title: Device Life of Two Generations of Provox Voice Prostheses.
abstract: BACKGROUND
  Tracheoesophageal voice prostheses are invaluable for speech rehabilitation in patients who have received total laryngectomy, but device failure impedes communication and creates psychosocial and financial burdens. This study compares the Provox 2 and Provox Vega voice prostheses on the parameter of device life.
  
  
  METHODS
  This was a retrospective observational study of 21 patients with 181 device replacements at an academic tertiary care medical center. Disparity in device life and factors that may influence device life were analyzed.
  
  
  RESULTS
  The mean device life for Provox 2, at 115.6 days (SE = 5.8), was longer than for Provox Vega, at 65.1 days (SE = 7.5) (P < .001).
  
  
  CONCLUSIONS
  Device longevity was greater for Provox 2 over Provox Vega. These results will facilitate the design of prospective studies to assess reasons for variations in device life between patients and device types.
authors.affiliation: USC Tina and Rick Caruso Department of Otolaryngology-Head & Neck Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
authors.forename: David S
authors.initials: DS
authors.lastname: Thylur
authors.affiliation: USC Tina and Rick Caruso Department of Otolaryngology-Head & Neck Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
authors.forename: Brenda Capobres
authors.initials: BC
authors.lastname: Villegas
authors.affiliation: USC Tina and Rick Caruso Department of Otolaryngology-Head & Neck Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
authors.forename: Laurel M
authors.initials: LM
authors.lastname: Fisher
authors.affiliation: USC Tina and Rick Caruso Department of Otolaryngology-Head & Neck Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
authors.forename: Uttam K
authors.initials: UK
authors.lastname: Sinha
authors.affiliation: USC Tina and Rick Caruso Department of Otolaryngology-Head & Neck Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA Niels.Kokot@med.usc.edu.
authors.forename: Niels
authors.initials: N
authors.lastname: Kokot
mesh_terms: D000046:Academic Medical Centers; D000368:Aged; D000369:Aged, 80 and over; D002357:Cartilage Diseases / Q000601:surgery; D004947:Esophagus / Q000601:surgery*; D005260:Female; D006801:Humans; D007822:Laryngeal Neoplasms / Q000601:surgery; D007825:Laryngectomy / Q000534:rehabilitation*; D007831:Larynx, Artificial; D008297:Male; D008875:Middle Aged; D011015:Pneumonia, Aspiration / Q000601:surgery; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011677:Punctures; D012008:Recurrence; D012189:Retrospective Studies; D012828:Silicones; D013070:Speech Therapy; D062606:Tertiary Care Centers; D013964:Thyroid Neoplasms / Q000556:secondary / Q000601:surgery; D014132:Trachea / Q000601:surgery*
chemical_list: D012828:Silicones
keywords: Provox 2; Provox Vega; alaryngeal speech; device life; laryngectomy; tracheoesophageal voice prosthesis