| Title |
Normal references of right ventricular strain values by two-dimensional strain echocardiography according to the age and gender
|
|---|---|
| Published in |
The International Journal of Cardiovascular Imaging, July 2017
|
| DOI | 10.1007/s10554-017-1217-9 |
| Pubmed ID | |
| Authors |
Jae-Hyeong Park, Jin-Oh Choi, Seung Woo Park, Goo-Yeong Cho, Jin Kyung Oh, Jae-Hwan Lee, In-Whan Seong |
| Abstract |
Right ventricular (RV) strain values by 2-dimensional strain echocardiography (STE) can be used as objective markers of RV systolic function. However, there is little data about normal reference RV strain values according to age and gender. We measured normal RV strain values by STE. RV strain values were analyzed from the digitally stored echocardiographic images from NORMAL (Normal echOcardiogRaphic diMensions and functions in KoreAn popuLation) study for the measurement of normal echocardiographic values performed in 23 Korean university hospitals. We enrolled total 1003 healthy persons in the NORMAL study. Of them, we analyzed 2-dimensional RV strain values in 493 subjects (261 females, mean 47 ± 15 years old) only with echocardiographic images by GE machines. Their LV systolic and diastolic functions were normal. RV fractional area change was 48 ± 6% and tricuspid annular plane systolic excursion was 23 ± 3 mm. Total RV global longitudinal peak systolic strain (RVGLStotal) was -21.5 ± 3.2%. Females had higher absolute RVGLStotal (-22.3 ± 3.3 vs -20.7 ± 2.9%, p < 0.001) than males. Younger (<50 years old) females had higher absolute RVGLStotal (-22.9 ± 3.2 vs -20.5 ± 2.8%, p < 0.001) than age matched males. RVGLStotal in females gradually increased according to age (p for trend = 0.002) and becomes almost similar in age ≥50 years. However, this trend was not seen in males (p for trend = 0.287), and younger males had similar RVGLStotal value to that of older males (age ≥50 years, -20.5 ± 2.8 vs -20.9 ± 3.1%, p = 0.224). We calculated normal RVGLS values in normal population. Females have higher absolute strain values than males, especially in younger age groups (<50 years old). |
X Demographics
The data shown below were collected from the profiles of 3 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Greece | 1 | 33% |
| Mexico | 1 | 33% |
| United States | 1 | 33% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 2 | 67% |
| Practitioners (doctors, other healthcare professionals) | 1 | 33% |
Mendeley readers
The data shown below were compiled from readership statistics for 41 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 41 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 8 | 20% |
| Student > Bachelor | 4 | 10% |
| Other | 4 | 10% |
| Researcher | 2 | 5% |
| Professor > Associate Professor | 2 | 5% |
| Other | 5 | 12% |
| Unknown | 16 | 39% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 14 | 34% |
| Unspecified | 1 | 2% |
| Agricultural and Biological Sciences | 1 | 2% |
| Business, Management and Accounting | 1 | 2% |
| Sports and Recreations | 1 | 2% |
| Other | 1 | 2% |
| Unknown | 22 | 54% |
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 30 July 2017.
All research outputs
#16,725,651
of 25,382,440 outputs
Outputs from The International Journal of Cardiovascular Imaging
#802
of 2,012 outputs
Outputs of similar age
#198,692
of 327,247 outputs
Outputs of similar age from The International Journal of Cardiovascular Imaging
#19
of 48 outputs
Altmetric has tracked 25,382,440 research outputs across all sources so far. This one is in the 32nd percentile – i.e., 32% of other outputs scored the same or lower than it.
So far Altmetric has tracked 2,012 research outputs from this source. They receive a mean Attention Score of 2.3. This one has gotten more attention than average, scoring higher than 54% of its peers.
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 327,247 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 36th percentile – i.e., 36% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 48 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 50% of its contemporaries.