Instrumental Assessment of Aero-Resistive Expiratory Muscle Strength Rehabilitation Devices.

PURPOSE: Expiratory muscle strength training (EMST) is increasingly being used to treat voice, cough, and swallowing deficits in a wide range of conditions. However, a multitude of aero-resistive EMST models are commercially available, and the absence of side-by-side comparative data interferes with clinicians' ability to assess which model is best suited to a particular client's needs. The primary aim of this research was to test and compare the pressure and flow parameters of six currently available EMST models to help inform clinical decision making. METHOD: We identified and tested five devices of each of six different EMST models to generate benchmark data for minimum trigger pressures across settings. The reliability was tested within each device and between five devices of the same model across settings using coefficient of variation. RESULTS: All six models required higher pressures to initiate flow at the highest setting compared to the lowest setting, as expected. Detailed descriptive statistics for each model/setting combination include average flow-triggering pressure for each model/setting and the variability across trials within a device and across devices of the same model. From these, ranked order of the least to most stable EMST model was derived. CONCLUSIONS: Systematic testing of several commercially available expiratory resistance training devices yielded clinical benchmarks and reliability data to aid clinicians in selecting an appropriate therapy device and regimen for a client based on their available airflow and air pressure as well as reliability of the device. These findings allow clinicians to directly compare key parameters across EMST devices.

Cervical Vestibular-Evoked Myogenic Potentials in Individuals with Diabetes Mellitus: A Systematic Review and Meta-Analysis.

Vestibular evoked myogenic potentials (VEMPs) in individuals with diabetes mellitus (DM) provide evidence as how diabetes can bring about changes in the peripheral nervous system. Cervical VEMP (cVEMP) evaluates the function and integrity of the sacullo- collic pathway and ocular VEMP (oVEMP) evaluates the utriculo-collic pathway. cVEMP is an ipsilateral inhibitory response of the sternocleidomastoid muscle. cVEMP is recorded at higher intensity above 80-85 dBnHL with biphasic waveforms having initial peak positivity P13 followed by a negativity N23. We performed a systematic review following the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines to evaluate cVEMP in diabetes mellitus. The search was conducted in the databases: PubMed, Cumulative Index of Nursing and Allied Health Literature, Scopus, and Cochrane library using the keywords "diabetes mellitus" and "vestibular evoked myogenic potential" or "cVEMP." A two-phase selection process was used for the final inclusion of studies, and the methodological quality of these studies was assessed using the Newcastle Ottawa scale (NCOS). Meta-analysis was performed using a random-effects model. For comparisons between DM and healthy controls, a significant difference was observed for cVEMP amplitude (P = 0.01). Our meta-analysis's results suggest peripheral vestibular dysfunction can be observed in DM. It appears that cVEMPs may be useful in the early detection of neuropathy in DM.

Videofluoroscopy Practice in India: A Survey of Speech-Language Pathologists.

Owing to differences in clinical approaches toward videofluoroscopic swallowing studies (VFSS), professional and governing bodies in some countries have implemented guidelines for performing VFSS. However, in India, the establishment of such practice guidelines is in initial stages of acceptance and there are no uniform guidelines. The aim of the current study was to investigate and describe the clinical practice patterns related to VFSS assessments among Speech-Language Pathologists (SLPs) in India. An electronic survey consisting of 34 questions categorized into four main sections (demographic details and education; current practice; instrumental and technical considerations; protocol and assessment methods) was sent to SLPs registered with the Indian Speech and Hearing Association (ISHA) through email and social media from August 2020 to January 2021. A total of 129 eligible responses were received. More than 50% of the participants used a standard assessment and analysis protocol. Barium and water-soluble contrasts were mostly used, and 97% of participants did not know what percent weight to volume (w/v) or volume to volume (v/v) contrast to fluid were used. Considerable amount of variability was observed in the responses of our participants, which was consistent with international surveys of VFSS practice patterns. Lack of adequate radiation safety measures was also observed. Our findings suggest a need to increase awareness and training among Indian SLPs in technical and procedural aspects of VFSS, and more sensitization toward radiation safety. ISHA should consider forming a committee to develop and adopt uniform nationwide practices in VFSS. Future studies exclusively investigating barriers and facilitators to VFSS practice in the Indian scenario are necessary.

