Deterioration of longitudinal, circumferential, and radial myocardial strains during acute coronary flow reduction: which direction of strain should be analyzed for early detection?
| Autor: | Hitomi Adachi, Toshihiko Asanuma, Kasumi Masuda, Satoshi Nakatani |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
medicine.medical_specialty
Time Factors medicine.medical_treatment Myocardial Ischemia Speckle tracking echocardiography 030204 cardiovascular system & hematology 03 medical and health sciences 0302 clinical medicine Dogs Predictive Value of Tests Ischemia Internal medicine Coronary Circulation Medicine Animals Ventricular Function Radiology Nuclear Medicine and imaging 030212 general & internal medicine Reduction (orthopedic surgery) Cardiac imaging Coronary flow Observer Variation Strain (chemistry) Postsystolic shortening business.industry Hemodynamics Speckle-tracking echocardiography Reproducibility of Results Early systolic lengthening Myocardial strain Myocardial Contraction Disease Models Animal medicine.anatomical_structure Early Diagnosis Echocardiography Cardiology Cardiology and Cardiovascular Medicine business Radial stress Artery |
| Zdroj: | International Journal of Cardiovascular Imaging. 36(9):1725-1735 |
| ISSN: | 1573-0743 |
| Popis: | This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/S10554-020-01888-4 Longitudinal myocardial strain is considered to deteriorate in the early ischemic stage compared to circumferential and radial strains because the subendocardial inner oblique fibers are generally directed along the longitudinal axis. However, it is unclear whether the decrease in longitudinal strain precedes a decrease in circumferential and radial strains during acute coronary flow reduction. The left anterior descending artery was gradually narrowed in 13 open-chest dogs. Whole-wall and subendocardial longitudinal, circumferential, and radial strains were analyzed at baseline and during flow reduction. Peak systolic and end-systolic strains, the postsystolic strain index (PSI), and the early systolic strain index (ESI) were measured in the risk area; the decreasing rate in each parameter and the diagnostic accuracy to detect flow reduction were evaluated. Absolute values of peak systolic and end-systolic strains gradually decreased with flow reduction. The decreasing rate and diagnostic accuracy of longitudinal systolic strain were not significantly different from those in other strains, although the diagnostic accuracy of radial systolic strain tended to be lower. PSI and ESI gradually increased with flow reduction. In these parameters, a lower diagnostic accuracy with respect to radial strain was not demonstrated. During acute coronary flow reduction, the decrease in longitudinal systolic strain did not precede that in circumferential systolic strain; however, the decrease in radial systolic strain may be smaller than that of other systolic strains. In contrast, there appeared to be no differences in the PSI and ESI values among the three strains. |
| Databáze: | OpenAIRE |
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