| Transesophageal tissue Doppler echocardiography for evaluation of myocardial function during aortic valve replacement. | |
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MedLine Citation:
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PMID: 17544887 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: Tissue Doppler imaging is an evolving ultrasound technology that, compared with traditional echocardiography, promises reduced subjectivity in the assessment of myocardial performance and contributes new information on myocardial function. The aim of this study was to evaluate the feasibility of transesophageal tissue Doppler imaging in the setting of aortic valve replacement. DESIGN: Feasibility study. SETTING: Aarhus University Hospital, Denmark. PARTICIPANTS: Twelve patients with isolated aortic valve stenosis or combined ischemic cardiomyopathy and aortic valve stenosis scheduled for elective aortic valve replacement were included. INTERVENTION: Transgastric short-axis recordings of the left ventricular anterior wall were performed using Vivid-7 technology (GE Healthcare, Horten, Norway) with activated tissue Doppler imaging before sternotomy, at intervals during progressive withdrawal of cardiopulmonary bypass, and within 1 hour after transfer to the postoperative care unit. Data were postprocessed for assessment of systolic radial function with the tissue Doppler modalities, tissue velocity, end-systolic strain rate, and strain by using dedicated software. RESULTS: Accurate tissue Doppler data were obtained for all patients at baseline and postoperatively. During the gradual loading of the left ventricle, velocity measurements were all obtained accurately, whereas 8% to 25 % of strain and strain-rate measurements were considered unreliable. Immediately after cardioplegia, 33% to 58% of measurements were unreliable. CONCLUSIONS: Transesophageal tissue Doppler is feasible in the intraoperative setting, although unreliable data acquisition occurs during cardiopulmonary bypass. Tissue Doppler is a promising quantitative tool for monitoring of myocardial function within minutes and may also reveal new information on myocardial function in patients undergoing thoracic surgery. |
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Authors:
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Kathrine Norrild; Troels Fogh Pedersen; Erik Sloth |
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Publication Detail:
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Type: Journal Article Date: 2006-12-08 |
Journal Detail:
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Title: Journal of cardiothoracic and vascular anesthesia Volume: 21 ISSN: 1053-0770 ISO Abbreviation: J. Cardiothorac. Vasc. Anesth. Publication Date: 2007 Jun |
Date Detail:
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Created Date: 2007-06-04 Completed Date: 2007-08-09 Revised Date: 2008-12-18 |
Medline Journal Info:
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Nlm Unique ID: 9110208 Medline TA: J Cardiothorac Vasc Anesth Country: United States |
Other Details:
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Languages: eng Pagination: 367-70 Citation Subset: IM |
Affiliation:
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Department of Anaesthesiology, Skejby Hospital, Aarhus University, Copenhagen, Denmark. kathrinenorrild@dadlnet.dk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aortic Valve / surgery* Aortic Valve Stenosis / physiopathology, surgery*, ultrasonography Echocardiography, Doppler / methods* Echocardiography, Transesophageal / methods* Female Humans Male Middle Aged |
| Comments/Corrections | |
Comment In:
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J Cardiothorac Vasc Anesth. 2008 Aug;22(4):648-9
[PMID:
18662652
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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