Outcomes of Frontal Sinus Stenting With Steroid Impregnated Microsponge Versus Steroid-Eluting Implant

BACKGROUND

Mometasone-eluting poly-L-lactide-coglycolide (MPLG) is available commercially for frontal sinus ostium (FSO) stenting. An alternative chitosan polymer-based drug delivery microsponge is also available at a lower cost per unit.

OBJECTIVE

To compare the outcomes of MPLG stents versus triamcinolone-impregnated chitosan polymer (TICP) microsponge in frontal sinus surgery.

METHODS

Patients who underwent endoscopic sinus surgery from December 2018 to February 2022 were reviewed to identify those with the intraoperative placement of TICP microsponge or MPLG stent in the FSO. FSO patency was evaluated by endoscopy at follow-up. Twenty-two-item sinonasal outcome test (SNOT-22) was also recorded, and complications were noted.

RESULTS

A total of 68 subjects and 96 FSOs were treated. TICP was first used in August 2021 and MPLG in December 2018. MPLG placement in a Draf 3 cavity was excluded since TICP had not been used during Draf 3 procedure. Both cohorts (TICP 20 subjects, 35 FSOs; MPLG 26 subjects, 39 FSOs) had similar clinical characteristics. At a mean total follow-up of 249.2 days for TICP and 490.4 days for MPLG, FSO patency was 82.9% and 87.1%, respectively (P = .265). At an equivalent follow-up of 130.6 days in TICP and 154.0 days in MPLG, patency was 94.3% and 89.7%, respectively (P = .475). Both groups showed significant reductions in SNOT-22 (P < .001). MPLG demonstrated crusting within the FSO at 1 month (none in TICP).

CONCLUSION

FSO patency for both stents was similar, although TICP had significantly lower costs per unit. Additional comparative trials may be helpful for guiding clinicians on the appropriate clinical situations for the use of these devices.

Evaluation of a steroid releasing sinus implant for the treatment of patients undergoing frontal sinus surgery for chronic rhinosinusitis

INTRODUCTION

Management of the frontal sinus places great demands on the otolaryngologist. Given that the fronto-ethmoidal region is susceptible to recurrent inflammation, scarring, and stenosis, maintaining long-term patency of the frontal sinus is a difficult challenge. Oral and topical anti-inflammatory therapy, post-operative stenting, and 'home-brew' drug elution have been used for the treatment of the frontal sinus with mixed success. Recently an implant has been approved for post-operative placement into the frontal recess. This implant provides reliable and consistent steroid drug elution to address inflammation of the frontal recess secondary to chronic sinusitis. Areas covered: This review discusses the development and application of steroid eluting implants in the postoperative care of patients with chronic frontal sinusitis. All randomized controlled trials evaluating steroid eluting implants are discussed. Relevant supporting material discussing background, economics, safety are included. Expert commentary: Steroid eluting implants fulfill a unique niche in the treatment following frontal sinus surgery. They are shown to decrease the need for post-operative interventions and improve outcomes in patients with chronic sinusitis. There is significant potential for growth in the use of steroid eluting implants.