Figure 1.

Variations in Doppler velocity profiles resulting from ultrafiltration-related intravascular volume reduction in a haemodialysis patient. Note that ultrafiltration tended to increase the pulmonary vein systolic/diastolic maximal velocity ratio (S/D), decrease the mitral early diastole/atrial contraction maximal velocity ratio (E/A), decrease colour M-mode propagation velocity (Vp;) and decrease Doppler Tissue Imaging E' septal velocity, whereas E' velocity remained fairly constant when recorded on the lateral aspect of the mitral ring.