Systematic Review and Meta-Analysis of Dysphagia and Associated Pneumonia in Patients With Stroke From India: A Call to Arms.

OBJECTIVES: This study aimed to determine the prevalence of reported dysphagia and associated pneumonia risk among patients with stroke in India. METHOD: We carried out a systematic review following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. The primary outcome of interest was dysphagia and pneumonia among patients with stroke in India. Two review authors independently assessed the quality of studies using the Newcastle-Ottawa Scale and extracted related data. Meta-analysis was performed for frequency of dysphagia, associated pneumonia, and its relative risk using a random-effects model. Statistical heterogeneity was computed using the I2 index. RESULTS: A total of 3,644 titles were screened, and only eight studies met our inclusion criteria. Based on data from these studies, we calculated the pooled prevalence of dysphagia (47.71%; 95% confidence interval [CI] [20.49%, 70.92%], p < .001) and pneumonia (20.43%; 95% CI [10.73%, 30.14%], p < .001) for patients with stroke in India. We found that the relative risks of pneumonia in patients with stroke and dysphagia versus those patients with stroke and no dysphagia was 9.41 (95% CI [5.60, 15.80], p < .001). Data on length of hospital stay and rates of mortality secondary to pneumonia are also presented. CONCLUSIONS: Despite the high incidence of dysphagia and associated pneumonia, the methodological quality of studies is fair and there is little research focused on epidemiological data. We call to arms to those SLPs working with patients with stroke in India to become proactive in both clinical practice and research domains. Supplemental Material https://doi.org/10.23641/asha.17701022.

Validation and Psychometric Evaluation of the Kannada Version of the Speech Handicap Index in Individuals with Oral and Oropharyngeal Cancer.

The current study aimed to adapt and validate the speech handicap index into the Kannada language, and also to investigate its psychometric properties in Kannada speaking individuals with oral and oropharyngeal cancers. This is a cross-sectional study and it was carried out in two phases. The first phase dealt with the translation of the English version of SHI into the Kannada language, and its validation on 95 healthy individuals and 25 individuals with oral or oropharyngeal cancer. The second phase dealt with the investigation of speech-related quality of life among 50 Kannada speaking individuals with oral and oropharyngeal cancers. The SHI-K has very good internal consistency (Cronbach's Alpha is 0.98) and exhibited good test-retest reliability (ICC = 0.94). The mean scores of the disordered group, for the psychosocial scores (t (118) = 25.87, p < 0.01), for speech scores (t (118) = 19.74, p < 0.01), for total SHI scores (t (188) = 26.45, p < 0.01), for overall rating (t (118) = 16.81, p < 0.01) were statistically significant and greater than the healthy group (p < 0.01). A statistically significant association was found between clinical-stage, total SHI scores, and rating [χ2 (4, N = 50) = 3.82, p = 0.02], but not for sex, tumor site, and type of treatment received. SHI-K is a valid and reliable tool to assess the speech-related quality of life of individuals with speech disorders. This tool can allow clinicians to plan better rehabilitation, and it can be used as an outcome tool for any treatment studies. The findings of the study emphasize the importance of considering patient priorities before commencing surgical or therapeutic interventions.

The Test of Masticating and Swallowing Solids (TOMASS): Reliability, Validity and Normative Data for the Adult Indian Population.

