Evaluating the Outcome of Phonosurgery: Comparing the Role of VHI and VoiSS Questionnaires in the Greek Language

The Degree of Change and Relationship in Self-perceived Handicap and Acoustic Voice Quality Associated With Voice Therapy

INTRODUCTION

Outcome measures describing acoustic voice quality and self-perceived vocal handicap are commonly used in clinical voice practice. Previous reports of the relationship between acoustic and self-perceived measures have found only limited associations, but it is unclear if acoustic measures associated with voice quality and self-perceived voice handicap change in a similar manner over the course of voice treatment. The current study, therefore, considered the relationship between the degree of change in Acoustic Voice Quality Index (AVQI) and Voice Handicap Index (VHI-30 and VHI-10) in dysphonic patients receiving treatment in a private practice voice clinic.

METHODS

Data were collected retrospectively from patient records of a private practice voice clinic over 80 consecutive months. For each patient, their voice disorder diagnosis, age, and biological sex were collected as well as pre-and post-treatment measures of the AVQI and VHI-30 or VHI-10 depending on which version was used. Correlations were calculated between the AVQI and VHI-30 and the AVQI and VHI-10 before and after treatment as well as for the percentage change of AVQI and VHI-30/VHI-10. Friedman and Kruskal-Wallis tests were used to determine the pre-and post-treatment effect and group differences respectively.

RESULTS

Seventy-eight patients were included in the analyses. The scores of the AVQI (χ²[1] = 24.01, P < 0.001), VHI-30 (χ²[1] = 18.00, P < 0.001), and VHI-10 (χ²[1] = 38.35, P < 0.001) all improved significantly after treatment. However, correlations between the AVQI and VHI-30, and the AVQI and VHI-10 were all non-significant, except for a moderate correlation between the AVQI and VHI-10 before treatment (r[43] = 0.31, P = 0.04). The percentage change of the AVQI and the VHI-30/VHI-10 did not correlate significantly.

CONCLUSIONS

Voice therapy significantly improved acoustic and self-perceived vocal outcome measures. However, there was no significant relationship between these measures before or after treatment, nor was there a relationship in their degree of change. Results support the notion that VHI and AVQI measure unique constructs and that voice therapy can have a positive impact on both.

Study of Pre and Post Operative Videostroboscopic Evaluation of Benign Vocal Cord Lesions

To determine pre and postoperative vocal fold vibratory changes using videostroboscopy (VS) and effect of surgery on functional, physical and emotional levels of voice using voice handicap index (VHI). To determine correlation between VHI and VS in patients with benign vocal fold pathology. This is a prospective study done at Pushpagiri Medical College. 40 patients in the age group of 14-75 years who presented with complaints of voice change were included. VS and VHI of patients done preoperatively in 40 patients. Patients were re-evaluated postoperatively at 1 month by VHI and VS. All patients underwent microlaryngoscopic excision of the benign vocal cord lesion with biopsy under GA in the conventional manner. One month postoperatively, these patients were evaluated by VS and VHI and the findings noted. There was statistically significant improvement in the stroboscopy ratings and VHI scores post operatively (p < 0.0001). The mucosal wave was diminished or absent in 100% of the studied TVC cysts and present in approximately 60% of vocal polyps. There was no significant correlation found between preoperative VHI scores and stroboscopy ratings except for mucosal waves. Whereas there was significant correlation noted between the VHI subscales and total scores with stroboscopic scores postoperatively except for symmetry. All but 6 patients in this study benefitted from surgery and 85% had a normal voice post-operatively. Pre and post operative assessment of patients with benign vocal fold lesions by stroboscopy and VHI is a useful way to determine the degree of improvement following surgery.

Predictors of Six-month Change in the Voice Handicap Index in a Treatment-seeking Population

OBJECTIVE

To evaluate predictors of longitudinal change in patient-perceived voice impact as determined by the Voice Handicap Index (VHI).

STUDY DESIGN

Prospective, survey study.

METHODS

Patients consented to the University of Wisconsin Voice and Swallow Clinics Outcomes Database with voice, concerns with a baseline clinic visit from November 2012 to January 2014 were eligible for the study. The VHI was sent to patients 6 months post clinic visit to determine change in voice handicap from baseline. General health was screened using the 12-item Short Form Health Survey, using physical component summary and mental component summary scores. Predictor variables included treatment (medical and/or behavioral); dysphonia sub-diagnosis; grade, roughness, breathiness, asthenia, and strain rating; age; sex; socioeconomic factors; smoking history; and comorbidity score.

RESULTS

Two hundred thirty-seven patients met study criteria and were followed longitudinally. Eighty-two patients returned 6-month surveys. The VHI was significantly correlated with mental component summary scores. Patients with a higher grade in baseline grade, roughness, breathiness, asthenia, and strain score were more likely to receive voice intervention (P = 0.04). Six-month improvement in VHI score was associated with both higher initial VHI score and higher educational level in both univariate (P < 0.01, P = 0.04) and multivariate analyses (P < 0.01, P = 0.02). Voice treatment (medical and/or behavioral) was not a significant factor for improvement in VHI score.

CONCLUSIONS

Our results suggest that it is important to consider baseline self-perceived voice impact measures and educational level in setting expectations for voice treatment. Future studies examining the relationship between treatment patterns and voice-related patient outcomes are warranted.

Utility of the voice handicap index as an indicator of postthyroidectomy voice dysfunction

OBJECTIVES/HYPOTHESES

The Voice Handicap Index (VHI) is a simple, reliable, self-administered questionnaire that has been used to identify negative voice outcomes after thyroidectomy. This study provides an updated report of a multiyear study examining the predictive ability of the VHI to classify normal versus negative voice outcomes (VOs).

STUDY DESIGN

Prospective observational, longitudinal study of the patient reported impact of voice changes after thyroidectomy using the VHI. Since the preliminary report, the sample size doubled and methods for classifying voice outcomes (VOs) were refined.

METHODS

Ninety-one adults provided voice assessment data preoperatively (baseline) and at approximately 2 weeks postthyroidectomy. VO was defined according to endoscopic laryngeal examination, acoustic, auditory perceptual, and patient report parameters. The VHI was tested for its sensitivity and specificity for identifying VO.

RESULTS

Twenty-two participants (24.2%) qualified as having adverse VOs during the early postoperative period. A change from baseline in VHI of 13-16 points had a diagnostic accuracy of 86% sensitivity and 88% specificity for classifying early VO and had 70% and 95% positive and negative predictive values, respectively. The Functional and Physical subscales of the VHI had higher predictive value than the Emotional subscale. Adjunctive analyses of a two-subscale version of the VHI and of the 10 items that comprises the VHI-10 also revealed high predictive value for differentiating groups by VO.

CONCLUSIONS

Balanced sensitivity and specificity are achieved at a change in the total VHI score of 13-16. These results are generally consistent with several other studies examining voice problems over time. The VHI, as well as its alternate versions, appear to be useful and should be incorporated into the diagnostic process for identifying patients with voice problems after thyroidectomy.