title: Different Combinations of Right Ventricular Longitudinal Velocity and Displacement Can Be Applied Effectively for Diagnosis of Right Heart Failure in Chinese Patients.
abstract: BACKGROUND
  The noninvasive evaluation of right ventricular function (RVF) in cardiovascular and pulmonary diseases remains a challenge. Internationally recommended echocardiographic parameters for the evaluation of RVF may not be applicable to China, because of the limited examination time per patient, the varying skill levels of ultrasonographers, inadequate allocation of professional specialties, and outdated instruments and equipment.
  
  
  METHODS
  Sixty-two patients admitted for right heart failure and 52 healthy volunteers were included in the analysis. The tricuspid annular plane systolic excursion (TAPSE), peak systolic velocity in the tricuspid annulus of the right ventricular free wall (S'), myocardial performance index, right ventricular fractional area change, and Doppler peak strains in the base and mid cavity were evaluated and compared between groups.
  
  
  RESULTS
  Compared with the control group, all RVF parameters in the right heart failure group showed significant deterioration (P &lt; .001). However, only TAPSE and S' were finally included in the discriminant equation. The diagnostic cutoff values derived from the receiver operating characteristic curve were &lt;13.74 mm and &lt;9.5 cm/s, respectively. The highest specificity in the diagnosis of right heart failure (100%) was achieved using S' &lt;9.5 cm/s, either alone or in combination with TAPSE &lt;13.74 mm. The highest diagnostic sensitivity (90.32%) was achieved using either TAPSE &lt;13.74 mm or S' &lt;9.5 cm/s alone.
  
  
  CONCLUSIONS
  TAPSE and S' are more suitable than other parameters for the diagnosis of right heart failure in Chinese patients. Different combinations of TAPSE and S' can be applied effectively for the diagnosis of right heart failure.
authors: Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China.
authors: Dechun
authors: D
authors: Su
authors: Department of Cardiology, The First Affiliated Hospital of Third Military Medical University, Chongqing, China.
authors: Wanxiang
authors: W
authors: Zheng
authors: Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China.
authors: Yan
authors: Y
authors: Liu
authors: Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China.
authors: Tao
authors: T
authors: Cong
authors: Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China.
authors: Yinghui
authors: Y
authors: Sun
authors: Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China.
authors: Zhijuan
authors: Z
authors: Shang
authors: Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China.
authors: Ke
authors: K
authors: Wang
mesh_terms: D001783:Blood Flow Velocity / Q000502:physiology*; D002681:China / Q000453:epidemiology; D018618:Echocardiography, Doppler, Color; D005260:Female; D005500:Follow-Up Studies; D006333:Heart Failure / Q000175:diagnosis* / Q000453:epidemiology / Q000503:physiopathology; D006352:Heart Ventricles / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D012372:ROC Curve; D012189:Retrospective Studies; D013318:Stroke Volume; D018497:Ventricular Dysfunction, Right / Q000175:diagnosis* / Q000453:epidemiology / Q000503:physiopathology; D016278:Ventricular Function, Right / Q000502:physiology*