentrations can be evaluated in the lungs. Presents a novel minimally invasive method to detect lung oxygenation and complications. Potential to be developed into a lung monitoring method in newborn infants. Potential for bed-side detection of pulmonary complications in newborn infants.

U2 - 10.1038/s41390-020-0971-x

DO - 10.1038/s41390-020-0971-x

M3 - Journal article

C2 - 32534453

VL - 89

SP - 823

EP - 829

JO - Pediatric Research

JF - Pediatric Research

SN - 0031-3998

IS - 4

ER -

ID: 62414361