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Comparative effects of snoring sound between two minimally invasive surgeries in the treatment of snoring: a randomized controlled trial.

Lee LA, Yu JF, Lo YL, Chen NH, Fang TJ, Huang CG, Cheng WN, Li HY - PLoS ONE (2014)

Bottom Line: The VAS and snore outcomes survey scores were significantly improved in both groups.In addition, the snoring index was significantly reduced in the radiofrequency group.Multi-stage radiofrequency surgery was not tested.

View Article: PubMed Central - PubMed

Affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Chang Gung Memorial Hospital at Linkou, School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan, R.O.C.; Sleep Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan, R.O.C.; Department of Otolaryngology, Xiamen Chang Gung Hospital, Xiamen, Fujian Province, China.

ABSTRACT

Background: Minimally invasive surgeries of the soft palate have emerged as a less-invasive treatment for habitual snoring. To date, there is only limited information available comparing the effects of snoring sound between different minimally invasive surgeries in the treatment of habitual snoring.

Objective: To compare the efficacy of palatal implant and radiofrequency surgery, in the reduction of snoring through subjective evaluation of snoring and objective snoring sound analysis.

Patients and method: Thirty patients with habitual snoring due to palatal obstruction (apnea-hypopnea index ≤15, body max index ≤30) were prospectively enrolled and randomized to undergo a single session of palatal implant or temperature-controlled radiofrequency surgery of the soft palate under local anesthesia. Snoring was primarily evaluated by the patient with a 10 cm visual analogue scale (VAS) at baseline and at a 3-month follow-up visit and the change in VAS was the primary outcome. Moreover, life qualities, measured by snore outcomes survey, and full-night snoring sounds, analyzed by a sound analytic program (Snore Map), were also investigated at the same time.

Results: Twenty-eight patients completed the study; 14 received palatal implant surgery and 14 underwent radiofrequency surgery. The VAS and snore outcomes survey scores were significantly improved in both groups. However, the good response (postoperative VAS ≤3 or postoperative VAS ≤5 plus snore outcomes survey score ≥60) rate of the palatal implant group was significantly higher than that of the radiofrequency group (79% vs. 29%, P = 0.021). The maximal loudness of low-frequency (40-300 Hz) snores was reduced significantly in the palatal implant group. In addition, the snoring index was significantly reduced in the radiofrequency group.

Conclusions: Both palatal implants and a single-stage radiofrequency surgery improve subjective snoring outcomes, but palatal implants have a greater effect on most measures of subjective and objective snoring. Multi-stage radiofrequency surgery was not tested.

Trial registration: ClinicalTrials.gov NCT01955083.

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Related in: MedlinePlus

Schematic diagram (CONSORT 2010 flowchart diagram) summarizing the study design.AHI: apnea-hypopnea index. PI: palatal implant; RF, radiofrequency. SOS: snoring outcomes survey. VAS: visual analogue scale.
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pone-0097186-g001: Schematic diagram (CONSORT 2010 flowchart diagram) summarizing the study design.AHI: apnea-hypopnea index. PI: palatal implant; RF, radiofrequency. SOS: snoring outcomes survey. VAS: visual analogue scale.

Mentions: This study was a prospective, randomized, parallel-controlled, open labeled trial that was conducted from August 1, 2010 to July 30, 2012 in a tertiary medical center (Department of Otorhinolaryngology, Head and Neck Surgery, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan). The flowchart diagram following the CONSORT 2010 guideline demonstrated our study design (Figure 1). No important changes to methods (such as eligibility criteria) have been made after trial commencement. Thirty-four patients with habitual snoring and apnea-hypopnea index (AHI) ≤15 events/h confirmed by standard full-night polysomnography were prospectively recruited from October 1, 2010 to March 30, 2012 for the treatment of snoring by the two MIS methods. Standard level I polysomnography (Nicolet UltraSom System, Madison, WI, USA) was performed in the sleep laboratory to document sleep parameters in each patient. All respiratory events were scored as per standard criteria [20].


