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Technical Aspects of Diastology: Why Mitral Inflow and Tissue Doppler Imaging Are the Preferred Parameters?
Author(s) -
Bess Renee L.,
Khan Shahabuddin,
Rosman Howard S.,
Cohen Gerald I.,
Allebban Zuhair,
Gardin Julius M.
Publication year - 2006
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.1540-8175.2006.00215.x
Subject(s) - cardiology , doppler imaging , medicine , diastole , doppler effect , mitral valve , doppler echocardiography , inflow , sonographer , diastolic function , mitral annulus , radiology , ultrasonography , physics , mechanics , blood pressure , astronomy
Doppler methods for assessing left ventricular (LV) diastolic function have increased in number and complexity. However, time constraints may prevent measurement of all parameters during routine transthoracic echocardiography. Therefore, we designed a study to determine which Doppler parameters could be most successfully and quickly obtained. The recording success rate and time required to record different LV diastolic function parameters were evaluated in 80 patients. A specific recording protocol was followed by an experienced, credentialed sonographer and time intervals to record each parameter were measured. In comparison with color Doppler M‐mode of LV inflow propagation velocities (Vp) and pulmonary venous (PV) flow measurements, transmitral valve (MV) flow and tissue Doppler imaging (TDI) of the mitral annulus had the highest recording success rate and required the shortest time to record. PV flow and Vp took longer to obtain (80.1 ± 34.3 sec and 57.1 ± 29.1 sec, respectively) than did mitral valve inflow (36.3 ± 20.7sec) and mitral valve annular TDI (29.3 ± 18.4 sec for septal and 33.3 ± 14.5sec for lateral). MV flow velocities, Vp, and TDI were successfully recorded in virtually all patients (99–100%). In comparison, the PV flow velocities and durations were successfully recorded less often. The range of success rates for the six PV flow parameters was 49–84%. Since MV flow and TDI also have been shown by us to have the lowest interreader variability, measurement of these two parameters may be preferred for routine clinical evaluation of LV diastolic function in a busy echocardiography laboratory.