title: [General anesthesia for thyroplasty employing voice test].
abstract: BACKGROUND
  We reported an anesthetic technique for thyroplasty employing voice test. Thyroplasty is performed to improve voice quality in patients with unilateral vocal cord paralysis. Correct displacement of the vocal cord is assessed by asking the patient to phonate. At this point all patients should have recovered from general anesthesia and cooperate to phonation, facilitating correct displacement of the vocal cords.
  
  
  METHODS
  Anesthesia was induced with i.v. pentazocine 15-30 mg and continuous propofol infusion 10 mg x kg(-1) x hr(-1). The patients received propofol infusion 4-6 mg x kg(-1) x hr(-1) with spontaneous ventilation. At the point of correct displacement of the vocal cords, we stopped propofol infusion and all the patients woke up immediately and cooperated. After determining the voice propofol was given at a rate of 4-6 mg x kg(-1) x hr(-1).
  
  
  RESULTS
  The average times of surgery and anesthesia were 98 +/- 23 min and 139 +/- 22 min, respectively. At the point of correct displacement of the vocal cords, the average time from the end of propofol infusion until awakening with good quality of recovery was 313 +/- 93 sec. No patients complained of pain during or after
  
  
  CONCLUSIONS
  This anesthetic technique provided both optimal operating conditions and patient comfort without serious complications.
authors.affiliation: Department of Anesthesia, Tokyo Medical University, Hachioji Medical Center.
authors.forename: Takao
authors.initials: T
authors.lastname: Muto
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Nakamura
authors.forename: Takeshi
authors.initials: T
authors.lastname: Sagara
authors.forename: Takayasu
authors.initials: T
authors.lastname: Kakinuma
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Sogabe
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Uchino
authors.forename: Yukihiko
authors.initials: Y
authors.lastname: Ogihara
authors.forename: Nagao
authors.initials: N
authors.lastname: Ishii
mesh_terms: D000368:Aged; D018686:Anesthetics, Intravenous / Q000008:administration & dosage; D005260:Female; D006801:Humans; D007432:Intraoperative Period; D007830:Larynx / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D008991:Monitoring, Physiologic / Q000379:methods*; D010699:Phonation; D015742:Propofol / Q000008:administration & dosage; D014826:Vocal Cord Paralysis / Q000601:surgery*
chemical_list: D018686:Anesthetics, Intravenous; D015742:Propofol