Comparative effects of snoring sound between two minimally invasive surgeries in the treatment of snoring: a randomized controlled trial.

Lee LA, Yu JF, Lo YL, Chen NH, Fang TJ, Huang CG, Cheng WN, Li HY - PLoS ONE (2014)

Schematic diagram (CONSORT 2010 flowchart diagram) summarizing the study design.AHI: apnea-hypopnea index. PI: palatal implant; RF, radiofrequency. SOS: snoring outcomes survey. VAS: visual analogue scale.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4016275&req=5

pone-0097186-g001: Schematic diagram (CONSORT 2010 flowchart diagram) summarizing the study design.AHI: apnea-hypopnea index. PI: palatal implant; RF, radiofrequency. SOS: snoring outcomes survey. VAS: visual analogue scale.
Mentions: This study was a prospective, randomized, parallel-controlled, open labeled trial that was conducted from August 1, 2010 to July 30, 2012 in a tertiary medical center (Department of Otorhinolaryngology, Head and Neck Surgery, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan). The flowchart diagram following the CONSORT 2010 guideline demonstrated our study design (Figure 1). No important changes to methods (such as eligibility criteria) have been made after trial commencement. Thirty-four patients with habitual snoring and apnea-hypopnea index (AHI) ≤15 events/h confirmed by standard full-night polysomnography were prospectively recruited from October 1, 2010 to March 30, 2012 for the treatment of snoring by the two MIS methods. Standard level I polysomnography (Nicolet UltraSom System, Madison, WI, USA) was performed in the sleep laboratory to document sleep parameters in each patient. All respiratory events were scored as per standard criteria [20].

Bottom Line: The VAS and snore outcomes survey scores were significantly improved in both groups.In addition, the snoring index was significantly reduced in the radiofrequency group.Multi-stage radiofrequency surgery was not tested.

View Article: PubMed Central - PubMed

Affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Chang Gung Memorial Hospital at Linkou, School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan, R.O.C.; Sleep Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan, R.O.C.; Department of Otolaryngology, Xiamen Chang Gung Hospital, Xiamen, Fujian Province, China.

ABSTRACT

Background: Minimally invasive surgeries of the soft palate have emerged as a less-invasive treatment for habitual snoring. To date, there is only limited information available comparing the effects of snoring sound between different minimally invasive surgeries in the treatment of habitual snoring.

Objective: To compare the efficacy of palatal implant and radiofrequency surgery, in the reduction of snoring through subjective evaluation of snoring and objective snoring sound analysis.

Patients and method: Thirty patients with habitual snoring due to palatal obstruction (apnea-hypopnea index ≤15, body max index ≤30) were prospectively enrolled and randomized to undergo a single session of palatal implant or temperature-controlled radiofrequency surgery of the soft palate under local anesthesia. Snoring was primarily evaluated by the patient with a 10 cm visual analogue scale (VAS) at baseline and at a 3-month follow-up visit and the change in VAS was the primary outcome. Moreover, life qualities, measured by snore outcomes survey, and full-night snoring sounds, analyzed by a sound analytic program (Snore Map), were also investigated at the same time.

Results: Twenty-eight patients completed the study; 14 received palatal implant surgery and 14 underwent radiofrequency surgery. The VAS and snore outcomes survey scores were significantly improved in both groups. However, the good response (postoperative VAS ≤3 or postoperative VAS ≤5 plus snore outcomes survey score ≥60) rate of the palatal implant group was significantly higher than that of the radiofrequency group (79% vs. 29%, P = 0.021). The maximal loudness of low-frequency (40-300 Hz) snores was reduced significantly in the palatal implant group. In addition, the snoring index was significantly reduced in the radiofrequency group.

Conclusions: Both palatal implants and a single-stage radiofrequency surgery improve subjective snoring outcomes, but palatal implants have a greater effect on most measures of subjective and objective snoring. Multi-stage radiofrequency surgery was not tested.

Trial registration: ClinicalTrials.gov NCT01955083.

Show MeSH
Related in: MedlinePlus