Publications by authors named "Ali Dehqan"
Purpose: To cross-culturally adapt the Voice Quality of Life Profile (IVQLP) into Brazilian Portuguese (BP).
Methods: The cross-cultural adaptation process was performed in five stages: translation of the IVQLP into BP by three native BP experts fluent in American English; preparation of a consensus version; back-translation by a native American English expert fluent in BP; analysis by a committee of five experts and preparation of the final version of the instrument in BP, which was named IVQLP-Br; and pre-testing. The IVQLP-Br aims to assess the impacts of the voice more comprehensively, encompassing various areas of an individual's life.
Objectives: The purpose of the present study was to examine the effect of adding a cricothyroid visor maneuver to conventional voice-facilitating techniques on voice quality and reported symptoms in patients with primary muscle tension dysphonia.
Methods: This was a double-blind two parallel-group clinical trial in which 20 adult patients participated through convenience sampling. Participants were allocated to intervention (combined treatment) and control (conventional treatment) groups.
Background: Regarding human coronavirus, the severe acute respiratory syndrome coronavirus 2 pandemic, the novelty of disease, and consequently the lack of studies, the etiology of dysphonia in patients with coronavirus disease 2019 is still unknown and needs to be investigated. The purpose of the current study is to investigate the effect of a new manual therapy technique, cricothyroid visor maneuver, on muscle tension dysphonia symptoms for a patient who had experienced dysphonia symptoms due to the coronavirus disease 2019 infection.
Case Presentation: A 55-year-old retired Iranian teacher who was diagnosed with muscle tension dysphonia by an otolaryngologist participated in this study.
Objective: The purpose of this study was to assess the effects of a novel manual therapy, the Cricothyroid visor maneuver (CVM) therapy, on acoustic, auditory perceptual and self-assessment ratings in Muscle tension dysphonia (MTD) patients.
Study Design: This was a retrospective study of 6 clinical cases.
Materials And Method: The study comprised 6 Persian speakers with MTD (2 men and 4 women) and mean age 38.
Objective: In standardized connected speech samples, cepstral peak prominence (CPP) and smoothed CPP (CPPS) have been described as accurate parameters to evaluate voice quality. Lack of normal auditory feedback in post-lingually deaf CI users might influence tuning the acoustic parameters in speech production. Based on shreds of evidence, normal hearing results in suitable vocal control through the sensory-motor linkage.
View Article and Find Full Text PDFPurpose: This study aims to study the comparison of vocal fatigue and vocal tract discomfort between teachers of normal pupils and teachers of mentally disabled pupils.
Study Design: Cross-sectional study METHODS: Participants were 179 teachers (50 male, 129 female) and 30 non-teachers (14 male, 16 female) who participated in the current study. The teachers work in elementary schools.
Objective: The aim of the study is the clinical investigation of a patient with a vocal fold polyp, and the visual, acoustical, perceptual, and self-report changes before and after using the cricothyroid visor manoeuvre (CVM).
Design: A 48-year-old female university professor, gynecologist, and obstetrician with a history of laryngopharyngeal reflux and a left vocal polyp participated. Treatment was provided in 10 sessions.
Purpose: Five dimensions of voice assessment are considered as visual evaluation, videostroboscopy, acoustic, aerodynamic, patient-based, and auditory-perceptual. Auditory-perceptual voice assessment scales are the standard scales for clinicians to document voice therapy outcomes in dysphonic patients. The primary objective of the present study was to investigate the construct and discriminant validities of the Persian Version of the CAPE-V (ATSHA).
View Article and Find Full Text PDFIntroduction: Muscle tension dysphonia (MTD) is used as a clinical and diagnostic descriptive label for a diverse range of vocal fold behaviors caused by increased tension of the (para) laryngeal musculature. These increased tension can occur in the cricothyroid muscle and in the ''visor'' mechanism, contributing to voice problems. The main goal of this study is to determine whether a new method, the cricothyroid visor maneuver (CVM), is an effective method for improving quality and other aspects of the MTD patients' voices.
View Article and Find Full Text PDFObjective: The aim of the present study is to validate, and assess the reliability of the Persian version of Voice Handicap Index-Throat (VHI-Tp) as a self-reported questionnaire for patients with throat problems that could make the patients' estimation of the throat discomforts possible. It is a subscale to be used independently.
Study Design: This is a cross-sectional study.
Purpose: The present study explored the effectiveness of the Lidcombe Program, the parent-child interaction therapy (PCIT) approach, and an integrated (Lid-PCIT) program on the treatment of children who stutter.
Methods: The present research was a single-subject study with an alternative treatment design. Participants were 6 preschool children who were randomly assigned into three groups.
Objective: This study aimed to evaluate the vocal changes in the Iranian pregnant women according to trimesters both objectively and subjectively.
Methods: There were 93 pregnant women and 31 non-pregnant women participants in the study. Thirty-three of the 93 pregnant women were in their first trimester, 31 in their second trimester, and 29 in their third trimester of their pregnancies.
Objectives: The aim of the present study is to develop, validate, and assess the reliability of the Persian version of Singing Voice Handicap Index (SVHIp) as a self-reported questionnaire for singers with voice disorders that measure the patient's self-perceived voice handicap.
Study Design: This is a cross-sectional study.
Materials And Method: During this study, the Persian version of singing voice handicap index was administered to 115 singers (90 male and 25 female, age range: 22-45 years).
