(a)
(b)
(c)
(d)
(e)

Figure 4: Venous intervention through USG method. Jugular vein is out of plane view. b, c, d, and e represent a needle that appears as a hyperechoic point on the ultrasound screen within the lumen of the jugular vein and entry appears in the blood of the injector. IJV, internal jugular vein; CA, carotid artery.