title: [Echocardiography guided coated stent-graft implantation for patients with Stanford B aortic dissection].
abstract: OBJECTIVE
  To evaluate the feasibility, safety and efficacy of transesophageal echocardiography (TEE) and transthoracic echocardiography (TTE) guided coated stent-graft implantation for patients with Stanford B aortic dissection.
  
  
  METHODS
  In 5 patients with CT confirmed Stanford B aortic dissection, TEE and TTE were used to determine the parameters for pre-surgery diagnosis and selection of suitable coated stent. During surgery, TEE and TTE provided real-time and dynamic monitoring and guiding for precise implantation of the coated stent to effectively seal the tear of the aortic dissection. After surgery, efficacy of implanted coated stent was evaluated by TTE.
  
  
  RESULTS
  In all 5 patients, the coated stents were successfully implanted in the true lumen, a small distal tear was not covered in 1 case. Displacement of stent-graft or new endoleak was not observed at follow-up examinations performed at 3 months post-surgery. There were no aortic perforation, renal failure, paraplegia or other complications. The medians of left ventricular ejection fraction (LVEF) in 2 days before surgery, 1 month post-surgery and 3 months post-surgery are 59.9%, 67.4% and 68.1% and the medians of fraction shortening (FS) are 31.4%, 33.7% and 39.1%. Compared with 2 days before surgery, significant increase of LVEF and FS was observed in 1 month post-surgery and 3 months post-surgery (all P < 0.05).
  
  
  CONCLUSIONS
  Our results showed that echocardiography guided coated stent-graft implantation for patients with Stanford B aortic dissection was safe and effective with lower risk of complications.
authors.affiliation: Department of Echocardiography, Institute of Cardiovascular Research, Second Xiangya Hospital, Central South University, Changsha 410011, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Gao
authors.forename: Yi-feng
authors.initials: YF
authors.lastname: Yang
authors.forename: Qin
authors.initials: Q
authors.lastname: Wu
authors.forename: Hao
authors.initials: H
authors.lastname: Tang
authors.forename: Xin-hua
authors.initials: XH
authors.lastname: Xu
mesh_terms: D000368:Aged; D000784:Aortic Dissection / Q000000981:diagnostic imaging* / Q000601:surgery*; D019917:Blood Vessel Prosthesis Implantation / Q000379:methods*; D004452:Echocardiography; D017548:Echocardiography, Transesophageal; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015607:Stents