Esse tal de Speckle Tracking...

Estimation of left ventricular filling pressures by speckle tracking echocardiography in patients with idiopathic dilated cardiomyopathy

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Eur J Echocardiogr (2011) 12 (1):11-18.

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Methods and results Fifty-one patients with idiopathic dilated cardiomyopathy (IDC) underwent pulsed-wave tissue Doppler echocardiography and 2D-STE performed simultaneously with right heart catheterization. Receiver operating characteristic analysis showed that circumferential strain and the SR during late diastolic LV filling (0.956 and 0.951, both P = 0.001), E/circumferential SR at early diastolic LV filling (0.949, P = 0.001), andE/circumferential strain at the time of peak E-wave (0.948, P = 0.001) had greater area under the curve than the E/Ea ratio (0.911, P = 0.001) for the prediction of pulmonary capillary wedge pressure > 12 mmHg.

Conclusion When compared with the E/Ea ratio, several 2D-STE-derived parameters better estimated the increase in LVFP in patients with IDC.

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Está no gráfico acima, repare na diferença de sensibilidade e especificidade dos "velhos" e novos métodos.

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Todo método em ecocardiografia quando nasce, seu pai-inventor diz: 

- Quando você crescer, vai predizer a pressão de enchimento do ventrículo esquerdo!

rsrs

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Mas isso não desmerece o Speckle Tracking, pelo contrário, o coloca como realmente promissor na área.

Falta padronizar o método, os softwares e treinar os médicos.

Depois disso, vai no automático.

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