The Test of Masticating and Swallowing Solids (TOMASS) is a reliable and well-validated tool to assess the effectiveness of solid bolus ingestion. Previous studies have established normative values for 4 to 80+ years across a range of commercially available crackers and countries. The current study aimed to establish normative data for the TOMASS across age and gender groups for a commercially available biscuit (cracker) for the adult Indian population. A total of 300 typical individuals in the age range of 21 to 80 years grouped by age and sex participated in the study. Participants were instructed to eat a commercially (locally) available biscuit 'as quickly and comfortably as possible,' and the task was video recorded. The recorded video samples were analyzed to obtain measures of the number of bites, number of masticatory cycles, number of swallows, and total time taken to complete the ingestion of biscuit. Cronbach's α values revealed a moderate to good (0.71 to 0.82) test-retest reliability; ICC values were suggestive of a high level (> 0.76) of interrater reliability for all the measures of TOMASS. The results of the one-way ANOVA revealed a significant main effect of age (F = 3.12, p < 0.01) and gender (F = 4.37, p < 0.01), but not an interaction between the two. Normative data stratified by age and gender were also generated. The TOMASS assessment procedure was feasible, reliable, and valid. In the current study, we observed that males took fewer bites, took less time, chewed less, and swallowed fewer times than females. A definitive age effect was observed for the number of bites, masticatory cycles, and total time. The normative data generated by the current study can serve as clinical benchmarks to assess the ingestion of solid bouls in the adult Indian population.

Effects of dual-task interference on swallowing in healthy aging adults.

A wide body of literature has demonstrated that the neural representation of healthy swallowing is mostly bilateral, with one hemisphere dominant over the other. While several studies have demonstrated the presence of laterality for swallowing related functions among young adults, the data on older adults are still growing. The purpose of this paper is to investigate potential changes in hemispheric dominance in healthy aging adults for swallowing related tasks using a behavioral dual-task paradigm. A modified dual-task paradigm was designed to investigate the potential reduction in hemispherical specialization for swallowing function. Eighty healthy right-handed participants in the study were divided into two groups [Group 1: young adults (18-40 years) and Group 2: older adults (65 and above)]. All the participants performed a timed water swallow test at baseline and with two interference conditions (silent word repetition, and facial recognition). The results of the study revealed the following 1) a statistically significant effect of age on swallow performance; 2) statistically significant effect of each of the interference tasks on two of the swallow measures (VPS and VPT) in younger adults; and 3) no significant effect of the interference tasks on the swallowing performance of older adults. These findings suggest that aging substantially affects swallowing in older individuals, and this potentially accompanies a reduction in the hemispheric specialization for swallowing related tasks.

The Test of Masticating and Swallowing Solids (TOMASS): Normative data for the adult Indian population.

This data article accompanies the manuscript titled 'The Test of Masticating and Swallowing Solids (TOMASS): reliability, validity and normative data for the adult Indian population.' TOMASS is a widely used procedure to assess the effectiveness of solid bolus ingestion. Previous studies have established normative values for 4 to 80+ years across a range of commercially available crackers and countries. In this data set we report normative TOMASS data for the adult Indian population. Data was recorded from 300 typical individuals in the age range of 21 to 80 years grouped by age and sex. Participants were instructed to eat a commercially (locally) available biscuit 'as quickly and comfortably as possible,' and the task was video recorded. The recorded video samples were analyzed to obtain measures of the number of bites, number of masticatory cycles, number of swallows, and total time taken to complete the ingestion of biscuit.

The timed water test of swallowing: Reliability, validity, and normative data from Indian population.

OBJECTIVES: Dysphagia post-stroke represents a substantial health issue. The rates of pneumonia are lesser among those individuals who have passed a dysphagia screening test. Only few among the existing screening tests meet the required standards; the timed water swallow test (TWST) is one among them. The purpose of the study was to establish normative data for the TWST in Indian population. METHODS: The present study involved 480 typical individuals in the age range of 8-80.11 years. All the participants performed TWST and indices of volume per swallow, time per swallow, and swallow capacity were obtained for the tasks of normal and rapid swallow across age and gender. RESULTS: In the first phase of the study, normative data were obtained and summarized by age and gender. The second phase of the study dealt with additional analyses on measures of reliability and validity. Two-way mixed ANOVA was performed with age and gender as the between-group variables, and normal and rapid swallowing as the within-group variables. CONCLUSION: Normative values for the performance of Indian population on TWST were obtained. The results revealed a significant difference for all the three indices of swallow performance across age, gender, and type of swallowing. These norms can be used as a screening tool for identifying swallowing dysfunction.

