Qi

blood and fluid are all transformed and produced in spleen and stomach in the middle energizer.They depend on each other functionally

so Qi deficiency

Qi stagnation

stasis

turbid phlegm and other pathological changes of Qi

blood and fluid always result from each other. "Poor blood flow always resulting in water retention"

summarily describing the pathological causality of Qi

blood and fluid

is used to explain the occurrence and development of coronary heart disease（ CHD）. The authors think all the common causes of CHD could lead to the aberration of Qi generation or Qi transformation

and then result in "poor blood flow"

and the generated phlegm water could bind with the visible components in blood

generating plaque

resulting in lumen stenosis that obstructs blood circulation. The cardiac vessels then become obstructed

and "the obstruction causes the pain"; the heart loses its nourishment

and "the malnourishment causes the pain"; the long-time combining phlegm and stasis could transform into heat and toxin

then eroding the vessels and muscle

and the deteriorated syndromes occur. As for the treatment

Qi should be invigorated as well as regulated

and activating blood should be accompanied with dissolving phlegm

and heat-clearing and detoxifying drugs could be added to reduce cardiovascular events in CHD.