Observation of the mechanism of snoring using sleep nasendoscopy

Quinn, S. J.; Daly, N; Ellis, Peter

doi:10.1111/j.1365-2273.1995.tb00061.x

Cited by 115 publications

(100 citation statements)

References 7 publications

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“…This result does not correspond with that of Quinn et al [6], who observed the sources of snoring using DISN in 50 patients with SS and found that 70% of the patients snore due to palatal fluttering only (type I), and 20% due to palate fluttering combined with evident vibration of the epiglottis (10%), tonsils (8%), and tongue (2%). Sole tongue base vibration and sole epiglottis vibration, which were not observed in our study, was seen in 8 and 2% of the patients, respectively.…”

Section: Discussioncontrasting

confidence: 49%

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Investigation of the Source of Snoring Sound by Drug-Induced Sleep Nasendoscopy

Jia²,

Yu³

et al. 2015

ORL

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Objective: To investigate the source of snoring sound in patients with simple snoring (SS) and different degrees of obstructive sleep apnea syndrome (OSAS) in order to provide a basis for the surgical treatment of snoring. Methods: Fifty-two patients with either SS or OSAS (with an apnea-hypopnea index ≤40) underwent drug-induced sleep nasendoscopy (DISN). Vibration sites in the pharyngeal cavity were observed. Results: Vibration of the soft palate, pharyngeal lateral wall, epiglottis, and tongue base appeared in 100, 53.8, 42.3, and 26.9% of the patients, respectively. The source of snoring sound was divided into two types: palatal fluttering only (type I) and multisite vibration (type II). The latter was divided into 3 subtypes: palatal fluttering with epiglottis vibration (type II_a), palatal fluttering with lateral wall vibration (type II_b), and palatal fluttering with vibration of the lateral wall, epiglottis, and tongue base together (type II_c). The distribution of type I snoring was the highest in SS patients. Type II_b was more common in patients with medium and severe OSAS. Type II_c was most common in patients with severe OSAS. Conclusion: The source of snoring sound is diverse, with SS and OSAS patients showing different features. DISN is a very effective method of identifying the snoring source.

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Section: Discussioncontrasting

confidence: 49%

“…1c). Rapid occlusion and reopening of the aperture or the slit could be observed during inspiration [6]. On the other hand, the epiglottis and the tongue base vibrated with slight amplitude in most patients; concurrent collapse during vibration was also slight or negative.…”

Section: Resultsmentioning

confidence: 99%

Investigation of the Source of Snoring Sound by Drug-Induced Sleep Nasendoscopy

Jia²,

Yu³

et al. 2015

ORL

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“…epiglottis, may also vibrate to a greater or lesser extent in any one individual [8]. In these circumstances, it is no surprise that the present authors found that treatment directed at the soft palate did not abolish snoring in any of the patients, even temporarily.…”

Section: Discussionmentioning

confidence: 54%

“…Although snoring can arise from the vibration of many structures in the upper airway, the soft palate is considered to be the major sound generator [6][7][8]. Based on this assumption, various types of palatal surgical techniques have been developed.…”

mentioning

confidence: 99%

Acoustic analysis of snoring before and after palatal surgery

Jones

Swift²,

Calverley³

et al. 2005

Eur Respir J

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To investigate the effectiveness of palatal surgery for nonapnoeic snoring, 35 patients were block randomised to undergo one of two different palatoplasty procedures. Patients were admitted pre-operatively for audio recording of snoring sound and video recording of sleeping position, and between 1.0 and 4.1 months (mean 2.5) and between 5.9 and 17.5 months (mean 9.7) post-operatively. Sound files, comprising the inspiratory sound of the first 100 snores whilst sleeping in a supine position, were analysed using specifically designed software. Snore duration (s), loudness (dBA), periodicity (%) and energy ratios for the frequency bands 0-200 Hz, 0-250 Hz and 0-400 Hz were calculated. Subjective outcomes were noted. Operation type, body mass index, age, peak nasal inspiratory flow rate, Epworth sleep score and alcohol intake were considered as confounding variables.No patient was cured from snoring. Paired t-test analysis demonstrated statistically significant changes between pre-and early post-operative recordings for snore periodicity and energy ratios in the frequency ranges 0-200 Hz, 0-250 Hz and 0-400 Hz.In conclusion, only the 0-250-Hz energy ratio measurements maintained a statistically significant improvement at the time of the late post-operative recording, despite an obvious drift back to pre-operative levels. No confounding variables were identified. The subjective and objective results correlated poorly. Post-operative changes in the acoustic parameters of snoring sound, following palatal surgery, are demonstrable but short-lived.

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“…Even though it tries to simulate what happens during sleep, it may result in mistaken interpretations, given that the patient that is awaken does not relax the central command he/she has 16 .…”

Section: Discussionmentioning

confidence: 99%

Indicação inicial de tratamento em 60 pacientes com distúrbios ventilatórios obstrutivos do sono

Borges

Paschoal

2005

Rev. Bras. Otorrinolaringol.

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Aim:The author present a retrospective descriptive study of 60 patients with sleep obstructive ventilatory disturbance who have taken medical advice at the Centro Campinas de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço during a period of three years. All the patients have been examined after standardized protocol and decisions related to the treatment have been taken after systematic multidisciplinary discussion. Study design: clinical retrospective. Material and method: The patients were distributed into two groups according to the proposal of surgical and non-surgical treatment. After so, they were studied according to the model of treatment proposed and the main propaedeutic findings: respiratory disturbance index (RDI), body mass index (BMI), cephalometric analysis and Müller maneuver. The main features were compared -isolated or in association -with the model of treatment proposed. Conclusion: Amongst several conclusions obtained, the most important were: surgical and non-surgical treatment were indicated almost in the same proportion for of snoring; surgical treatments were most indicated for snoring and Apnoea-Hipopnoea Syndrome, despite of its modality; RDI, BMI and cephalometric analysis and Müller maneuver had no influence at any therapeutic modality; the therapeutic decision was taken after standardized protocol and systematic multidisciplinary discussion, where each case was discussed individually.

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Observation of the mechanism of snoring using sleep nasendoscopy

Cited by 115 publications

References 7 publications

Investigation of the Source of Snoring Sound by Drug-Induced Sleep Nasendoscopy

Investigation of the Source of Snoring Sound by Drug-Induced Sleep Nasendoscopy

Acoustic analysis of snoring before and after palatal surgery

Indicação inicial de tratamento em 60 pacientes com distúrbios ventilatórios obstrutivos do sono

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