30 anos de erros no cálculo da área aórtica

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Noninvasive estimation of valve area in patients with aortic stenosis by Doppler ultrasound and two-dimensional echocardiography

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http://circ.ahajournals.org/content/72/4/810.full.pdf+html

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Estudo com 30 pacientes usou a fórmula com sucesso parcial, r=0,89.

Ecocardiografistas replicam o método em laboratórios por todo o mundo.

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Alguém já fez 5 vezes no mesmo paciente?

Já fiz, só por curiosidade.

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A variação foi chocante.

Devo treinar mais, acredito.

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The best correlation was found when A’ (with “large” diameter) was compared with invasive results based on cardiac output measured by the Fick method (r = .89, SEE + 0.12, n 16); the worst was found when A” (with “large” diameter) was compared with invasive results based on cardiac output measurements by single-plane angiography (r = .80, SEE + 0.20, n = 30).

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