Temperature-controlled radiofrequency tissue volume reduction of the soft palate (somnoplasty) in the treatment of habitual snoring: results of a European multicenter trial.

Acta oto-laryngologica · 2000 · Benefit · Low evidence

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BenefitLow evidencePaper 3983

Study snapshot

PublicationActa oto-laryngologica · 2000

Study typeother

Reported directionBenefit

Evidence ratingLow

Abstract

Temperature-controlled radiofrequency tissue volume reduction of the soft palate has been introduced as a minimally invasive, outpatient procedure for the treatment of habitual snoring and mild obstructive sleep apnea. A prospective, non-randomized multi-center European clinical study was conducted to investigate the efficacy of Somnoplasty in reducing snoring. Each patient underwent a pre- and post-treatment full-night polysomnography. TCRFe of the soft palate (1 midline lesion/session) was carried out under local anesthesia with a maximum of 3 consecutive treatment sessions. Forty-five, nonapneic snorers (RDI 5.1 +/- 4.3, BMI 26.6 +/- 3.2 kg/m2) completed the protocol. A mean of 692.3 +/- 67.7) J was delivered/treatment session. There was a significant improvement in the snoring index 7.6 (+/- 2.1 ) vs 4.1 (+/- 2.9). p < 0.001 and in the Epworth Sleepiness Score 8.5 (+/- 5.0) versus 6.0 (+/- 4.3), p = 0.001. No major adverse events were reported and postoperative pain was minimal. Overall, 45% of patients had a post-treatment snoring index < 3 (success) and 84% of the patients reported an improvement in snoring. It was concluded that Somnoplasty, following a protocol with I midline lesion of maximal 700 J/lesion for 1-3 treatment sessions, improves snoring in the majority of patients. Further studies are required to investigate whether treatment efficacy can be improved by utilizing multiple lesions/session or by increasing the amount of energy/lesion. The absence of serious adverse events and the findings of minimal postoperative pain support the use of TCRFe (Somnoplasty) as a minimally invasive surgical procedure for snoring.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeother

Effect directionbenefit

PopulationNonapneic habitual snorers (mild obstructive sleep apnea mentioned in background; study completers described as nonapneic snorers)

Sample size45

ExposureRF · 1–3 treatment sessions (max 3 consecutive sessions); 1 midline lesion/session

Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

In a prospective, non-randomized European multicenter clinical study of 45 nonapneic snorers, temperature-controlled radiofrequency treatment of the soft palate significantly improved the snoring index (7.6 ± 2.1 to 4.1 ± 2.9; p<0.001) and Epworth Sleepiness Score (8.5 ± 5.0 to 6.0 ± 4.3; p=0.001). No major adverse events were reported and postoperative pain was minimal; 45% achieved a post-treatment snoring index <3 and 84% reported improvement.

Outcomes measured

Snoring index (polysomnography)
Epworth Sleepiness Score
Adverse events
Postoperative pain
Self-reported improvement in snoring

Limitations

Prospective non-randomized design
No control/sham group described
Frequency and dosimetry details (e.g., MHz, SAR) not reported; energy delivered reported in joules only

View raw extracted JSON

{
  "study_type": "other",
  "exposure": {
    "band": "RF",
    "source": "medical device (radiofrequency tissue volume reduction; Somnoplasty)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "1–3 treatment sessions (max 3 consecutive sessions); 1 midline lesion/session"
  },
  "population": "Nonapneic habitual snorers (mild obstructive sleep apnea mentioned in background; study completers described as nonapneic snorers)",
  "sample_size": 45,
  "outcomes": [
    "Snoring index (polysomnography)",
    "Epworth Sleepiness Score",
    "Adverse events",
    "Postoperative pain",
    "Self-reported improvement in snoring"
  ],
  "main_findings": "In a prospective, non-randomized European multicenter clinical study of 45 nonapneic snorers, temperature-controlled radiofrequency treatment of the soft palate significantly improved the snoring index (7.6 ± 2.1 to 4.1 ± 2.9; p<0.001) and Epworth Sleepiness Score (8.5 ± 5.0 to 6.0 ± 4.3; p=0.001). No major adverse events were reported and postoperative pain was minimal; 45% achieved a post-treatment snoring index <3 and 84% reported improvement.",
  "effect_direction": "benefit",
  "limitations": [
    "Prospective non-randomized design",
    "No control/sham group described",
    "Frequency and dosimetry details (e.g., MHz, SAR) not reported; energy delivered reported in joules only"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "radiofrequency",
    "Somnoplasty",
    "soft palate",
    "snoring",
    "polysomnography",
    "Epworth Sleepiness Score",
    "multicenter",
    "non-randomized",
    "tissue volume reduction"
  ],
  "suggested_hubs": [
    {
      "slug": "medical-rf-ablation",
      "weight": 0.9,
      "reason": "Study evaluates a temperature-controlled radiofrequency surgical device (Somnoplasty) for soft palate tissue reduction."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1080/00016480050218735
PubMed: 11200595

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