ABSTRACT
To explore the guidance value of QT dispersion (QTd) and JT dispersion (JTd) for identifica‐tion of coronary heart disease (CHD) with blood stasis syndrome type .Methods : A total of 246 CHD patients of our hospital were divided into blood stasis block group (n＝71) ,Tanbixinyang group (TBXY group ,n＝42) ,liver and renal Yin deficiency group (LRYD group ,n＝44) ,Qi and Yin deficiency group (QYD group ,n＝45) and cardiac and renal Yang deficiency group (CRYD group ,n＝35) according to four diagnostic methods of Traditional Chinese Medicine (TCM).The QTd ,corrected QTd (QTcd) ,JTd and corrected JTd (JTcd) were observed in all groups , and their predictive value for blood stasis block were analyzed .Results : Compared with TBXY ,LRYD ,QYD and CRYD group ,there were significant rise in levels of QTd [ (72. 21 ± 16.48) ms ,(50.89 ± 12.77) ms ,(49. 17 ± 7.91) ms ,(62. 54 ± 12.80) msvs.(82.30 ± 19.05) ms] ,QTcd [(73.82 ± 18. 72) ms ,(51.41 ± 12.81) ms ,(51. 12 ± 9.73) ms ,(62.48 ± 13.35) msvs .(87. 75 ± 20. 72) ms] ,JTd [ (74. 54 ± 16.83) ms ,(52.18 ± 12. 68) ms ,(51. 50 ± 10. 78) ms ,(64.75 ± 12. 30) msvs.(89.43 ± 24.40 ) ms] and JTcd [ (75.14 ± 21. 05 ) ms ,(54. 93 ± 11.41 ) ms , (52.90 ± 10. 03) ms ,(65.26 ± 12. 72) msvs.(91. 98 ± 24. 22) ms] in blood stasis block group , P＝0. 001 all.Area under curve (AUC) of QTd ,QTcd ,JTd ,JTcd predicting CHD with blood stasis block was 0. 832 ,0. 861 ,0.856 and 0.854 respectively ,and optimal cutoff point was 70.77ms ,69.83ms ,77. 80ms and 77.51ms respectively .Conclu‐sion : QTd and JTd levels on ECG in CHD patients with blood stasis block type are significantly higher than other syndrome types , so they possess certain guidance value for CHD syndrome typing .