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Computerized Analysis of Acoustic Characteristics of Patients with Internal Nasal Valve Collapse Before and After Functional Rhinoplasty.

Rezaei F, Omrani MR, Abnavi F, Mojiri F, Golabbakhsh M, Barati S, Mahaki B - J Med Signals Sens (2015 Oct-Dec)

Bottom Line: Acoustic analysis of sounds produced during speech provides significant information about the physiology of larynx and vocal tract.It was seen that an increase in HNR and a decrease in LTAS spectral tilt existed after surgery.Mean LTAS spectral tilt in vowel /a/ decreased from 2.37 ± 1.04 to 2.28 ± 1.17 (P = 0.388), and it was decreased from 4.16 ± 1.65 to 2.73 ± 0.69 in vowel /i/ (P = 0.008).

View Article: PubMed Central - PubMed

Affiliation: Department of Speech and Language Pathology, School of Rehabilitation Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.

ABSTRACT
Acoustic analysis of sounds produced during speech provides significant information about the physiology of larynx and vocal tract. The analysis of voice power spectrum is a fundamental sensitive method of acoustic assessment that provides valuable information about the voice source and characteristics of vocal tract resonance cavities. The changes in long-term average spectrum (LTAS) spectral tilt and harmony to noise ratio (HNR) were analyzed to assess the voice quality before and after functional rhinoplasty in patients with internal nasal valve collapse. Before and 3 months after functional rhinoplasty, 12 participants were evaluated and HNR and LTAS spectral tilt in /a/ and /i/ vowels were estimated. It was seen that an increase in HNR and a decrease in LTAS spectral tilt existed after surgery. Mean LTAS spectral tilt in vowel /a/ decreased from 2.37 ± 1.04 to 2.28 ± 1.17 (P = 0.388), and it was decreased from 4.16 ± 1.65 to 2.73 ± 0.69 in vowel /i/ (P = 0.008). Mean HNR in the vowel /a/ increased from 20.71 ± 3.93 to 25.06 ± 2.67 (P = 0.002), and it was increased from 21.28 ± 4.11 to 25.26 ± 3.94 in vowel /i/ (P = 0.002). Modification of the vocal tract caused the vocal cords to close sufficiently, and this showed that although rhinoplasty did not affect the larynx directly, it changes the structure of the vocal tract and consequently the resonance of voice production. The aim of this study was to investigate the changes in voice parameters after functional rhinoplasty in patients with internal nasal valve collapse by computerized analysis of acoustic characteristics.

No MeSH data available.


Related in: MedlinePlus

Flow diagram of the progress through the phases of trial (i.e., enrollment, intervention, follow-up, data analysis)
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Figure 1: Flow diagram of the progress through the phases of trial (i.e., enrollment, intervention, follow-up, data analysis)

Mentions: In this study, the number of participants was selected as 12 people based on statistics analysis by GPower Software[4748] GPower 3.1.0 (Franz Faul, University of Kiel, Germany)retrieved from http://www.gpower.hhu.de/. Chart 1 shows the flow diagram of the progress through the phases of trial (i.e., enrollment, intervention, follow-up, data analysis) with α = 0.05 and 1−β = 0.95. These participants included patients with internal nasal valve collapse, nine males and three females with a mean age of 24.75 years. They attended Otorhinolaryngology Clinic of Alzahra Hospital in Isfahan, Iran. Once the participants received some information about the study and declared their consent, they underwent an ear-nose-throat (ENT) specialist examination including registering their personal health record, nasoendoscopy, and computed tomography scan. The participants were candidates for functional rhinoplasty who agreed to participate in the study. The inclusion criteria of the study were the moderate to severe collapse of the internal nasal valve and a time gap of 2 years from the beginning of the problem, according to the patients' medical records. The patients with the following criteria were excluded from the study: Craniofacial abnormalities, neurological problems, allergic rhinitis proven by the medical records, nasal pathological findings, lower respiratory diseases (asthma), any history of previous nasal operations, hearing impairment based on pure tone audiometry test, use of drugs to treat the collapse during the study, upper airway infections or allergies, and smoking. All procedures of the study were approved by Research Ethics Committee of Isfahan University of Medical Sciences.


