Long-term effects of an intensive voice treatment for vocal fold nodules

Efficacy of Long-Term Intensive Straw Phonation Exercise in Air for Hyperfunctional Voice Disorders: A Preliminary Study

PURPOSE

Literature highlights the efficacy of prolonged use of straw phonation for vocally healthy individuals. Nevertheless, minimal studies have examined the prolonged use of single treatment in hyperfunctional voice disorders (HFVD), as straw phonation is used as physiological training to improve voice quality in these individuals. The present study aimed to investigate the long-term intensive training effect of straw phonation exercise in air (SPEA) for HFVD.

METHOD

In a time series design, seven females with HFVD (mean age 42.28years) participated in SPEA for 12 long sessions (30 minutes/session) intensively trained for 3weeks (4days/week). The participant-recorded voice samples were analyzed for aerodynamic measures Aerodynamic Subglottic Pressure (ASP), Airflow Rate (AFR), glottal behavior measures Contact Quotient (CQ), Contact Quotient Range (CQR), acoustic measure Acoustic Voice Quality Index (AVQI), auditory-perceptual Consensus Auditory Perceptual Evaluation of Voice - Kannada (CAPE-V-K), and self-perceptual measure Voice Handicap Index - Kannada (VHI-K) at pre-therapy, mid-therapy, post therapy, and 1-month follow-up timelines. Related Friedman's two-way analysis of variance and post hoc Wilcoxon signed-rank test were used to analyze the change in outcome measures across therapy timelines.

RESULTS

Significant reduction in ASP, CQR, AVQI, CAPE-V-K, and VHI-K measures from pre-therapy to post-therapy and follow-up timelines was observed. Although there was a decrease in AFR and CQ measures from pre therapy to post therapy and follow-up, no significant differences were observed. No significant changes were observed from pre therapy to mid-therapy in any outcome measures, indicating the need for extended therapy duration and regular practice.

CONCLUSION

These findings provide preliminary evidence of implementing the long-term intensive training of SPEA for HFVD with the support of significant outcome measures at various therapy timelines.

Initial Theoretical Discussion of Identity as Barrier and Facilitator in Voice Habilitation and Rehabilitation

OBJECTIVES

The purpose of this paper is to review seminal identity theories grounded in social psychology and one concept from voice science and explain how this group may point to identity factors facilitating or impeding voice habilitation and rehabilitation.

METHODS

Identity theories from the social psychology literature (Dramaturgical Theory, Self-Categorization Theory, Self-Determination Theory, Identity Negotiation Theory) and vocal congruence are described. Concepts are synthesized with voice science research to explore potential identity-behavior relations at play in voice habilitation and rehabilitation.

RESULTS

Applicable concepts from social psychology and voice science suggest identity-related processes by which a client may or may not develop a voice difference/disorder, seek intervention, and achieve goals in intervention. A bidirectional relationship between identity and behavior has been well-established in the social psychology literature. However, the relevance of vocal behavior has yet to be formally examined within this literature. Importantly, although connections between behavioral tendencies and voice disorders as well as the contribution of identity to gender-affirming voice treatment have been established in the voice science literature, the consideration of identity's possible role in voice habilitation and rehabilitation in cis gender individuals has thus far been scant.

CONCLUSIONS

Research into identity and voice habilitation and rehabilitation may help to improve voice intervention outcomes. A possible adjunct to human studies is agent-based modeling or other computational approaches to assess the myriad factors that may be relevant within this line of inquiry.

The Experiences of Trans and Gender Diverse Clients in an Intensive Voice Training Program: A Mixed-Methodological Study

Intensive schedules in behavioral voice therapy and training have been proposed to have a range of positive benefits including enhanced outcomes, high client and clinician satisfaction, and reduced client attrition. In the sub-field of behavioral voice training for trans and gender diverse clients, intensive schedules may also present a means of increasing service access opportunities for a vulnerable population. Despite the proposed benefits there has been limited research investigating client experiences in intensive voice training programs. The current study utilized a mixed-methodological approach to compare participant experiences in an intensively scheduled (three 45-minute sessions per week, over 4 weeks) versus a traditionally scheduled (one 45-minute session per week, over 12 weeks) voice training program for trans and gender diverse participants aiming to develop a perceptually feminine-sounding voice. Participant experiences were compared using a satisfaction questionnaire delivered to both training groups as well as thematic analysis of semi-structured interviews conducted with participants in the intensive group. Results suggested that individuals in the intensive training program had both positive and negative experiences related to the intensive schedule, but all viewed the program favorably and expressed a preference for intensive training based on their experiences. However, it was also found that overall satisfaction and attrition did not differ significantly between the intensive and traditional training groups and that many factors contributing to participant satisfaction in the intensive program were unrelated to the intensive schedule. Results from the current study also suggest that experiences in intensive programs may be highly variable and mediated by factors such as clients' individual personalities and preferences. The current study concludes that intensive schedules present a viable alternative to traditional schedules in practice, with additional considerations and directions for future research also discussed.

