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Quantitative analysis of mitral valve morphology in atrial functional mitral regurgitation using real-time 3-dimensional echocardiography atrial functional mitral regurgitation

Overview of attention for article published in Cardiovascular Ultrasound, August 2018
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Title
Quantitative analysis of mitral valve morphology in atrial functional mitral regurgitation using real-time 3-dimensional echocardiography atrial functional mitral regurgitation
Published in
Cardiovascular Ultrasound, August 2018
DOI 10.1186/s12947-018-0131-1
Pubmed ID
Authors

Tao Cong, Jinping Gu, Alex Pui-Wai Lee, Zhijuan Shang, Yinghui Sun, Qiaobing Sun, Hong Wei, Na Chen, Siyao Sun, Tingting Fu

Abstract

Atrial fibrillation (AF) can result in atrial functional mitral regurgitation (MR), but the mechanism remains controversial. Few data about the relationship between the 3-dimensional morphology of the MV and the degree of MR in AF exist. Real-time 3-dimensional transesophageal echocardiography (3D-TEE) of the MV was acquired in 168 patients with AF (57.7% persistent AF), including 25 (14.9%) patients with moderate to severe MR (the MR+ group) and 25 patients without AF as controls. The 3-dimensional geometry of the MV apparatus was acquired using dedicated quantification software. Compared with the group of patients with no or mild MR (the MR- group) and the controls, the MR+ group had a larger left atrium (LA), a more dilated mitral annulus (MA), a reduced annular height to commissural width ratio (AHCWR), indicating flattening of the annular saddle shape, and greater leaflet surfaces and tethering. MR severity was correlated with the MA area (r2 = 0.43, P < 0.01) and the annulus circumference (r2 = 0.38, P < 0.01). A logistic regression analysis indicated that the MA area (OR: 1.02, 95% CI: 1.01-1.03, P < 0.01), AHCWR (OR: 0.24, 95% CI: 0.14-0.35, P = 0.04) and MV tenting volume (OR: 3.24, 95% CI: 1.16-9.08, P = 0.03) were independent predictors of MR severity in AF patients. The mechanisms of "atrial functional MR" are complex and include dilation of the MA, flattening of the annular saddle shape and greater leaflet tethering.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 35 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 35 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 7 20%
Student > Doctoral Student 5 14%
Researcher 5 14%
Other 4 11%
Student > Ph. D. Student 2 6%
Other 4 11%
Unknown 8 23%
Readers by discipline Count As %
Medicine and Dentistry 19 54%
Sports and Recreations 2 6%
Engineering 2 6%
Social Sciences 1 3%
Materials Science 1 3%
Other 1 3%
Unknown 9 26%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 22 August 2018.
All research outputs
#14,423,597
of 23,100,534 outputs
Outputs from Cardiovascular Ultrasound
#168
of 314 outputs
Outputs of similar age
#187,494
of 333,760 outputs
Outputs of similar age from Cardiovascular Ultrasound
#5
of 6 outputs
Altmetric has tracked 23,100,534 research outputs across all sources so far. This one is in the 35th percentile – i.e., 35% of other outputs scored the same or lower than it.
So far Altmetric has tracked 314 research outputs from this source. They receive a mean Attention Score of 4.4. This one is in the 42nd percentile – i.e., 42% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 333,760 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 40th percentile – i.e., 40% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 6 others from the same source and published within six weeks on either side of this one.