经曰脉滑者多血少气涩者少血多气大者血气俱多脉来大而坚者血气俱实小者血气俱少脉来细而缓者血气俱虚代者气衰细者气少浮而绝者气辟大而滑中有短气尺脉涩而坚为血实气虚尺脉细而微者血气俱不足(云云见本文)刘立之脉理玄要曰下手脉沉便知是气沉极则伏涩弱难治其或沉滑气兼痰饮