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Tissue oxygenation measured with near-infrared spectroscopy during normobaric and hyperbaric oxygen breathing in healthy subjects.
- Source :
-
European Journal of Applied Physiology . Jul2010, Vol. 109 Issue 4, p757-761. 5p. 1 Chart, 3 Graphs. - Publication Year :
- 2010
-
Abstract
- To evaluate the possibility of using near-infrared spectroscopy (NIRS) to measure tissue oxygenation (StO(2)) during hyperbaric oxygen (HBO) therapy. Nine healthy volunteers (1 female) age 25-37 years, breathed air or oxygen. Tissue oxygenation was measured using NIRS on the thumb. Subjects were blinded to breathing gas. A range of partial pressures of oxygen were administered in 10-min intervals: 21, 101, 21 kPa (compression to 280 kPa), 59, 280, 59 (decompression), 21 kPa. Data were averaged over last 5 min at each pressure. When switching from air to normobaric oxygen (NBO 101 kPa) StO(2) increased from 83% (82-85%, median and interquartile range) to 85% (84-87%) (P < 0.01), while when switching from air at pressure (59 kPa O(2)) to HBO (280 kPa), StO(2) increased from 85% (85-86%) to 88% (87-89%) (P < 0.001). There was no difference between baseline StO(2) while air breathing before NBO or after decompression. Values did not reach the maximal value of 100% at any point. The changes in hemoglobin oxygen saturation in tissue registered by the NIRS monitor when switching from air to oxygen followed inspired PO(2) under normobaric and hyperbaric conditions. [ABSTRACT FROM AUTHOR]
- Subjects :
- *HYPERBARIC oxygenation
*TISSUES
*SPECTRUM analysis
*HEMOGLOBINS
*RESPIRATION
*OXYGEN
*NEAR infrared spectroscopy
*OXYGEN metabolism
*BLOOD pressure
*COMPARATIVE studies
*HEART beat
*RESEARCH methodology
*MEDICAL cooperation
*RESEARCH
*THUMB
*TIME
*EVALUATION research
*OXYGEN consumption
*INHALATION administration
*PARTIAL pressure
*EQUIPMENT & supplies
Subjects
Details
- Language :
- English
- ISSN :
- 14396319
- Volume :
- 109
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- European Journal of Applied Physiology
- Publication Type :
- Academic Journal
- Accession number :
- 51375150
- Full Text :
- https://doi.org/10.1007/s00421-010-1403-0