Pediatric Voice Handicap Index (pVHI): A Tool for Evaluating the Reliability and Validity of Voice Therapy in Children With Benign Vocal Fold Nodules

OBJECTIVES

benign vocal fold lesions (BVFLs) represent the most common etiology of voice disorders in paediatric population, cause of dysphonia by preventing full vocal fold closure and modifying vibratory characteristics. Of those pathologies, vocal fold nodules represent almost 63% of the cases in children between 0-14 years. Management may include a combination of phonosurgery, voice therapy and pharmacological treatment, but almost 95% of otolaryngologists recommend voice therapy as primary treatment. The Pediatric Voice Handicap Index (pVHI) is nowadays widely used and accepted in the evaluation and monitoring of paediatric patients with dysphonia. The aim of our study was to demonstrate the reliability and validity of PVHI in the evaluation of the effects of voice therapy as treatment of vocal fold nodules in the paediatric population.

PATIENTS AND METHOD

in this retrospective chart review twenty-seven (27) dysphonic patients with bilateral vocal fold nodules were treated with behavioral voice therapy approaches, and the PVHI surveys was administered to each patient parent's before and after therapy. The age of the patients ranged from 4 to 14 years (mean age 8.7 y-o); 17 (63%) were male and 10 (37%) females.

RESULTS

according to our results, behavioral voice therapy effectively improved pVHI scores from pre- to post-treatment in paediatric patients with bilateral vocal fold nodules.

Effectiveness of Intensive Voice Therapy Versus Weekly Therapy for Muscle Tension Dysphonia: A Noninferiority Randomised Controlled Trial With Nested Focus Group

OBJECTIVES

To investigate the noninferiority of intensive voice therapy and compare its effects with weekly voice therapy on multidimensional outcomes of voice and well-being, satisfaction, and attendance in people with muscle tension dysphonia (MTD). The study further aimed to explore clinician's perceptions of barriers and enablers to implementation of intensive therapy.

STUDY DESIGN

Noninferiority randomised controlled trial with nested focus group.

METHODS

Twenty adults with MTD were randomised to receive either weekly voice therapy (1 hour per week for 8 weeks) or intensive voice therapy (1 hour, 4 days per week for 2 weeks). Participants were assessed by a blinded assessor twice before treatment, once post treatment and once at 4 weeks follow up on the primary outcome measure VHI and a range of secondary auditory-perceptual, acoustic, and patient (i.e., VoiSS, satisfaction) and clinician reported outcome measures (i.e., AusTOMs, attendance rates). Five Speech Language Pathologists also participated in a focus group to explore barriers and enablers to implementing intensive therapy, with questions and analyses guided by the Theoretical Domains Framework.

RESULTS

While noninferiority for the primary outcome measure VHI was not confirmed, secondary outcome measures revealed comparable within group clinically important improvements for VoiSS and the AusTOMs, as well as selected acoustic and auditory-perceptual measures for both groups. A trend of more improvements being maintained in the intensive group was identified. Comparably high satisfaction and attendance was also found between groups. Clinicians reported more enablers than barriers to providing intensive therapy which included beliefs that it led to greater progression and consolidation of patient learning, was supported by the local context and was associated with positive emotions. Barriers related to difficulties with booking and scheduling and the belief that intensive therapy was not for all patients.

CONCLUSIONS

While the current study was likely underpowered to establish non-inferiority of intensive therapy, secondary outcomes suggested that intensive therapy may produce comparable benefits to voice, wellbeing, satisfaction and attendance compared to weekly therapy and may be a viable therapy option for individuals with MTD. When implementing intensive therapy, clinicians should consider patient's preferences and availability, as well as systems which allow for flexible booking and therapy provision for patients. Clear recommendations for future research including the use of a larger sample and telehealth are also provided.

Effectiveness of voice therapy in patients with vocal fold nodules: a systematic search and narrative review

BACKGROUND/OBJECTIVE

An adult with vocal fold nodules can suffer from hoarseness, breathiness and vocal fatigue, which, in turn, significantly affects their vocal participation as well as activities. A well-designed voice therapy program improves the quality of life and vocal functionality. This is a narrative review with a systematic search of the current literature about the effectiveness of voice therapy interventions in adults with vocal fold nodules.

METHODS

Several key terms were used for the database electronic search of articles. Strict inclusion criteria were used and a broad evaluation of the studies was performed. This included the level of evidence based on the National Health and Medical Research Council levels of evidence, assessment, and critical appraisal.

