If arteries and veins approachs infinity, diastolic pressure is too low, it is even 0, systole pressing is tall, give priority to arterial valve closedown likely not complete, can make clear further through doing heart colour to exceed.

• 假如脉压无穷大，舒张压过低，甚至为0，收缩压高，有可能为主动脉瓣闭锁不全，可以通过做心脏彩超进一步明确。