Figure 2

Measurement of the pressure of the right cervical blood vessels (left is the cephalic side). A. Fixation method and measurement of the common carotid artery pressure: An IV catheter was inserted caudally into the common carotid artery and fixed with a vascular clip. B. The normal artery pressure. C. Measurement of the posterior facial vein pressure: An IV catheter was inserted cephalically into the posterior facial vein and no special fixation was carried out. D. The normal posterior facial vein pressure. E. Measurement of the posterior facial vein pressure after end-to-end anastomosis (EEA): An IV catheter was inserted cephalically into the posterior facial vein and fixed. F. The posterior facial vein pressure after EEA showed an arterial pressure-like change. G. Measurement of the posterior facial vein pressure after end-to-side anastomosis: An IV catheter was inserted cephalically into the posterior facial vein and fixed. H. The posterior facial vein pressure after end-to-side anastomosis shows an arterial pressure-like change.