Myocardial velocities obtained by pulsed tissue Doppler in English Cocker Spaniels with dilated cardiomyopathy and congestive heart failure
| Autor: | Guilherme G. Pereira, Guilherme T. Goldfeder, Fernanda L. Yamaki, Valéria M.C. Oliveira, Maria Helena M.A. Larsson |
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| Jazyk: | English<br />Portuguese |
| Předmět: | |
| Zdroj: | Pesquisa Veterinária Brasileira, Vol 36, Iss 9, Pp 851-856 |
| Druh dokumentu: | article |
| ISSN: | 1678-5150 0100-736x 48082279 |
| DOI: | 10.1590/s0100-736x2016000900010 |
| Popis: | Abstract: Dilated cardiomyopathy (DCM) is characterized by systolic myocardial dysfunction which is identified by low myocardial velocities obtained by pulsed tissue Doppler (PTD). However, increased preload is known to increase myocardial velocities which could overestimate myocardial function and turn dysfunction characterization into a challenge in dogs with DCM and congestive heart failure. To test the hypothesis that increased preload could hamper identification of low myocardial velocities in dogs with DCM and congestive heart failure the present study prospectively evaluated 32 English Cocker Spaniel dogs, being 16 with clinical DCM and 16 healthy for control purpose. The PTD analysis of regional velocities were performed in both longitudinal and radial myocardial displacements and systolic (Sm), early (Em) and late diastolic (Am) velocities were obtained in left ventricular free wall (LVFW) and interventricular septum (IVS). Peak radial subendocardial and subepicardial Sm velocities were lower in DCM group compared to control (0.065±0.018 vs. 0.102±0.020m/s and 0.059±0.014 vs. 0.094±0.025m/s respectively; p |
| Databáze: | Directory of Open Access Journals |
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