Reliability of echocardiographic speckle-tracking derived bi-atrial strain assessment under different hemodynamic conditions

• Verfasst von: Sareban, Mahdi [VerfasserIn]
• Verfasst von: Fried, Sebastian [VerfasserIn]
• Verfasst von: Mairbäurl, Heimo [VerfasserIn]
• Verfasst von: Berger, Marc Moritz [VerfasserIn]
• Verfasst von: Niebauer, Josef [VerfasserIn]
• Titel: Reliability of echocardiographic speckle-tracking derived bi-atrial strain assessment under different hemodynamic conditions
• Verf.angabe: Mahdi Sareban, Tabea Perz, Franziska Macholz, Bernhard Reich, Peter Schmidt, Sebastian Fried, Heimo Mairbäurl, Marc M. Berger, Josef Niebauer
• E-Jahr: 2017
• Jahr: 12 May 2017
• Umfang: 8 S.
• Fussnoten: Published online 12 May 2017 ; Gesehen am 28.08.2018
• Titel Quelle: Enthalten in: The international journal of cardiovascular imaging
• Ort Quelle: Dordrecht [u.a.] : Springer, 2001
• Jahr Quelle: 2017
• Band/Heft Quelle: 33(2017), 11, Seite 1685-1692
• ISSN Quelle: 1875-8312
• DOI: doi:10.1007/s10554-017-1154-7
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Atrial function
• Sach-SW: Cardiac imaging
• Sach-SW: Deformation
• Sach-SW: Diastolic function
• Sach-SW: Reproducibility
• K10plus-PPN: 1580477542

Abstract

The aim of this study was to assess intra- and inter-observer variability of left (LA) and right atrial (RA) strain indices obtained by two-dimensional speckle-tracking echocardiography (2D-STE) in a healthy group of individuals at low-altitude and after rapid ascent to high-altitude in order to provoke altered systemic and pulmonary hemodynamics otherwise seen in various cardiac diseases. Twenty healthy subjects underwent transthoracic echocardiography during a baseline examination at low-altitude (424 m) as well as 7, 20 and 44 h after arrival at high-altitude (4559 m). Atrial strain indices (i.e. reservoir, conduit and contractile strain) were determined off-line by two independent observers. Intra- and inter-observer reproducibility of variables was assessed by intra-class correlation coefficients (ICCs), coefficients of variation and Bland Altman plots. Heart rate, systemic blood pressure and pulmonary artery pressure increased significantly from low-altitude to the first examination at high-altitude. Intra-observer ICCs were ≥0.90 except for RA conduit strain with an ICC of 0.86. The mean intra-observer differences were small and limits of agreement of relative differences were narrow for all atrial strain parameters (<3 and <16%, respectively). Inter-observer ICCs (0.80-0.90), mean biases and limits of agreement (<4 and <20%, respectively) were greater than intra-observer results for all parameters. Intra- and inter-obserer ICCs for all atrial strain variables did not differ between low- and high-altitude. 2D-STE-derived bi-atrial strain indices have excellent intra- and moderate inter-observer reproducibility with no effect of high-altitude-induced hemodynamic changes on reliability results.