[Relationship between tongue colour and cardio-vascular function].
The cardiac diastolic and systolic function, arterial compatibility and total arterial resistance of 116 patients was investigated. Using RM-6000 polygraph recorder, five kind of tongue pictures were described, and their impedance cardiogram, carotid arteriogram and their differential spectrum, cardiophonogram and electrocardiogram were examined. The results showed that the PEP index in presphygmic period of purplish tongue group was larger than that of other groups, while the PEP/LVET, HI, SV, SVI and CI indexs of purplish tongue group was less than that of other groups. The cardiac function index of the pale and dark-red tongue group were lower than that of pale-red tongue group. The cardiac function index of red tongue was similar to pale-red tongue. According to cardiac function index, the cardiac function displayed that: pale red tongue > red tongue > dark-red tongue > pale tongue > purplish tongue.