Objective To select items of traditional Chinese medicine（TCM） diagnostic scale for phlegm-blood stasis syndrome of angina pectoris and coronary heart disease

and to lay a foundation for the formation of a complete scale. Methods China Biology Medicine（CBM）

Chinese National Knowledge Infrastructure（CNKI）

VIP and PubMed were searched for literatures on syndrome of intermingled phlegm and blood stasis of coronary heart disease and angina pectoris. The symptoms

signs

tongue and pulse characteristics of coronary heart disease and angina pectoris in the literature were extracted

and those with high frequency were selected to form a preliminary scale based on expert opinions in this field. Totally 112 patients with angina pectoris and coronary heart disease were included. Frequency method

t test

discrete trend method

correlation coefficient and Cronbach coefficient were used to select item for universality

distinction

sensitivity

independence

representativeness of the preliminary scale

and delete the items that were not selected by more than 2 methods to form the final scale. Results Combined with the included118 articles and expert opinions

28 high frequency items were extracted

such as dark purple tongue

slippery pulse

greasy fur

tightness of chest

petechiae or ecchymosis on the tongue

dark complexion

etc. With the above selection method

10 items such as anorexia

blue and purple sublingual vein were deleted

and remaining 18 items were chest tightness

chest pain

sleepiness

physical heaviness

obesity

sticky mouth

cyanotic lips

dark complexion

abdominal fullness

viscous stool

dark-purple tongue

petechiae or ecchymosis on the tongue

greasy fur

slippery pulse

wiry pulse

slippery and wiry pulse

dizziness

pale tongue. Conclusion The scale has high universality

distinction

sensitivity

independence and representativeness. It can lay a foundation for the development of TCM diagnostic scale for angina pectoris and coronary heart disease with TCM characteristics.