Cryosurgical Ablation for Treatment of Rhinitis: Two-Year Results of a Prospective Multicenter Study.

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To assess the long-term (12-24 months) safety and effectiveness of cryoablation of the posterior nasal nerve as treatment for chronic rhinitis.A multicenter, prospective, single-arm clinical study.The study was conducted from February 2017 to April 2020. Study endpoints included change from baseline in the reflective Total Nasal Symptom Score (rTNSS), Rhinoconjunctivitis Quality of Life Questionnaire (RQLQ), physician assessment of improvement using the Clinical Global Impression-Improvement (CGI-I), and the incidence of treatment-related adverse events.Ninety-one participants completed the study through the initial 12-month study period. Sixty-two participants consented to the long-term follow-up with 57 completing the 24-month follow-up. Significant improvements in the total rTNSS were reflected in a median change from baseline of -3.0 or -4.0 at all timepoints (P 

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Authors: Randall A Ow, Ellen M O’Malley, Joseph K Han, Kent K Lam, David M Yen