title: Value and limitations of transesophageal echocardiography in assessment of mitral valve prostheses.
abstract: BACKGROUND
  Transthoracic Doppler echocardiography examination has become an integral part of the investigations performed in patients with mitral valve prostheses. The limitations of the transthoracic approach are well documented. Transesophageal echocardiography provides a unique window for achieving a clear view of the mitral prosthesis.
  
  
  RESULTS
  This study shows the usefulness of transesophageal echocardiography in clinical practice for assessment of patients with a mitral valve prosthesis. This technique demonstrated an abnormality in 48% of patients who had normal results on transthoracic examination. The overall sensitivity of transesophageal echocardiography was 96%.
  
  
  CONCLUSIONS
  Transesophageal echocardiography constitutes an essential part of a comprehensive two-dimensional/Doppler echocardiographic examination in patients with suspected malfunction of mitral prostheses.
authors.affiliation: Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic, Rochester, Minn 55905.
authors.forename: B K
authors.initials: BK
authors.lastname: Khandheria
authors.forename: J B
authors.initials: JB
authors.lastname: Seward
authors.forename: J K
authors.initials: JK
authors.lastname: Oh
authors.forename: W K
authors.initials: WK
authors.lastname: Freeman
authors.forename: B A
authors.initials: BA
authors.lastname: Nichols
authors.forename: L J
authors.initials: LJ
authors.lastname: Sinak
authors.forename: F A
authors.initials: FA
authors.lastname: Miller
authors.forename: A J
authors.initials: AJ
authors.lastname: Tajik
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001705:Bioprosthesis; D006328:Cardiac Catheterization; D004452:Echocardiography / Q000379:methods*; D004868:Equipment Failure; D004947:Esophagus; D005069:Evaluation Studies as Topic; D005260:Female; D006350:Heart Valve Prosthesis / Q000592:standards*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000601:surgery; D013909:Thorax