RESOLVE: bioabsorbable steroid-eluting sinus implants for in-office treatment of recurrent sinonasal polyposis after sinus surgery: 6-month outcomes from a randomized, controlled, blinded study.

BACKGROUND: Patients with recurrent sinonasal polyposis after endoscopic sinus surgery (ESS) have limited treatment options. Safety and efficacy were previously reported for a bioabsorbable sinus implant that elutes mometasone furoate for 3 months. Here we summarize longer-term outcomes. METHODS: A randomized, controlled, blinded study with 100 chronic rhinosinusitis with nasal polyps (CRSwNP) patients who failed medical treatment and were considered candidates for revision ESS. Treated patients (n = 57) underwent in-office implant placement. Control patients (n = 43) underwent a sham procedure. Endoscopic grading at 3 months by clinicians was corroborated by an independent review of randomized videoendoscopies by a panel of 3 sinus surgeons. Six-month follow-up included endoscopic grading and patient-reported outcomes. RESULTS: At 6 months, treated patients experienced significant improvement in Nasal Obstruction Symptom Evaluation (NOSE) score (p = 0.021) and >2-fold improvement in mean nasal obstruction/congestion score (-1.06 ± 1.4 vs -0.44 ± 1.4; p = 0.124). Endoscopically, treated patients experienced significant reduction in ethmoid sinus obstruction (p < 0.001) and bilateral polyp grade (p = 0.018) compared to controls. Panel review confirmed a significant reduction in ethmoid sinus obstruction (p = 0.010) and 2-fold improvement in bilateral polyp grade (p = 0.099), which reached statistical significance (p = 0.049) in a subset of 67 patients with baseline polyp burden ≥2 bilaterally. At 6 months, control patients were at 3.6 times higher risk of remaining indicated for ESS than treated patients. CONCLUSION: The symptomatic and endoscopic improvements observed confirm the efficacy of the steroid-eluting implant for in-office treatment of CRSwNP after ESS. These longer-term 6-month study results demonstrate that the steroid-eluting implant represents a durable, safe, and effective treatment strategy for this patient population.

RESOLVE: a randomized, controlled, blinded study of bioabsorbable steroid-eluting sinus implants for in-office treatment of recurrent sinonasal polyposis.

BACKGROUND: Patients with recurrent sinonasal polyposis after endoscopic sinus surgery (ESS) have limited treatment options. This study evaluated the safety and efficacy of a bioabsorbable steroid-eluting implant with 1350 µg of mometasone furoate for its ability to dilate obstructed ethmoid sinuses, reduce polyposis, and reestablish sinus patency. METHODS: This was a randomized, controlled, blinded study including 100 patients chronic rhinosinusitis with nasal polyposis (CRSwNP) refractory to medical therapy and considered candidates for revision ESS. Follow-up included endoscopic grading by investigators and patient-reported outcomes. RESULTS: Treated patients (n = 53; age as mean ± standard deviation [SD] 47.8 ± 12.6 years; 55% male) underwent in-office bilateral placement. Control patients (n = 47; age 51.6 ± 13.1 years; 66% male) underwent a sham procedure. At 3 months, treated patients experienced a significant reduction in bilateral polyp grade (p = 0.0269) and ethmoid sinus obstruction (p = 0.0001) compared to controls. Treated patients also experienced a 2-fold improvement in the mean nasal obstruction/congestion score (-1.33 ± 1.47 vs -0.67 ± 1.45; p = 0.1365). This improvement reached statistical significance (p = 0.025) in patients with greater polyp burden (grade ≥2 bilaterally; n = 74). At 3 months, 53% of treated patients compared to only 23% of controls were no longer indicated for repeat ESS. There was no serious adverse event or clinically significant increases in intraocular pressure or cataract formation. CONCLUSION: The symptomatic improvement and statistically significant reduction in polyp grade and ethmoid sinus obstruction supported the efficacy of the steroid-eluting implant for in-office treatment of CRS patient with recurrent polyposis after ESS. The study results demonstrated that the steroid-eluting implant represents a safe and effective alternative to current management for this patient population.

ADVANCE: a multisite trial of bioabsorbable steroid-eluting sinus implants.

OBJECTIVES/HYPOTHESIS: Disease recurrence and adverse wound healing in the form of inflammation, polyposis, adhesions, and middle turbinate lateralization may induce suboptimal outcomes following sinus surgery. The study objective was to assess the safety and effectiveness of a bioabsorbable, steroid-eluting implant used following functional endoscopic sinus surgery in patients with chronic rhinosinusitis (CRS). STUDY DESIGN: Prospective, multicenter, single-cohort trial enrolling 50 patients. METHODS: The study allowed bilateral or unilateral steroid-eluting implant placement. Oral and topical steroids were withheld for 60 days postoperatively. Endoscopic follow-up was performed to 60 days. Patient-reported outcomes (Sino-Nasal Outcome Test-22 Questionnaire, Rhinosinusitis Disability Index) were collected to 6 months. Efficacy was assessed by grading inflammation, polyp formation, adhesions, and middle turbinate position. Safety assessment included ocular exams at baseline and 30 days. RESULTS: Implants were successfully placed in all 90 sinuses. Mean inflammation scores were minimal at all time points. At 1 month, the prevalence of polypoid edema was 10.0%, significant adhesions 1.1%, and middle turbinate lateralization 4.4%. Changes from baseline in patient-reported outcomes were statistically significant (P < .0001). No clinically significant changes from baseline in intraocular pressure occurred. CONCLUSIONS: This consecutive case series provides clinical evidence of the safety, effectiveness, and clinical utility of a bioabsorbable steroid-eluting implant for use in CRS patients. The implant was associated with favorable rates of sinus patency. At 1 month, minimal degrees of inflammation and adhesions were observed, suggesting a positive clinical impact of local steroid delivery without evidence of ocular risk.