title: [Comparative analysis on results of treadmill test in patients of coronary heart disease caused angina pectoris with Qi-Yin deficiency syndrome with or without accompanied phlegm and blood stasis syndrome].
abstract: OBJECTIVE
  To explore the objective special features and role of various indexes of treadmill exercise test (TET) in patients of coronary heart disease (CHD) caused angina pectoris with Qi-Yin deficiency syndrome (QYD) with or without accompanied phlegm and blood stasis syndrome (PBS), to provide references for preventing and treating CHD in clinical practice.
  
  
  METHODS
  One hundred and one patients, whose diagnosis measured to the diagnostic standard and the inclusion criteria of angina pectoris and CHD, were classified according to their TCM syndrome type to two groups, the QYD without PBS group (49 cases) and the QYD with PBS group (52 cases). TET was conducted on all the patients. The relative parameters were measured and compared.
  
  
  RESULTS
  As compared with the QYD without PBS group, in the QYD with PBS group, (1) the TET positive rate was higher; (2) total exercise time was lesser; (3) the maximal metabolic equivalent (Max MET) was lower; (4) the average depression of ST segment at the exercise endpoint of test (mV) was higher; (5) the time of ST segment depressed for 0.1mV (min) was longer; (6) the metabolic equivalent during ST-segment depressed by 0.1mV was shorter; and (7) the change of QRS wave time-limit before and immediately after TET was more evident. Moreover, in the testing time more patients revealed angina episode after exercise, and less patients had their heart rate reached the requirement in the QYD with PBS group than those in the QYD without PBS group. Comparison between the two groups in all the above-mentioned indices showed significant difference respectively (P < 0.01 or P < 0.05).
  
  
  CONCLUSIONS
  Patients with CHD caused angina pectoris of QYD with PBS are worse in the tolerance for exercise and severer in pathological change of coronary artery than those in those without PBS, they belong to the severe phase of TCM syndrome.
authors.affiliation: Tianjin College of TCM, Tianjin.
authors.forename: Yu-Hui
authors.initials: YH
authors.lastname: Zhang
authors.forename: Jing-Yuan
authors.initials: JY
authors.lastname: Mao
authors.forename: Zhan-Wu
authors.initials: ZW
authors.lastname: Wang
mesh_terms: D000787:Angina Pectoris / Q000503:physiopathology*; D003324:Coronary Artery Disease / Q000503:physiopathology; D003937:Diagnosis, Differential; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D008516:Medicine, Chinese Traditional; D019413:Qi; D016710:Yin Deficiency