Tags

Type your tag names separated by a space and hit enter

Correlating voice handicap index and quantitative videostroboscopy following injection laryngoplasty for unilateral vocal paralysis.
Otolaryngol Head Neck Surg. 2010 Aug; 143(2):190-7.OH

Abstract

OBJECTIVE

1) Determine the correlation between voice handicap index and quantitative videostroboscopy for patients undergoing injection laryngoplasty for unilateral vocal paralysis; 2) assess which videostroboscopy measurements correlate best with voice handicap index in patients demonstrating progressive improvement beyond six months following injection laryngoplasty.

STUDY DESIGN

Case series with chart review.

SETTING

Patients undergoing outpatient injection laryngoplasty with hyaluronic acid between 2005 and 2007.

SUBJECTS AND METHODS

Twenty-eight patients were assessed preoperatively and postoperatively using voice handicap index and videostroboscopy. Various videostroboscopy measurements were quantified: glottic open area (ratio of open to total glottic area during closed phase of phonation), glottic closed phase (frame ratio of closed phase to total glottic cycle), supraglottic compression (percent encroachment of supraglottis onto best-fit ellipse around glottis), wave amplitude (difference in glottic open area between open and closed phases), and wave duration (number of frames per glottic cycle). Correlation coefficients were calculated using Spearman's r.

RESULTS

One hundred seventeen separate recordings were analyzed. Correlation coefficients between voice handicap index (normalized to preoperative values) and glottic closed phase showed moderate-strong correlation (r = -0.733, P < 0.001), while glottic open area and wave duration showed weak-moderate correlation (r = 0.465, P < 0.001 and r = -0.404, P < 0.001 respectively). Other parameters showed poor correlation. A subset of 25 recordings from eight patients with progressive voice handicap index improvement beyond six months showed highest correlation with supraglottic compression (r = 0.504, P < 0.05).

CONCLUSION

Voice handicap index correlates best with glottic closed phase, suggesting duration of vocal fold closure during the glottic cycle best represents patients' subjective outcome post-procedure. Progressive improvement in voice handicap index beyond six months may relate to gradual reduction in compensatory supraglottic compression, with moderate correlation.

Authors+Show Affiliations

Department of Otolaryngology, Singapore General Hospital, Singapore.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

20647118

Citation

Lau, David Pang Cheng, et al. "Correlating Voice Handicap Index and Quantitative Videostroboscopy Following Injection Laryngoplasty for Unilateral Vocal Paralysis." Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery, vol. 143, no. 2, 2010, pp. 190-7.
Lau DP, Zhang EZ, Wong SM, et al. Correlating voice handicap index and quantitative videostroboscopy following injection laryngoplasty for unilateral vocal paralysis. Otolaryngol Head Neck Surg. 2010;143(2):190-7.
Lau, D. P., Zhang, E. Z., Wong, S. M., Lee, G., & Chan, Y. H. (2010). Correlating voice handicap index and quantitative videostroboscopy following injection laryngoplasty for unilateral vocal paralysis. Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery, 143(2), 190-7. https://doi.org/10.1016/j.otohns.2010.03.011
Lau DP, et al. Correlating Voice Handicap Index and Quantitative Videostroboscopy Following Injection Laryngoplasty for Unilateral Vocal Paralysis. Otolaryngol Head Neck Surg. 2010;143(2):190-7. PubMed PMID: 20647118.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Correlating voice handicap index and quantitative videostroboscopy following injection laryngoplasty for unilateral vocal paralysis. AU - Lau,David Pang Cheng, AU - Zhang,Edward Zhiyong, AU - Wong,Seng Mun, AU - Lee,Gwyneth, AU - Chan,Yiong Huak, PY - 2009/09/24/received PY - 2010/02/22/revised PY - 2010/03/08/accepted PY - 2010/7/22/entrez PY - 2010/7/22/pubmed PY - 2010/8/13/medline SP - 190 EP - 7 JF - Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery JO - Otolaryngol Head Neck Surg VL - 143 IS - 2 N2 - OBJECTIVE: 1) Determine the correlation between voice handicap index and quantitative videostroboscopy for patients undergoing injection laryngoplasty for unilateral vocal paralysis; 2) assess which videostroboscopy measurements correlate best with voice handicap index in patients demonstrating progressive improvement beyond six months following injection laryngoplasty. STUDY DESIGN: Case series with chart review. SETTING: Patients undergoing outpatient injection laryngoplasty with hyaluronic acid between 2005 and 2007. SUBJECTS AND METHODS: Twenty-eight patients were assessed preoperatively and postoperatively using voice handicap index and videostroboscopy. Various videostroboscopy measurements were quantified: glottic open area (ratio of open to total glottic area during closed phase of phonation), glottic closed phase (frame ratio of closed phase to total glottic cycle), supraglottic compression (percent encroachment of supraglottis onto best-fit ellipse around glottis), wave amplitude (difference in glottic open area between open and closed phases), and wave duration (number of frames per glottic cycle). Correlation coefficients were calculated using Spearman's r. RESULTS: One hundred seventeen separate recordings were analyzed. Correlation coefficients between voice handicap index (normalized to preoperative values) and glottic closed phase showed moderate-strong correlation (r = -0.733, P < 0.001), while glottic open area and wave duration showed weak-moderate correlation (r = 0.465, P < 0.001 and r = -0.404, P < 0.001 respectively). Other parameters showed poor correlation. A subset of 25 recordings from eight patients with progressive voice handicap index improvement beyond six months showed highest correlation with supraglottic compression (r = 0.504, P < 0.05). CONCLUSION: Voice handicap index correlates best with glottic closed phase, suggesting duration of vocal fold closure during the glottic cycle best represents patients' subjective outcome post-procedure. Progressive improvement in voice handicap index beyond six months may relate to gradual reduction in compensatory supraglottic compression, with moderate correlation. SN - 1097-6817 UR - https://www.unboundmedicine.com/medline/citation/20647118/Correlating_voice_handicap_index_and_quantitative_videostroboscopy_following_injection_laryngoplasty_for_unilateral_vocal_paralysis_ L2 - http://journals.sagepub.com/doi/full/10.1016/j.otohns.2010.03.011?url_ver=Z39.88-2003&amp;rfr_id=ori:rid:crossref.org&amp;rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -