期刊
ECHOCARDIOGRAPHY-A JOURNAL OF CARDIOVASCULAR ULTRASOUND AND ALLIED TECHNIQUES
卷 29, 期 7, 页码 779-784出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1540-8175.2012.01700.x
关键词
right atrial pressure; tissue Doppler imaging
Background: Evaluation of right atrial pressure (RAP) provides useful diagnostic, therapeutic, and prognostic information. Aim: To assess the utility of several conventional and tissue Doppler parameters in the estimation of RAP. Methods: Among 50 consecutive patients (median age: 50 years; all in sinus rhythm), invasively measured RAP was simultaneously correlated with pulsed Doppler of tricuspid inflow (peak E and A velocities, E-wave deceleration time) and pulsed tissue Doppler of lateral tricuspid annulus (peak E' and A' velocities, isovolumic relaxation time [IVRT], acceleration time and rate of E-wave, deceleration time and rate of E'-wave). These ratios were calculated: E/A, E'/A, E/E', and E/IVRT. Results: The median RAP was 14 mmHg (range 127 mmHg) with 29 patients (58%) having an elevated RAP (>10 mmHg). Among all studied Doppler variables, E/E ratio showed the strongest correlation with RAP (r = 0.84, P < 0.001) with the following regression equations: RAP = 1.24 + (1.69 x E/E). The mean difference between Doppler and invasively measured RAP was 0.21 +/- 2.6 mmHg. E/ E ratio >= 4.5 provides 89% sensitivity and 100% specificity for detection of elevated RAP (receiver operating characteristic area 0.95; P < 0.001). Conclusion: Of all echocardiographic variables investigated, tricuspid annular E/E' ratio is identified as the best index for noninvasive determination of RAP.
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