Fig. 2From: Use of ultrasound-measured internal jugular vein collapsibility index to determine static intracardiac pressures in patients with presumed pulmonary hypertensionSchematic representation of ultrasound findings in Short-axis and M-mode. 2-cm manual compression of the IJ is noted on the right panel of the figure. IJ internal jugular vein, CA carotid artery, Max maximum, D diameter, Min minimumBack to article page