title: Radiation dose of patients undergoing transcatheter aortic valve implantation: a comparison between Edwards SAPIEN XT and Medtronic CoreValve aortic valve prostheses.
abstract: BACKGROUND
  The relative radiation dose (RD) of patients undergoing transcatheter aortic valve implantation (TAVI) with either the Edwards Sapien XT (ESX) or the Medtronic CoreValve (MCV) prostheses has not been studied in depth. Our aim was to quantify RD in uncomplicated transfemoral TAVI with either prosthesis.
  
  
  METHODS
  We analyzed 248 consecutive patients undergoing uncomplicated transfemoral TAVI between March 2009 and September 2012, at a single tertiary care facility. Total air Kerma, cumulated dose area product (DAP), and fluoroscopy time were determined in each case.
  
  
  RESULTS
  The ESX and MCV prostheses were implanted in 44 and 204 patients, respectively. Though mean fluoroscopy time was higher during ESX valve implantation, overall RD per total air Kerma and DAP was significantly higher during MCV implantation (P < 0.05 for both comparisons). By multivariate regression analyses, prosthesis type was an independent predictor of RD according to both total air Kerma and DAP (r(2) = 0. 498; P < 0.01 and r(2) = 0.363; P < 0.01, respectively).
  
  
  CONCLUSIONS
  In uncomplicated transfemoral TAVI, RD is greater during MCV implantation than during ESX implantation.
authors.affiliation: Department of Cardiology, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel.
authors.forename: Arie
authors.initials: A
authors.lastname: Steinvil
authors.forename: Galit
authors.initials: G
authors.lastname: Aviram
authors.forename: Maayan
authors.initials: M
authors.lastname: Konigstein
authors.forename: Yigal
authors.initials: Y
authors.lastname: Abramowitz
authors.forename: Amir
authors.initials: A
authors.lastname: Halkin
authors.forename: Yaron
authors.initials: Y
authors.lastname: Arbel
authors.forename: Yanai
authors.initials: Y
authors.lastname: Ben-Gal
authors.forename: Gad
authors.initials: G
authors.lastname: Keren
authors.forename: Shmuel
authors.initials: S
authors.lastname: Banai
authors.forename: Ariel
authors.initials: A
authors.lastname: Finkelstein
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001021:Aortic Valve / Q000000981:diagnostic imaging*; D001024:Aortic Valve Stenosis / Q000000981:diagnostic imaging / Q000628:therapy*; D006328:Cardiac Catheterization / Q000295:instrumentation*; D016009:Chi-Square Distribution; D005260:Female; D005263:Femoral Artery / Q000000981:diagnostic imaging*; D005471:Fluoroscopy; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000295:instrumentation* / Q000379:methods; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D011474:Prosthesis Design; D011829:Radiation Dosage; D011834:Radiation Monitoring; D015641:Radiography, Interventional / Q000009:adverse effects; D012307:Risk Factors; D016896:Treatment Outcome
keywords: dose area product; fluoroscopy; total Air Kerma; transcatheter aortic valve implantation