title: [Transcatheter aortic valve implantation for aortic stenosis. Initial experience].
abstract: BACKGROUND
  Aortic stenosis is a frequent disease in the elderly, and is associated with other systemic pathologies that may contraindicate the surgical procedure. Another option for these patients is percutaneous aortic valve implantation, which is less invasive. We present our initial experience with this procedure.
  
  
  METHODS
  Patients with aortic stenosis were included once selection criteria were accomplished. Under general anaesthesia and echocardiographic and fluosocopic control, a transcatheter aortic valve was implanted following s valvuloplasty. Once concluded the procedure, angiographic and pressure control was realized in order to confirm the valve function.
  
  
  RESULTS
  Between November 2014 and May 2015, 6 patients were treated (4 males and 2 females), with a mean age of 78.83±5.66 years-old. The preoperative transvalvular gradient was 90.16±28.53mmHg and posterior to valve implant was 3.33±2.92mmHg (P<.05). Two patients had concomitant coronary artery disease which had been treated previously. One patient presented with acute right coronary artery occlusion which was immediately treated. However due to previous renal failure, postoperative sepsis and respiratory failure, the patient died one month later.
  
  
  CONCLUSIONS
  It was concluded that our preliminary results showed that in selected patients percutaneous aortic valve implantation is a safe procedure with clinical improvement for treated patients.
authors.affiliation: Dirección General, Unidad Médica de Alta Especialidad, Hospital General Dr. Gaudencio González Garza, Centro Médico Nacional La Raza, Instituto Mexicano del Seguro Social, Ciudad de México, México. Electronic address: gcareaga3@gmail.com.
authors.forename: Guillermo
authors.initials: G
authors.lastname: Careaga-Reyna
authors.affiliation: Unidad Médica de Alta Especialidad, Departamento de Hemodinamia y Terapia Endovascular, Hospital General Dr. Gaudencio González Garza, Centro Médico Nacional La Raza, Instituto Mexicano del Seguro Social, Ciudad de México, México.
authors.forename: José Luis
authors.initials: JL
authors.lastname: Lázaro-Castillo
authors.affiliation: Unidad Médica de Alta Especialidad, Departamento de Cirugía Cardiotorácica, Hospital General Dr. Gaudencio González Garza, Centro Médico Nacional La Raza, Instituto Mexicano del Seguro Social, Ciudad de México, México.
authors.forename: Carlos Alberto
authors.initials: CA
authors.lastname: Lezama-Urtecho
authors.affiliation: Unidad Médica de Alta Especialidad, Departamento de Anestesiología, Hospital General Dr. Gaudencio González Garza, Centro Médico Nacional La Raza, Instituto Mexicano del Seguro Social, Ciudad de México, México.
authors.forename: Enriqueta
authors.initials: E
authors.lastname: Macías-Miranda
authors.affiliation: Unidad Médica de Alta Especialidad, Departamento de Anestesiología, Hospital General Dr. Gaudencio González Garza, Centro Médico Nacional La Raza, Instituto Mexicano del Seguro Social, Ciudad de México, México.
authors.forename: Juan José
authors.initials: JJ
authors.lastname: Dosta-Herrera
authors.affiliation: Unidad Médica de Alta Especialidad, Departamento de Cirugía Cardiotorácica, Hospital General Dr. Gaudencio González Garza, Centro Médico Nacional La Raza, Instituto Mexicano del Seguro Social, Ciudad de México, México.
authors.forename: José
authors.initials: J
authors.lastname: Galván Díaz
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001024:Aortic Valve Stenosis / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D018579:Patient Selection; D015642:Radiology, Interventional; D012189:Retrospective Studies; D065467:Transcatheter Aortic Valve Replacement / Q000706:statistics & numerical data; D016896:Treatment Outcome
keywords: Aortic stenosis; Estenosis aórtica; Percutaneous aortic valve; Prótesis valvular; Transcatheter valve; Valvular prosthesis; Válvula aórtica percutánea; Válvula transcatéter