A Delphi survey based construction and validation of test for oropharyngeal dysphagia in Indian neonates.

BACKGROUND: SLPs have a crucial need to depend on comprehensive clinical swallowing assessments to determine the presence of dysphagia in neonates. A comprehensive clinical swallowing assessment that is ethnoculturally sensitive may help to identify the presence and severity of swallowing problems in neonates. OBJECTIVE: The study aimed to construct and validate the contents of a test for oropharyngeal dysphagia in Indian neonates (TOD-IN). METHOD: The test for oropharyngeal dysphagia in Indian neonates (TOD-IN) was developed using the Delphi process. Five expert panelists served as participants; two rounds of electronic questionnaire-based survey was carried out to develop and validate the contents of TOD-IN. RESULTS: Round one rendered descriptive data that was analyzed quantitatively and qualitatively. At the end of round one, panelists unequivocally agreed on the need for research to develop a validated assessment tool for dysphagia in Indian neonates. The second round dealt with establishing the face and content validity of the final version of TOD-IN. A unanimous consensus was obtained regarding the format, scoring system, and the construct of the final version of the tool. CONCLUSION: Practicing clinicians in India are met with several challenges such as resource constraints, limited infrastructure, increasing caseload, and a lack of trained workforce. We believe that inexperienced clinicians will benefit from the structured guidance provided by TOD-IN in a restrained resource context where prioritization of patients is the key. Further studies investigating the psychometric properties of TOD-IN are in progress.

Two step convolutional neural network for automatic glottis localization and segmentation in stroboscopic videos.

Precise analysis of the vocal fold vibratory pattern in a stroboscopic video plays a key role in the evaluation of voice disorders. Automatic glottis segmentation is one of the preliminary steps in such analysis. In this work, it is divided into two subproblems namely, glottis localization and glottis segmentation. A two step convolutional neural network (CNN) approach is proposed for the automatic glottis segmentation. Data augmentation is carried out using two techniques :  1) Blind rotation (WB), 2) Rotation with respect to glottis orientation (WO). The dataset used in this study contains stroboscopic videos of 18 subjects with Sulcus vocalis, in which the glottis region is annotated by three speech language pathologists (SLPs). The proposed two step CNN approach achieves an average localization accuracy of 90.08% and a mean dice score of 0.65.

Aerodynamic and acoustic characteristics of voice in children with down syndrome-A systematic review.

PURPOSE: The anatomical, physiological, and phenotypic characteristics of children with Down Syndrome results in deviated acoustic and aerodynamic measures in their voice. These deviant vocal presentations may negatively affect the quality of life of children with Down syndrome. The present study aimed to systematically review the available literature on acoustic and aerodynamic voice characteristics of children with Down syndrome. METHOD: A systematic review of studies on acoustic and aerodynamic measures of voice in children with Down Syndrome (using PubMed/MEDLINE, CINAHL, Scopus, ProQuest, Cochrane, Ovid, Science Direct) was carried out. Keywords based on Population-Investigation-Outcome were used to develop search strings. Two authors screened titles and abstracts independently, and appropriate studies were analyzed in detail for data extraction. RESULTS: Out of the 1432 studies, two studies met the inclusion criteria. Different acoustic and aerodynamic measures were employed, such as fundamental frequency, intensity, phonation time, jitter, shimmer and ESGP, MAFR, and LAR. CONCLUSION: Overall, there was a lack of standardized criteria for the evaluation of acoustic and aerodynamic characteristics in the Down syndrome population. Acoustically, there was no significant difference between children with DS and typically developing children. However, aerodynamic studies suggest that there is a significant impairment of glottal valving in children with Down syndrome.

