title: Aortic valve morphology definition with transthoracic combined with transesophageal echocardiography in a population with high prevalence of bicuspid aortic valve.
abstract: OBJECTIVE
  To assess the utility of transthoracic echocardiography (TTE) with second harmonic combined with transesophageal echocardiography (TEE) in defining aortic valve morphology in a subset of patients with a high prevalence of bicuspid aortic valve.
  
  
  METHODS
  Patients (n = 174) with dilated aortic root were consecutively evaluated using, initially, TTE. The aortic valve structure was assigned as tricuspid, bicuspid or undefined. In those assigned as bicuspid or undefined, TEE was performed. Other factors that could affect valve morphology assignment were recorded and evaluated in multivariate analysis.
  
  
  RESULTS
  TTE was able to characterise 89% of the tricuspid valves and 56% of the bicuspid. Bicuspid structure was the only variable that, in the multivariate analysis, was related to the inability to definitively assign aortic valve morphology (OR = 0.13). TEE was performed in 59 patients and the morphology was definitively assigned in 56 of them (95%). TEE diagnosed 15 bicuspid valves in addition to confirming the 17 identified by TTE. Overall, using TTE combined with TEE we were able to correctly assign valvular morphology in 98% of patients.
  
  
  CONCLUSIONS
  In a subset of patients with a high prevalence of bicuspid aortic valve, combination of TTE and TEE should be considered to define aortic valve morphology. TEE identifies an important number of patients with BAV.
authors: Secció de Cardiologia, Departament de Medicina Interna, Hospital Universitari de Sant Joan, Universitat Rovira i Virgili, C/ Sant Joan s/n, 43201 Reus, Spain. jac@fmcs.urv.es
authors: Josep M
authors: JM
authors: Alegret
authors: Oscar
authors: O
authors: Palazón
authors: Ignasi
authors: I
authors: Duran
authors: Josep M
authors: JM
authors: Vernis
mesh_terms: D001021:Aortic Valve / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D001024:Aortic Valve Stenosis / Q000000981:diagnostic imaging; D004452:Echocardiography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D015995:Prevalence; D011446:Prospective Studies