OBJECTIVES: Radiofrequency surgery is a minimally invasive technique for the treatment of the tongue base in sleep-disordered breathing. The aim of this study was to evaluate the changes in upper airway anatomy induced by radiofrequency surgery with MRI. STUDY DESIGN AND SETTING: 10 patients with sleep-disordered breathing were treated with radiofrequency surgery at tongue base. MRI measurements were performed before and after surgery with the help of a recently published protocol. RESULTS: The mean total number of energy delivered per patient was 4750 +/- 1641 Joule. Relevant changes could be observed neither for tongue volume or dimension nor for retrolingual space. CONCLUSIONS: Changes in upper airway anatomy could not be demonstrated. The effects of radiofrequency surgery of the tongue base may more likely be a result of changes in upper airway collapsibility. SIGNIFICANCE: Functional effects of surgical interventions in sleep-disordered breathing should be considered in addition to mechanistic concepts alone.
OBJECTIVES: Radiofrequency surgery is a minimally invasive technique for the treatment of the tongue base in sleep-disordered breathing. The aim of this study was to evaluate the changes in upper airway anatomy induced by radiofrequency surgery with MRI. STUDY DESIGN AND SETTING: 10 patients with sleep-disordered breathing were treated with radiofrequency surgery at tongue base. MRI measurements were performed before and after surgery with the help of a recently published protocol. RESULTS: The mean total number of energy delivered per patient was 4750 +/- 1641 Joule. Relevant changes could be observed neither for tongue volume or dimension nor for retrolingual space. CONCLUSIONS: Changes in upper airway anatomy could not be demonstrated. The effects of radiofrequency surgery of the tongue base may more likely be a result of changes in upper airway collapsibility. SIGNIFICANCE: Functional effects of surgical interventions in sleep-disordered breathing should be considered in addition to mechanistic concepts alone.
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