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Transesophageal echocardiographic acquisition of mitral annulus motion during monitoring of left ventricular function in anesthetized patients
KTH, School of Technology and Health (STH), Medical Engineering.
2006 (English)In: Journal of the American Society of Echocardiography, ISSN 0894-7317, E-ISSN 1097-6795, Vol. 19, no 5, 499-506 p.Article in journal (Refereed) Published
Abstract [en]

Objective. We investigated the feasibility and reproducibility of transesophageal (TE) recordings of displacements and velocities of 4 sites of the mitral annulus in anesthetized patients. Correlations to transthoracic measures and influence of the respiratory cycle were also investigated. Methods: A total of 24 patients without heart disease were included. Another 10 patients were enrolled for the reproducibility study. Systolic and diastolic velocities and amplitude of motion were extracted from color-coded Doppler tissue recordings. Results: The reproducibility was not acceptable for the anterior site or for late diastolic velocities. Transthoracic values were higher than TE values. A somewhat higher displacement during inspiration in spontaneous respiration and during expiration in positive pressure ventilation was seen. Conclusions: The anterior site should be omitted when TE recordings of the mitral annulus are used. TE values are about 15% lower than transthoracic values. There is no need to take the respiratory cycle into account.

Place, publisher, year, edition, pages
2006. Vol. 19, no 5, 499-506 p.
Keyword [en]
atrioventricular plane displacement, acute myocardial-infarction, diastolic function, tissue doppler, systolic function, heart-failure, m-mode, velocity, respiration, contraction
URN: urn:nbn:se:kth:diva-15669DOI: 10.1016/j.echo.2005.12.002ISI: 000237488600005ScopusID: 2-s2.0-33744745883OAI: diva2:333711
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2010-10-04Bibliographically approved

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Brodin, Lars-Åke
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