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Updated: Aug 7, 2026
Echocardiographic Assessment of Cardiac Anatomy and Function in Adult Rats
Published on: December 13, 2019
[Assessment of left ventricular global contractility by a shift of mitral fibrous ring using tissue trace mode]
Aim:
To study a correlation between tissue trace shift (TTS) of mitral fibrous ring (MFR) in ventricular systole and left ventricular (LV) ejection fraction estimated by two-dimentional echocardiography (TDE).
Material And Methods:
A correlation between TTS of MFR and LV ejection fraction estimated by TDE was studied in 64 patients with LV systolic dysfunction of different severity. The shift was estimated with tissue trace which is a mode of tissue dopplerography.
Results:
The test for TTS was made in all the patients. Patients with LV global systolic dysfunction had a significantly less TTS of MFR. The maximal diagnostic value was detected for the 8 mm shift. This value allowed detection of the LV global contractility loss under 40% with 91% sensitivity and 96% specificity.
Conclusion:
Tissue trace of MFR in ventricular systole not only reveals disorders in LV global contractility but also estimates the severity of these disorders.
