[How to perform and analyze a stroboscopic examination?].
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Diagnosis, Differential↗
Biomedical subjects
L Crevier Buchman
Publications and source records attributed to L Crevier Buchman.
[Dysphonia: current methods of evaluation].
OBJECTIVES: The aim of this review article was to provide an update on current techniques for evaluation of dysphonia in routine clinical practice. MATERIALS AND METHODS: Recent medical and other scientific literature was reviewed and pertinent current theories concerning the physiology of laryngeal function described. RESULTS: Perceptual voice quality evaluation by a professional jury of listeners is still considered to be the most reliable and complete means of evaluating pathologic voice, even though it is difficult to perform in routine and the results lack reproducibility. The objective evaluation of the vocal fundamental frequency and its variations and the spectral characteristics of voice has the advantage of being simple to perform, reproducible and quantifiable. However, automatic measurements need to be analyzed with precaution for severe dysphonia, the computer algorithms being designed for voices retaining a certain periodicity. Aerodynamic measurements are quantifiable and reproducible and provide information as to the quality of laryngeal function as a transducer of aerodynamic energy into acoustic energy. Videostroboscopy and electroglottography provide information as to the quality of the laryngeal vibrations, the source of sound production. CONCLUSIONS: All of these types of analysis are complementary, informing as to different aspects of vocal quality and laryngeal function. No one measurement alone can diagnose or characterize dysphonia.
Electrodiagnosis↗
[Subjective evaluation of voice and speech after supra-cricoid partial laryngectomy].
A prospective perceptual evaluation of the voice and speech after supra-cricoid partial laryngectomy over the first post-operative six months was performed. Ten male patients were evaluated at one, three and six months by five listeners. A voice profil was drawn from defined acoustical parameters studied, and a chronology in the voice improvement was observed. Voice therapy aims could be suggested.
Aged↗
[Results of the treatment of spontaneous widening of tracheo-esophageal punctures after laryngeal implant].
Vocal rehabilitation by tracheosophageal puncture procedure and voice prosthesis was employed in a series of 68 patients (64 men and 4 women). The mean age was 68.4 years and ranged from 39 to 78 years. Enlarging tracheoesophageal fistula and leakage occurred in 31 patients. One or several conservative treatments were employed in 23 patients. Surgical closure of the tracheoesophageal fistula was performed in 5 patients (closure without muscular interposition: 3 patients, closure with sternomastoid muscle interposition: 2 patients). Leakage around the prosthesis was noted 8 days to 39 months postoperatively (mean: 11 months). Successful rates of conservative treatments were as following: prosthesis replacement with a small gauge catheter for several days followed by a prosthesis replacement: 9/17 (52.9%), replacement of prosthesis: 4/12 (33%), Gax Collagen injection: 3/9 (33%), cauterization of the tracheoesophageal tract: 0/1. Surgical closure was successful in all cases. Repuncture and prosthesis replacement was successful in one patient. Conservative treatment is initially recommended including prosthesis replacement with a small gauge catheter for several days and followed by a prosthesis replacement. Surgical treatment with muscular interposition is recommended in case of failure of conservative treatments.
Adult↗