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Variability in the time interval between tricuspid and mitral valve closure in ebstein's anomaly
Author(s) -
Gussenhoven W. J.,
Jansen J. R. C.,
Bom N.,
Ligtvoet C. M.
Publication year - 1984
Publication title -
journal of clinical ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.272
H-Index - 61
eISSN - 1097-0096
pISSN - 0091-2751
DOI - 10.1002/jcu.1870120507
Subject(s) - medicine , tricuspid valve , mitral valve , cardiology , anomaly (physics) , closure (psychology) , interval (graph theory) , ebstein's anomaly , market economy , physics , mathematics , combinatorics , economics , condensed matter physics
The time interval between mitral and tricuspid valve closure was measured from M‐mode echocardiograms in patients with Ebstein's anomaly. It was found that this time interval demonstrated a range of values within each patient. In the present study we assessed the parameters which influenced the variability. The use of different transducer positions on the chest wall was found to be the predominant factor. There was no correlation between the measured time interval, its variability, and the moment of measurement during breathing. However, a period of breathholding significantly reduced the variability. This study indicates that a wide range of time intervals might be measured in a single patient. We conclude therefore, that this parameter should be used with great care in the diagnosis of Ebstein's anomaly.