In:
Echocardiography, Wiley, Vol. 32, No. 5 ( 2015-05), p. 734-739
Abstract:
Echocardiographic methods for estimating right atrial ( RA ) volume have not been standardized. Our aim was to evaluate two‐dimensional (2D) echocardiographic methods of RA volume assessment, using RA volume by magnetic resonance imaging ( MRI ) as the reference. Methods and Results Right atrial volume was assessed in 51 patients (mean age 63 ± 14 years, 33 female) who underwent comprehensive 2D echocardiography and cardiac MRI for clinically indicated reasons. Echocardiographic RA volume methods included (1) biplane area length, using four‐chamber view twice (biplane 4C‐4C); (2) biplane area length, using four‐chamber and subcostal views (biplane 4C‐subcostal); and (3) single plane S impson's method of disks ( S impson's). Echocardiographic RA volumes as well as linear RA major and minor dimensions were compared to RA volume by MRI using correlation and B land– A ltman methods, and evaluated for inter‐observer reproducibility and accuracy in discriminating RA enlargement. All echocardiography volumetric methods performed well compared to MRI , with P earson's correlation of 0.98 and concordance correlation ≥0.91 for each. For bias and limits of agreement, biplane 4C‐4C (bias −4.81 mL/m 2 , limits of agreement ±9.8 mL/m 2 ) and S impson's (bias −5.15 mL/m 2 , limits of agreement ±10.1 mL/m 2 ) outperformed biplane 4C‐subcostal (bias −8.36 mL/m 2 , limits of agreement ±12.5 mL/m 2 ). Accuracy for discriminating RA enlargement was higher for all volumetric methods than for linear measurements. Inter‐observer variability was satisfactory across all methods. Conclusions Compared to MRI , biplane 4C‐4C and single plane S impson's are highly accurate and reproducible 2D echocardiography methods for estimating RA volume. Linear dimensions are inaccurate and should be abandoned.
Type of Medium:
Online Resource
ISSN:
0742-2822
,
1540-8175
DOI:
10.1111/echo.2015.32.issue-5
Language:
English
Publisher:
Wiley
Publication Date:
2015
detail.hit.zdb_id:
2041033-5
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