Evaluating the Psychometric Properties of the Kannada Version of EAT 10.

BACKGROUND: Eating Assessment Tool 10 is a symptom survey and has several advantages over other existing questionnaires. The instrument has also proven to be useful in establishing initial dysphagia symptom severity and to aid in measuring treatment outcomes. Due to its wide applicability, the instrument has been translated into several languages. The aim of the present study was to translate and validate the Kannada version of Eating Assessment Tool 10. METHOD: 88 individuals with dysphagia and equal number of healthy individuals filled the Kannada version of Eating Assessment Tool. Internal consistency and test-retest reproducibility were used for reliability testing. Validity was also established by comparing the scores of dysphagia patients and healthy controls. RESULTS: The overall Cronbach's α for the tool was 0.9 indicating a good internal consistency. The internal consistency of each of the items was also high, and ranged 0.88 to 0.9. Twenty patients filled the questionnaire after a span of 48 h, and the ICC coefficient was found to be 0.89 indicating a high reliability. The control group has significantly lower scores for all scales when compared to the dysphagia group [t(174) = 78.41, p < 0.001]. CONCLUSION: The present study demonstrates that the Kannada version of EAT 10 has good internal consistency, test retest reliability, and concurrent validity. The results of the study also reveal that it is a reliable and valid tool for screening dysphagia population.

Translation and Validation of Kannada Version of the Dysphagia Handicap Index.

Background The Dysphagia Handicap Index (DHI) is a 25-item questionnaire that assesses the quality of life among individuals with dysphagia. The aim of this study was to translate and validate the Kannada version of DHI (DHI-K). Method Eighty-eight individuals with dysphagia and an equal number of healthy individuals filled out the DHI-K. Internal consistency and test-retest reproducibility were used for reliability testing. Validity was established by comparing DHI-K scores of patients with dysphagia and healthy controls. Results The overall Cronbach's α for DHI-K was .81, indicating good internal consistency. Cohen's κ agreement for test-retest reliability of self-perceived severity was found to be .9. Correlation between subscales of DHI and self-perceived severity was analyzed using Spearman correlation coefficient and was found to very high. The control group has significantly lower scores for all scales when compared to the dysphagia group (physical: t(174) = 31.74, p < .001; functional: t(174) = 32.65, p < .001; emotional: t(174) = 36.3, p < .001; total: t(174) = 34.08, p < .001). Conclusions This study demonstrates that DHI-K has good internal consistency, test-retest reliability, and concurrent validity. The results of the study also reveal that it is a reliable and valid tool for assessment of handicap in Kannada-speaking dysphagia population.

Forehead against Resistance (FAR): Preliminary Findings from A Clinical Alternative to Shaker's Type of Exercise.

BACKGROUND: Reduced UES opening is a well-known risk factor for dysphagia. The Shaker exercise and the CTAR are the widely used intervention strategies to bring about effective UES opening. But there are well-known difficulties with the clinical use of these two exercise regimes. The present study proposes a clinical alternative to Shaker's exercise and CTAR called the forehead against resistance (FAR) and its variants without altering the central principles of these two regimes. The aim of the present study was to investigate the efficacy of FAR and its variants in bringing about UES opening. METHOD: The study used a comparative cross-sectional study design, with the nonrandomized convenient sampling that included 27 healthy adults. MBS was carried out in the anterior-posterior and lateral views, while the participants performed FAR and its variants. The UES diameter was measured in the baseline and with the subjects performing FAR maneuver and its variants. RESULTS: The result revealed that the participants had greater UES opening on FAR and its variant than the baseline swallow. Also, mean values of UES opening were greater for FAR with chin tuck when compared to FAR alone, although there was no significant main effect with exercise. CONCLUSION: FAR and its variant could be one of the options for increasing UES opening in individuals with dysphagia.