title: [Study on the right cardiac structure and function in patients with obstructive sleep apnea syndrome].
abstract: OBJECTIVE
  To investigate the effect of obstructive sleep apnea syndrome(OSAS) on the right cardiac structure and function.
  
  
  METHODS
  The right cardiac structure and function were measured by using M-mode and two-dimension echocardiography in 30 OSAS patients.
  
  
  RESULTS
  In moderate and severe OSAS groups, the right ventricular end diastolic volume (RVEDV), stroke volume (SV) and right pulmonary artery inner diameter (RPAD) increased markedly, and the E/A of the right ventricular decreased in the meantime as compared with the control group.
  
  
  CONCLUSIONS
  OSAS not only effects the right cardiac structure, but also the right cardiac systolic and diastolic function.
authors.affiliation: Second Hospital of Shanxi Medical University, Taiyuan 030001, China.
authors.forename: P
authors.initials: P
authors.lastname: Wang
authors.forename: Z
authors.initials: Z
authors.lastname: Liu
authors.forename: M
authors.initials: M
authors.lastname: Song
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D004452:Echocardiography; D005260:Female; D006321:Heart / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D017286:Polysomnography; D020181:Sleep Apnea, Obstructive / Q000000981:diagnostic imaging / Q000473:pathology* / Q000503:physiopathology*; D018497:Ventricular Dysfunction, Right; D055815:Young Adult