Peripheral vascular signs are abnormal changes in vascular pulsations or waveforms found when examining peripheral vessels in certain disease conditions. Clinically, they are mostly seen in aortic valve insufficiency, and common peripheral vascular signs in this disease include capillary pulsation sign, watery pulse, alternating pulse, odd pulse, flooded pulse, gunshot sound, fine pulse and other manifestations. The capillary pulsation sign is the alternating red and white color seen when the patient is pressed by hand to the end of the nail bed. Microvascular pulsation is also called capillary pulsation sign. Water rushing pulse is also called trapped pulse, which is the most common pericapillary vascular sign when the patient raises the small arm above the head and will all clench and feel the pulsation, and the radial artery rises abruptly and sharply and forcefully.