quarta-feira, maio 26, 2010
Fibrilação atrial e Strain do átrio esquerdo
Left Atrial Strain and Strain Rate in Patients With Paroxysmal and Persistent Atrial Fibrillation
Circulation: Cardiovascular Imaging. 2010;3:231-239
Conclusion, LA wall fibrosis, implied by delayed enhancement on MRI, is inversely related to LA strain and strain rate. Echocardiographic assessment of structural and functional remodeling of the LA is possible from gray-scale images. These techniques appear to have some discriminatory power in assessing patients with paroxysmal versus persistent AF. Combined, noninvasive imaging with atrial strain and strain rate and quantification of LA wall fibrosis by DE-MRI may be helpful in predicting outcomes and guiding therapeutic strategies in patients with AF. Novel imaging strategies such as those described in this report may allow us to identify patients earlier in their disease process, before the development of severe or irreversible abnormalities. Echocardiographic strain imaging of the atria may be particularly useful in centers where DE-MRI is unavailable or in patients who are not candidates for MRI.
Ao final do curso preparatório pra prova, um aluno me perguntou qual das novas tecnologias parecia mais promissora.
Respondi de pronto: Strain com uso do Speckle Traking.
No artigo acima, a análise do Strain no Atrio esquerdo ajuda a entender o grau de doença já presente no átrio e com isso, as chances de reversão permanente da fibrilação.