title: [Quantitative assessment of pulmonary blood flow by echocardiography in patients with congenital heart defect].
abstract: OBJECTIVE
  To explore the possibility and reliability of echocardiography in quantitative evaluation of pulmonary blood flow in patients with congenital heart disease (CHD).
  
  
  METHODS
  Sixty-four patients with left to right shunt congenital atrial septal defect (ASD) underwent echocardiographic examinations of the right upper and lower pulmonary vein blood flow spectrum in the four-chamber face, and the right upper pulmonary vein flow velocity time integral (VTIrupv) and right inferior pulmonary venous flow velocity time integral (VTIrlpv) were calculated according to the heart rate. The VTIrupv and VTIrlpv were compared with the pulmonary blood flow (Qp) calculated by Fick method with right heart catheterization.
  
  
  RESULTS
  There was a high correlation between the right lung vein flow velocity time integral measured by the catheter of transthoracic echocardiography and Qp.
  
  
  CONCLUSIONS
  The pulmonary venous flow spectrum measured by echocardiography can be informative of the pulmonary blood flow in patients with CHD. Echocardiography may serve as a potential noninvasive technique to evaluate pulmonary blood flow in these patients.
authors.affiliation: Department of Cardiovascular Disease, Baoan People' Hospital of Shenzhen, Baoan Hospital, Southern Medical University, Shenzhen 518101, China. xzr206@163.com
authors.forename: Zheng-rong
authors.initials: ZR
authors.lastname: Xu
authors.forename: Xin-sheng
authors.initials: XS
authors.lastname: Huang
authors.forename: Yi-gao
authors.initials: YG
authors.lastname: Huang
authors.forename: Tao
authors.initials: T
authors.lastname: Huang
authors.forename: Wen-hui
authors.initials: WH
authors.lastname: Huang
authors.forename: Cao-jin
authors.initials: CJ
authors.lastname: Zhang
authors.forename: Jun-jun
authors.initials: JJ
authors.lastname: Shen
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D018618:Echocardiography, Doppler, Color; D005260:Female; D006330:Heart Defects, Congenital / Q000150:complications / Q000000981:diagnostic imaging / Q000503:physiopathology*; D006801:Humans; D006976:Hypertension, Pulmonary / Q000209:etiology / Q000503:physiopathology; D008168:Lung / Q000098:blood supply*; D008297:Male; D008875:Middle Aged; D012039:Regional Blood Flow; D055815:Young Adult