| Evaluation of transesophageal Doppler detection of air embolism in dogs. | |
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MedLine Citation:
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PMID: 6824166 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The authors assessed the use of a cylindrical sensor which transceives (transmits and receives) ultrasound in a 360 degree arc mounted on a standard esophageal stethoscope catheter to detect air embolism in dogs. They used electronic circuitry developed specifically to provide a continuous analog recording of high frequency Doppler energy as well as an audible signal. They found that the esophageal Doppler sensor was easy to position. In 25 of 30 dogs, the system distinguished Doppler sounds of venous air emboli that were present either in the superior vena cava, right atrium, right ventricle, or pulmonary artery from normal cardiovascular sounds. In the remaining five animals, Doppler heart and air emboli sounds were initially of poor quality, but improved with aspiration of air from the esophagus. In another five dogs, arterial air emboli produced by left ventricular injections also were detected. The esophageal sensor was sensitive to both venous and arterial air emboli ranging from 0.05--0.2 ml of air, and the authors consistently detected repeated intravenous injections of air throughout a 5-h time period. Optimal position of the sensor for detection of venous air emboli was at the level of the superior vena cava above its junction with the right atrium. Optimal position to detect arterial air emboli introduced via a left ventricular catheter was at the level of the aortic arch. Tissue analysis of the esophagus revealed no morphologic damage due to the sensor or transmitted energy. |
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Authors:
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R W Martin; P S Colley |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Anesthesiology Volume: 58 ISSN: 0003-3022 ISO Abbreviation: Anesthesiology Publication Date: 1983 Feb |
Date Detail:
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Created Date: 1983-03-11 Completed Date: 1983-03-11 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 1300217 Medline TA: Anesthesiology Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 117-23 Citation Subset: AIM; IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Auscultation / instrumentation Dogs Embolism, Air / diagnosis* Esophagus Heart Atria Heart Sounds Heart Ventricles Pulmonary Artery Ultrasonics / instrumentation Ultrasonography* Vena Cava, Superior |
| Grant Support | |
ID/Acronym/Agency:
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GM26187/GM/NIGMS NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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