Introduction: Manual circumlaryngeal therapy (MCT) aims to correct laryngeal position and relax (para) laryngeal and cervical muscles resulting in improved voice quality. The goal of the current study was to further verify long-term effects of MCT in the treatment of Muscle Tension Dysphonia (MTD) patients based on acoustic findings and perceptual judgments.
Method: Twenty-eight adult female patients who had been referred to the speech therapy clinic of Khatam Hospital, Zahedan city, participated in this study.
Objectives: The Iranian Voice Quality of Life Profile (IVQLP) is a recent culture-based developed tool for assessing the quality of life of dysphonic patients. The research questions addressed here are as follows: (1) Are the correlations between IVQLP scores and values of objective voice measures? (2) Do the correlations differ across the three different voice disorders?
Methods: The subjects were divided into three groups: muscle tension dysphonia (MTD) (n = 62), benign midmembranous vocal fold lesions (n = 56), and unilateral vocal fold paralysis (UVFP) (n = 32). The study sample consisted of 91 males and 59 females.
Objectives: An important domain in health-related quality of life evaluations is quality of life perceptions due to having a voice disorder. The purpose of the current study was (1) to examine the correlation of the Iranian Voice Quality of Life Profile (IVQLP) with the Voice-Related Quality of Life (VRQOL) and Voice Handicap Index-30 (VHI-30) for establishing the construct convergent validity of the IVQLP, and (2) to examine the correlation between VRQOL and VHI-30.
Methods: Study sample consisted of 150 patients, 91 male and 59 female, diagnosed with muscle tension dysphonia, benign organic disorders such as polyps and nodules, and unilateral vocal fold paralysis.
Objectives: An important domain in health-related quality of life evaluations is quality of life perceptions due to having a voice disorder. The objective of this study was to examine the factor structure of the Iranian Voice Quality of Life Profile (IVQLP) based on Exploratory Factor Analysis and confirmatory factor analysis.
Methods: The study sample consisted of 280 patients (174 males and 106 females) diagnosed with MTD, benign organic disorders such as polyps and nodules, and unilateral vocal fold paralysis and cancer.
Purpose: Second formant (F2) transitions can be used to infer attributes of articulatory transitions. This study compared formant transitions during fluent speech segments of Farsi (Persian) speaking people who stutter and normally fluent Farsi speakers.
Methods: Ten Iranian males who stutter and 10 normally fluent Iranian males participated.
Objectives: No culture based instrument exists for the people of Iran to measure outcomes of voice disorders. The objective of this study was to develop a statistically and culturally robust tool for assessing voice disorder outcomes in the Iranian population.
Methods: A 65-item assessment tool called the Iranian Voice Quality of Life Profile (IVQLP) was developed after three stages of study.
Objectives: Voice disorders that affect the quality of voice also result in varying degrees of psychological and social problems. The research question here is whether the correlations between Voice Handicap Index (VHI)-30 scores and objective acoustic measures differ in patients with different types of voice disorders.
Methods: The subjects were divided into three groups: muscle tension dysphonia (MTD), benign mid-membranous vocal fold lesions, and unilateral vocal fold paralysis (UVFP).
Introduction: In Iran, the total number of elementary schoolteachers is estimated to be nearly 300 000 people and this population is at risk for developing voice disorders. Acoustical characteristics of voice for schoolteachers in Iran are unknown but are relevant to the quantitative description, diagnosis, intervention, reassessment, and outcomes of their voices.
Materials And Methods: Fifteen female and 15 male Iranian primary schoolteachers in the age range of 35-40 years with 15 years teaching experience volunteered to participate in the study.
Background/aims: There are no studies of the phonatory parameters of elderly Iranian speakers. The purpose of this study was to obtain normative acoustic data for a group of elderly Iranian male and female speakers over 70 years of age. Four selected acoustic parameters [fundamental frequency (F0), jitter, shimmer, and harmonics-to-noise ratio] were obtained and compared to a group of young and middle-aged speakers.
View Article and Find Full Text PDFObjectives: A critical factor that affects human voice production is hearing because it provides necessary feedback for control of speech. Vocal quality of profoundly hearing-impaired children is often considered deviant from both perceptual and acoustic perspectives. The present study compares selected vocal acoustic parameters of a profound hearing loss group of boys with normal peers.
View Article and Find Full Text PDFObjectives: Objective measurements in general and acoustic measurements in particular have become a substantial aspect of voice assessment during the last few decades and studies have established that normative data is necessary for acoustic analysis. Voice acoustic analysis including fundamental frequency (F(0)), jitter, shimmer, harmonics-to-noise ratio (HNR), and maximum phonation time (MPT) can now be easily recorded and analyzed using a computer. Because these systems are widely used in clinical practice, this study was designed to establish the normal acoustic analysis parameters in normal Iranian adults.
View Article and Find Full Text PDFAlthough speech motor control has been studied intensively in normal-hearing and hearing-impaired (HI) speakers in America and Europe, essentially no research has been performed using Persian-speaking participants. A total of 46 prelingual hearing-impaired 15-18-year-old males and 15 normally hearing control participants from Iran participated in the study. Three speaking performance measures, oral diadochokinesis (DDK), speaking rate (words per minute), and intelligibility ratings, were obtained for the two groups and compared to previously published research for English-speaking participants.
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