Syndrome factors of essential hypertension investigated by applying factor analysis

Objective To study the syndrome factors of hypertension and supply the foundation of syndrome differentiation and treatment for hypertension.Methods A perspective observation plan was designed and 428 hypertensive patients were selected according to the unified criteria of diagnosis,inclusion and exclusion.The information of TCM four examination methods was collected and syndrome factors were extracted through frequency statistics and factor analysis.Results There were 26 common factors(syndrome factors) extracted by factor analysis.The analysis on the distribution of syndrome factors in 428 patients showed that blood stasis accounted for 17.5%,yin deficiency and heat for 17.5%,qi deficiency for 17.2%,blood deficiency for 14%,fire for 11.9%,phlegm for 9.2%,qi deficiency and phlegm for 8.4%,and qi deficiency and blood stasis for 4.2%.The synthetic analysis showed that deficiency syndrome accounted for 61.3%.Conclusion The main syndrome factors of hypertension include qi deficiency,fire,blood stasis and phlegm,and secondary factors include yin deficiency and blood deficiency.The main viscera and bowels involved include liver and kidney,secondly,heart.The most important pathological factor of hypertension is deficiency,or combining fire,phlegm and stasis and there are many complex factors.