Fig. 4.

How to perform a passive leg raise correctly: move the patient and the bed from a semi-recumbent position with the head at 30–45° (a) to a supine position with the legs raised by 30–45° (b) and not by manually raising the patient’s legs alone. NB: ensure that the torso of the patient is horizontal. a Inset: Pearl = anchor your imaging hand on the patients torso to ensure efficient imaging and the same pulsed Doppler gate position and angle of Doppler interrogation