RESULTS

Nine out of 30 reviewed articles met the criteria of inclusion and reported positive effects of voice therapy intervention on adult patients with vocal fold nodules. The vast majority of the reviewed studies reported multidimensional voice measures outcome data, most of them containing visual-perceptual, auditory-perceptual, acoustic and self-assessment results. Regardless of receiving direct or indirect or a combination of both voice therapy contents, nearly all voice quality parameters were found to improve after treatment. Short-term treatment (< 3 weeks) may be as beneficial as longer traditional voice therapy programs, and using telepractice voice therapy may be an achievable and practical way of delivering treatment and enhance adherence to therapy. The study design and the evidence levels of the included studies were low (≤ III-2) and the risk of bias of the comparative studies was moderate.

CONCLUSION

This narrative review cannot conclude the general effectiveness of voice therapy programs. Further research and understanding of what specific parameters (exercise and techniques) of a therapy's content will improve voice outcome measures. More studies are required to investigate whether or not voice therapy benefits are sustainable 6 months after ending the therapy. However, improved evidence is required to suggest that short period treatments are as beneficial as traditional therapy programs. Telepractice voice therapy may be an achievable and practical way of delivering treatment and enhance adherence to therapy.

Management of benign vocal fold lesions: current perspectives on the role for voice therapy

PURPOSE OF REVIEW

Benign vocal fold lesions (BVFLs) cause dysphonia by preventing full vocal fold closure, interrupting vibratory characteristics and increasing compensatory muscle tension. Management includes phonosurgery, voice therapy, pharmacological treatment or more commonly a combination of these interventions. This review aims to present current perspectives on the management of BVFLs, particularly exploring the role of voice therapy.

RECENT FINDINGS

The review highlights variation in the management of BVFLs. There is evidence that phonosurgery is a well tolerated and effective intervention for BVFLs. Primary voice therapy can frequently prevent surgery in vocal fold nodules and some types of polyps. Used as an adjunct to phonosurgery, preoperative and postoperative voice therapy can improve patient-reported outcomes and acoustic parameters of the voice. However, heterogeneity of studies and poor descriptions of intervention components prevent a robust analysis of the impact of voice therapy.

SUMMARY

The current evidence consists of low-level studies using mixed aetiology groups, which compromises internal and external validity. There are a few exceptions to this. Poor reporting and heterogeneous methodologies lead to difficulties determining the components of a voice therapy intervention for this population. Consequently, we are unable to evaluate, which intervention elements are beneficial to patients.

Impact of Remnant Nodules on Immediate and Long-term Outcomes of Voice Therapy for Vocal Fold Nodules

OBJECTIVES

In this study, we aimed to assess whether remnant vocal fold nodules (VFN) influence immediate and long-term voice outcomes after voice therapy.

STUDY DESIGN

This is a retrospective cohort study evaluating immediate and long-term voice outcomes.

METHODS

Twenty-five adult patients with VFN who completed voice therapy were included in this study. Patients were classified into remnant (n = 18) and nonremnant (n = 7) groups according to the presence of remnant nodules immediately after completion of voice therapy. Acoustic and perceptual parameters, as well as voice handicap index (VHI), were compared between groups immediately (immediate outcome) and more than 3 months (long-term outcome) after completion of voice therapy.

RESULTS

Immediately after voice therapy, there were no significant differences between groups in grade-roughness-breathiness-asthenia-strain (GRBAS) score, jitter, shimmer, noise-to-harmonics ratio, voice range profile, or s/z ratio. Postvoice therapy VHI scores did not significantly differ between the two groups (9.29 ± 8.94 in the nonremnant group vs. 12.78 ± 9.01 in the remnant group, P = 0.392). The overall GRBAS grade of all patients was maintained at 0 or 1 during long-term follow-up. There was no significant difference between the long-term VHI scores of the remnant group (10.00 ± 8.58) and the nonremnant group (5.67 ± 8.71) (P = 0.306).

CONCLUSIONS

Immediately after voice therapy, perceptual scores, acoustic parameters, and VHI scores all significantly improved regardless of presence of remnant nodules. Favorable outcomes of voice therapy were maintained during long-term follow-up regardless of presence of remnant nodules after voice therapy.

Vocal nodules management

Vocal fold nodules present the voice clinic team with a number of clinical dilemmas which are not as simple as previously thought. The definition, aetiology, prevalence and diagnosis are all poorly understood. Furthermore, treatment evidence for both behavioural and surgical approaches is weak. This paper reviews the published evidence pertaining to all of these aspects. Specific areas of uncertainty that remain include poorly defined nomenclature, the natural history of paediatric vocal nodules, the establishment of criteria to measure successful treatment, optimal configuration of speech therapy regimens and the rationale for surgical intervention. The authors suggest the development of evidence-based guidelines for UK practice.