Journal article
Recommendations for hyperbaric oxygen therapy of cerebral air embolism based on a mathematical model of bubble absorption
Anesthesia and analgesia, Vol.84(6), pp.1203-1207
06/1997
DOI: 10.1097/00000539-199706000-00006
PMID: 9174293
Abstract
Transcranial doppler studies show that microscopic cerebral artery air emboli (CAAE) are present in virtually all patients undergoing cardiac surgery. Massive cerebral arterial air embolism is rare. If it occurs, hyperbaric oxygen therapy (HBO) is recommended as soon as surgery is completed. We used a mathematical model to predict the absorption time of CAAE, assuming that the volumes of clinically relevant CAAE vary from 10(-7) to at least 10(-1) mL. Absorption times are predicted to be at least 40 h during oxygenation using breathing gas mixtures of fraction of inspired oxygen approximately equal to 40%. When CAAE are large enough to be detected by computerized tomography, absorption times are calculated to be at least 15 h. Decreases in cerebral blood flow caused by the CAAE would make the absorption even slower. Our analysis suggests that if the diagnosis of massive CAAE is suspected, computerized tomography should be performed, and consideration should be given to HBO therapy if the CAAE are large enough to be visualized, even if patient transfer to a HBO facility will require several hours.
Details
- Title: Subtitle
- Recommendations for hyperbaric oxygen therapy of cerebral air embolism based on a mathematical model of bubble absorption
- Creators
- F Dexter - Department of Anesthesia, University of Iowa, Iowa City 52242, USA. franklin-dexter@uiowa.eduB J Hindman
- Resource Type
- Journal article
- Publication Details
- Anesthesia and analgesia, Vol.84(6), pp.1203-1207
- Publisher
- United States
- DOI
- 10.1097/00000539-199706000-00006
- PMID
- 9174293
- ISSN
- 0003-2999
- eISSN
- 1526-7598
- Language
- English
- Date published
- 06/1997
- Academic Unit
- Health Management and Policy; Anesthesia
- Record Identifier
- 9983806263402771
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