Rodrigo, a onda a´serve para alguma coisa!!!!!

Estimation of left atrial blood stasis using diastolic late mitral annular velocity
Eur Heart J Cardiovasc Imaging (2012)
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Diastolic late mitral annular velocity (a′) measured by transthoracic echocardiography (TTE) is reported to represent left atrial (LA) pump function and the severity of LA remodelling. The purpose of this study is to investigate the association between a′ and LA blood stasis in patients with non-valvular paroxysmal atrial fibrillation.
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Receiver-operating characteristic curve analysis showed that the best cut-off value of a′ was 7.0 cm/s for the prediction of SEC with a sensitivity of 80%, specificity of 81%, and predictive accuracy of 80%. Multivariate analysis revealed that decreased a′ (OR = 0.61, P = 0.0026) was independently associated with SEC.
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Conclusion Decreased a′ may be a useful parameter for the estimation of LA blood stasis in patients with paroxysmal atrial fibrillation.
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Um aluno do ecocardiograma da UNICAMP fez prova prática com o Rodrigo em SP. Como sempre, foi muito bem recebido e conduzido. Durante o exame, ele perguntou ao aluno qual seria a utilidade de medir a onda a´?
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Gostei muito da pergunta, apesar de não saber responder. O estudo acima prova que temos sim, uso racional para a medida da onda tecidual a´.
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