Computerized Analysis of Acoustic Characteristics of Patients with Internal Nasal Valve Collapse Before and After Functional Rhinoplasty.

Rezaei F, Omrani MR, Abnavi F, Mojiri F, Golabbakhsh M, Barati S, Mahaki B - J Med Signals Sens (2015 Oct-Dec)

Flow diagram of the progress through the phases of trial (i.e., enrollment, intervention, follow-up, data analysis)
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4759837&req=5

Figure 1: Flow diagram of the progress through the phases of trial (i.e., enrollment, intervention, follow-up, data analysis)
Mentions: In this study, the number of participants was selected as 12 people based on statistics analysis by GPower Software[4748] GPower 3.1.0 (Franz Faul, University of Kiel, Germany)retrieved from http://www.gpower.hhu.de/. Chart 1 shows the flow diagram of the progress through the phases of trial (i.e., enrollment, intervention, follow-up, data analysis) with α = 0.05 and 1−β = 0.95. These participants included patients with internal nasal valve collapse, nine males and three females with a mean age of 24.75 years. They attended Otorhinolaryngology Clinic of Alzahra Hospital in Isfahan, Iran. Once the participants received some information about the study and declared their consent, they underwent an ear-nose-throat (ENT) specialist examination including registering their personal health record, nasoendoscopy, and computed tomography scan. The participants were candidates for functional rhinoplasty who agreed to participate in the study. The inclusion criteria of the study were the moderate to severe collapse of the internal nasal valve and a time gap of 2 years from the beginning of the problem, according to the patients' medical records. The patients with the following criteria were excluded from the study: Craniofacial abnormalities, neurological problems, allergic rhinitis proven by the medical records, nasal pathological findings, lower respiratory diseases (asthma), any history of previous nasal operations, hearing impairment based on pure tone audiometry test, use of drugs to treat the collapse during the study, upper airway infections or allergies, and smoking. All procedures of the study were approved by Research Ethics Committee of Isfahan University of Medical Sciences.

Bottom Line: Acoustic analysis of sounds produced during speech provides significant information about the physiology of larynx and vocal tract.It was seen that an increase in HNR and a decrease in LTAS spectral tilt existed after surgery.Mean LTAS spectral tilt in vowel /a/ decreased from 2.37 ± 1.04 to 2.28 ± 1.17 (P = 0.388), and it was decreased from 4.16 ± 1.65 to 2.73 ± 0.69 in vowel /i/ (P = 0.008).

View Article: PubMed Central - PubMed

Affiliation: Department of Speech and Language Pathology, School of Rehabilitation Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.

ABSTRACT
Acoustic analysis of sounds produced during speech provides significant information about the physiology of larynx and vocal tract. The analysis of voice power spectrum is a fundamental sensitive method of acoustic assessment that provides valuable information about the voice source and characteristics of vocal tract resonance cavities. The changes in long-term average spectrum (LTAS) spectral tilt and harmony to noise ratio (HNR) were analyzed to assess the voice quality before and after functional rhinoplasty in patients with internal nasal valve collapse. Before and 3 months after functional rhinoplasty, 12 participants were evaluated and HNR and LTAS spectral tilt in /a/ and /i/ vowels were estimated. It was seen that an increase in HNR and a decrease in LTAS spectral tilt existed after surgery. Mean LTAS spectral tilt in vowel /a/ decreased from 2.37 ± 1.04 to 2.28 ± 1.17 (P = 0.388), and it was decreased from 4.16 ± 1.65 to 2.73 ± 0.69 in vowel /i/ (P = 0.008). Mean HNR in the vowel /a/ increased from 20.71 ± 3.93 to 25.06 ± 2.67 (P = 0.002), and it was increased from 21.28 ± 4.11 to 25.26 ± 3.94 in vowel /i/ (P = 0.002). Modification of the vocal tract caused the vocal cords to close sufficiently, and this showed that although rhinoplasty did not affect the larynx directly, it changes the structure of the vocal tract and consequently the resonance of voice production. The aim of this study was to investigate the changes in voice parameters after functional rhinoplasty in patients with internal nasal valve collapse by computerized analysis of acoustic characteristics.

No MeSH data available.


Related in: MedlinePlus