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  • Title: Submucosal bipolar radiofrequency thermal ablation of inferior turbinates: a long-term follow-up with subjective and objective assessment.
    Author: Bäck LJ, Hytönen ML, Malmberg HO, Ylikoski JS.
    Journal: Laryngoscope; 2002 Oct; 112(10):1806-12. PubMed ID: 12368620.
    Abstract:
    OBJECTIVE: To assess the efficacy and morbidity of bipolar radiofrequency thermal ablation of the inferior turbinates in patients with nasal obstruction caused by turbinate hypertrophy. STUDY DESIGN: Prospective, nonrandomized study and outpatient treatment. METHODS: Twenty patients (age range, 23-77 y; median age, 52 y) enrolled in the study. There was one dropout. All the patients had nasal blockage despite medical treatment. Bipolar radiofrequency thermal ablation was delivered to inferior turbinates at 100 kHz with a voltage root mean square value of 168 to 182. The preoperative and postoperative nasal functions were investigated by immediate and long-term visual analogue scale (VAS) scores of symptom parameters, olfactory thresholds, saccharine transit time, rhinomanometry, and acoustic rhinometry. The follow-up was conducted at 1 week and 3, 6, and 12 months. RESULTS: The VAS scores of subjective complaints (nasal discharge, itching, sneezing, crusting) decreased, and the VAS scores of evaluation of the effectiveness (frequency of nasal obstruction, degree of nasal obstruction, and patient satisfaction) increased statistically significantly in the 12-month follow-up without relapses. There were no adverse effects on nasal epithelial clearance time and olfactory functions. In rhinomanometry the changes in total nasal resistance and response to the vasoconstrictor agent were not statistically significant. In acoustic rhinometry the change in the sum of both nasal cavity volumes from nostril to 5 cm was statistically significant 6 and 12 months after the treatments. The difference between the preoperative and postoperative vasoconstrictive effect was not statistically significant. CONCLUSION: The bipolar radiofrequency thermal ablation of inferior turbinates is a promising alternative, which should be considered when planning inferior turbinate interventions.
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