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A New Parameter of Pulsed‐Wave Tissue Doppler Imaging: IVRa
Author(s) -
Sürücü Hüseyin,
Tatlı Ersan,
Değirmenci Ali,
Okudan Selnur,
Aktoz Meryem,
Boz Hakkı
Publication year - 2008
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/j.1540-8175.2008.00734.x
Subject(s) - isovolumetric contraction , cardiology , concentric , medicine , eccentric , diastole , doppler imaging , geometry , mathematics , physics , blood pressure , quantum mechanics
Objective: We investigated how velocity of isovolumetric relaxation period on pulsed‐wave tissue Doppler trace (IVRa and IVRb) is affected by the left ventricular (LV) geometry changes. Methods: Two hundred cases without exclusion criteria were included in the study. Normal LV mass index (LVMI) and normal relative wall thickness (RWT) was assigned to group 1 (n = 72). Concentric remodeling (normal LVMI and increased RWT) was defined to group 2 (n = 25). Eccentric LV hypertrophy (LVH) (increased LVMI and normal RWT) was defined to group 3 (n = 62). And finally, concentric LVH (increased LVMI and increased RWT) was defined to group 4 (n = 41). Results: Patients with LVH (groups 3 and 4) were older than group 1 (P = 0.017 and 0.001). It was observed in the assessment of M‐mode ECHO parameters that the aortic valve diameter, aortic valve opening, LV end‐systolic diameter (LVESD), LV end‐diastolic diameter (LVEDD), and left atrium (LA) were higher in cases with eccentric LVH. It was shown that Ea velocity and Sa velocity time integral (Sa‐VTI) were decreased with LV geometry change. However, IVRa velocity and E/Ea were increased as LV geometry change. A positive correlation between IVRa velocity and LVMI (correlation ratio = 34%, P = 0.000) was found. Similarly, a positive correlation between IVRa velocity and RWT (correlation ratio = 17%, P = 0.025) was found. Conclusion: IVRa velocity exhibits a positive correlation with LV geometry changes indicating that IVRa velocity is affected by LV geometry like the other parameters influenced by LV geometry.