title: [Planimetric measurement of the regurgitant orifice area using tridimensional transoesophageal echocardiography for aortic regurgitation, reproducibility and feasibility].
abstract: BACKGROUND
  Aortic regurgitation is mainly evaluated by trans-thoracic echocardiography using multi-parametric qualitative and semi quantitative tools. All those parameters can fail to meet expectations, resulting in an imperfect diagnostic reliability and assessment of aortic regurgitation severity can be challenging.
  
  
  OBJECTIVE
  We sought to evaluate feasibility and intra- and inter-observer reproducibility of aortic regurgitant orifice area measured by planimetry with tridimensional trans-esophageal echocardiography on patients with at least grade 2/4 aortic regurgitation.
  
  
  METHODS
  Consecutive patients with at least grade 2/4 aortic regurgitation measured by trans-thoracic echocardiography and referred for trans-esophageal echocardiography for any reason were included. Planimetric reconstructions of regurgitant orifice area were studied and reproducibility indexes between senior and junior observers were calculated.
  
  
  RESULTS
  Twenty-three patients were included in this study. Intra- and inter-observer reproducibility were excellent with an ICC of 0.95 [0.88-0.98], P<0.0001 and 0.91 [0.79-0.96], P<0.0001, respectively. Mean length of the measurement was 6.6±0.9min [CI95% 6.23-7.01].
  
  
  CONCLUSIONS
  Planimetric measurement of the aortic regurgitant orifice using tridimensional trans-esophageal echocardiography seems to be feasible and has great intra- and inter-observer reproducibility. Reconstruction durations were compatible with a daily use. There is a need now to investigate the reliability of this measurement as compared with the reference technique.
authors: Service de cardiologie, groupe hospitalier Paris Saint-Joseph, 185, rue Raymond-Losserand, 75014 Paris, France. Electronic address: fabien.picard@live.fr.
authors: F-A
authors: FA
authors: Picard
authors: Service de cardiologie, groupe hospitalier Paris Saint-Joseph, 185, rue Raymond-Losserand, 75014 Paris, France.
authors: P
authors: P
authors: Garçon
authors: Service de cardiologie, groupe hospitalier Paris Saint-Joseph, 185, rue Raymond-Losserand, 75014 Paris, France.
authors: A
authors: A
authors: Chaudeurge
authors: Service de cardiologie, groupe hospitalier Paris Saint-Joseph, 185, rue Raymond-Losserand, 75014 Paris, France.
authors: C
authors: C
authors: Simion
authors: Service de cardiologie, groupe hospitalier Paris Saint-Joseph, 185, rue Raymond-Losserand, 75014 Paris, France.
authors: R
authors: R
authors: Cador
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001021:Aortic Valve / Q000000981:diagnostic imaging*; D001022:Aortic Valve Insufficiency / Q000000981:diagnostic imaging*; D019560:Echocardiography, Three-Dimensional / Q000379:methods*; D017548:Echocardiography, Transesophageal / Q000379:methods*; D005240:Feasibility Studies; D005260:Female; D005602:France; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D015203:Reproducibility of Results
keywords: 3D-TEE; Aortic regurgitation; ETO-3D; Insuffisance aortique; Planimetry; Planimétrie; Regurgitant orifice area; Surface de l’orifice régurgitant; Tridimensional trans-esophageal echocardiography; Échographie trans-œsphagienne tridimensionnelle