¿Cuál es el momento idóneo para la medición por ultrasonidos de la dilatación braquial mediada por flujo?

If it is assumed that compliance influences arterial dilation, systolic flow-mediated dilation is seen to be higher than in the diastolic phase in healthy subjects, whereas this difference is practically inexistent in patients. Although the difference in the brachial artery of healthy subjects does not reach significance (p = 0.055), it does in the femoral artery (p = 0.02). Therefore, on appraising the data as a whole, we recommend measurement in the diastolic phase in order to avoid the occurrence of biases when comparing between healthy and sick subjects.