A first member is adapted to measure an electrocardiogram of a patient. A second member is adapted to measure a peripheral pulse wave of the patient. A first calculator calculates a pulse wave propagation time (PWTT) and a heart rate (HR) of the patient based on the electrocardiogram and the peripheral pulse wave. A second calculator calculates a cardiac output (CO) of the patient with an equation of CO=(.alpha.KPWTT+.beta.K)HR, where .alpha., .beta. and K are coefficients inherent to the patient.

 
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> Method and system for processing electrocardiograms

> System and method for ECG-triggered retrospective color flow ultrasound imaging

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