Aims: This study tested the feasibility of velocity vector imaging (VVI) analysis to quantitatively assess right ventricular (RV) function during stress echocardiography (SE).
Methods And Results: We prospectively enrolled 73 patients (treadmill 38, dobutamine 35) undergoing SE using an Acuson C512 ultrasound system. The RV ejection fraction was measured for global RV function. The radial velocity, circumferential strain, and strain rate (SR) of four segments from the mid-level RV short-axis view, and the longitudinal velocity, strain, and SR of six segments from the RV apical four-chamber view were used to evaluate regional RV function. The VVI analysis successfully in 70 of 73 cases (96%). Fifty (71%) of the 70 demonstrated a normal response to stress, showing an increased RV ejection fraction (P < 0.001), and longitudinal velocity and SR in the basal lateral walls at peak stress (7.7 +/- 2.0-10.3 +/- 2.9 cm/s, -1.9 +/- 0.7 to -3.2 +/- 1.4/s, P < 0.001); the longitudinal displacement and strain of the same segment did not show a significant increase.
Conclusion: Quantitative assessment of global and regional RV function during SE was feasible using VVI analysis. Longitudinal velocity and SR of the RV basal lateral wall were significantly better than longitudinal displacement or strain for detecting RV response during SE.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1093/ejechocard/jep190 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Digital Gaming and Subsequent Health and Well-Being Among Older Adults: Longitudinal Outcome-Wide Analysis.
J Med Internet Res
January 2025
Department of Epidemiology, Boston University School of Public Health, Boston University, Boston, MA, United States.
Background: Digital gaming has become increasingly popular among older adults, potentially offering cognitive, social, and physical benefits. However, its broader impact on health and well-being, particularly in real-world settings, remains unclear.
Objective: This study aimed to evaluate the multidimensional effects of digital gaming on health and well-being among older adults, using data from the Japan Gerontological Evaluation Study conducted in Matsudo City, Chiba, Japan.
The typical and the atypical filamins of Drosophila.
Genome
January 2025
Dalhousie University, Biology, Halifax, Nova Scotia, Canada;
The actin cytoskeleton is a dynamic mesh of filaments that provide structural support for cells and respond to external deformation forces. Active sensing of these forces is crucial for the function of the actin cytoskeleton, and some actin crosslinkers accomplish it. One such crosslinker is filamin, a highly conserved actin crosslinker dimeric protein with an elastic region capable of responding to mechanical changes in the actin cytoskeleton.
View Article and Find Full Text PDFA Spiropyran-Based Hydrogel Composite for Wearable Detectors to Monitor Visible Light Intensity to Prevent Myopia.
ACS Appl Mater Interfaces
January 2025
Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, 928 Second Avenue, 310018 Hangzhou, China.
A wearable detector to monitor visible light intensity is realized by the restrained photochromism of a hydrogel composite containing light-responsive spiropyran with hydroxyl groups (SPOH). When exposed to visible light, the SPOH experiences a ring-opening to a ring-closed transition accompanied by discoloration from red to yellow. Unlike in the solution, the photochromism/discoloration rate is strongly correlated to the cross-linking points.
View Article and Find Full Text PDFChronic stress-induced cholesterol metabolism abnormalities promote ESCC tumorigenesis and predict neoadjuvant therapy response.
Proc Natl Acad Sci U S A
February 2025
Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450000, China.
Recent studies have demonstrated that chronic stress can enhance the development of multiple human diseases, including cancer. However, the role of chronic stress in esophageal carcinogenesis and its underlying molecular mechanisms remain unclear. This study uncovered that dysregulated cholesterol metabolism significantly promotes esophageal carcinogenesis under chronic stress conditions.
View Article and Find Full Text PDFEnvironmental variability across space and time drives the recolonization pattern of a historically persecuted large carnivore.
Proc Natl Acad Sci U S A
February 2025
Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås 1432, Norway.
Wildlife populations are not static. Intrinsic and extrinsic factors affect individuals, which lead to spatiotemporal variation in population density and range. Yet, dynamics in density and their drivers are rarely documented, due in part to the inherent difficulty of studying long-term population-level phenomena at ecologically meaningful scales.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!