Topical antibiotics
Topical application delivers the antibiotic directly to the area (by dissolving it in solution or administering via nebulizer). This is not Food and Drug Administration-approved, and early results do not show a clear benefit over oral antibiotics. The majority of studies have shown that antifungals are not beneficial.[49]Ebbens FA, Georgalas C, Luiten S, et al. The effect of topical amphotericin B on inflammatory markers in patients with chronic rhinosinusitis: a multicenter randomized controlled study. Laryngoscope. 2009 Feb;119(2):401-8.
http://www.ncbi.nlm.nih.gov/pubmed/19160404?tool=bestpractice.com
However, good-quality evidence shows topical antibiotics have a clear role in postsurgical patients with culture-directed therapy. Topical antibiotics should not be first-line management, but may be attempted in patients refractory to the traditional topical corticosteroids and oral antibiotics.[50]Lim M, Citardi MJ, Leong JL.Topical antimicrobials in the management of chronic rhinosinusitis: a systematic review. Am J Rhinol. 2008 Jul-Aug;22(4):381-9.
http://www.ncbi.nlm.nih.gov/pubmed/18702902?tool=bestpractice.com
Balloon catheter technology for sinus dilatation
In addition to existing technological advances, such as image guidance systems, new tools are being developed. One such tool is the use of balloon catheters to dilate sinus ostia.[51]National Institute for Health and Care Excellence. Balloon catheter dilation of paranasal sinus ostia for chronic sinusitis. September 2008 [internet publication].
http://www.nice.org.uk/guidance/IPG273
[52]Taghi AS, Khalil SS, Mace AD, et al. Balloon sinuplasty: balloon-catheter dilation of paranasal sinus ostia for chronic rhinosinusitis. Expert Rev Med Devices. 2009 Jul;6(4):377-82.
http://www.ncbi.nlm.nih.gov/pubmed/19572792?tool=bestpractice.com
The flexible balloon catheters are used to dilate the ostia (openings) without the need for extensive tissue removal or trauma. Fluoroscopy or transillumination is used to confirm location of the catheter. Further studies are warranted and in progress to determine whether this tool improves surgical outcomes.[53]Batra PS, Ryan MW, Sindwani R, et al. Balloon catheter technology in rhinology: reviewing the evidence. Laryngoscope. 2011 Jan;121(1):226-32.
http://www.ncbi.nlm.nih.gov/pubmed/20824793?tool=bestpractice.com
Drug eluting implants
Bioabsorbable stents eluting the corticosteroid mometasone have shown promise as an adjunct treatment in the setting of endoscopic sinus surgery. These implants may be placed into surgically opened sinus cavities and may reduce inflammation and scarring and promote wound healing.[54]Forwith KD, Chandra RK, Yun PT, et al. ADVANCE: a multisite trial of bioabsorbable steroid-eluting sinus implants. Laryngoscope. 2011 Nov;121(11):2473-80.
https://www.doi.org/10.1002/lary.22228
http://www.ncbi.nlm.nih.gov/pubmed/22020898?tool=bestpractice.com
[55]Han JK, Forwith KD, Smith TL, et al. RESOLVE: a randomized, controlled, blinded study of bioabsorbable steroid-eluting sinus implants for in-office treatment of recurrent sinonasal polyposis. Int Forum Allergy Rhinol. 2014 Nov;4(11):861-70.
https://www.doi.org/10.1002/alr.21426
http://www.ncbi.nlm.nih.gov/pubmed/25266981?tool=bestpractice.com
[56]Smith TL, Singh A, Luong A, et al. Randomized controlled trial of a bioabsorbable steroid-releasing implant in the frontal sinus opening. Laryngoscope. 2016 Dec;126(12):2659-64.
https://www.doi.org/10.1002/lary.26140
http://www.ncbi.nlm.nih.gov/pubmed/27363723?tool=bestpractice.com
These adjuncts may also reduce the need for additional postoperative oral corticosteroids and their potential complications.[57]Dautremont JF, Mechor B, Rudmik L. The role of immediate postoperative systemic corticosteroids when utilizing a steroid-eluting spacer following sinus surgery. Otolaryngol Head Neck Surg. 2014 Apr;150(4):689-95.
https://www.doi.org/10.1177/0194599814521373
http://www.ncbi.nlm.nih.gov/pubmed/24482348?tool=bestpractice.com
More recently, corticosteroid eluting implants have been developed for placement in the office, providing up to 24 weeks of symptomatic benefit.[58]Cervin A, Rimmer J, Wrobel A, et al. Long-acting implantable corticosteroid matrix for chronic rhinosinusitis: results of LANTERN Phase 2 randomized controlled study. Int Forum Allergy Rhinol. 2022 Feb;12(2):147-59.
https://www.doi.org/10.1002/alr.22883
http://www.ncbi.nlm.nih.gov/pubmed/34534410?tool=bestpractice.com
Given these findings, the American Academy of Otolaryngology-Head and Neck Surgery considers corticosteroid eluting implants as a proven and therapeutic option for mucosal inflammation.[59]American Academy of Otolaryngology-Head and Neck Surgery. Position statement: drug-eluting sinus implants. Jan 2023 [internet publication].
https://www.entnet.org/resource/position-statement-eluting-implants
Exhalational delivery system with fluticasone
While topical corticosteroids are a mainstay in the medical management of chronic rhinosinusitis, with and without nasal polyposis, there are some concerns regarding the ability of traditional nasal sprays to adequately deliver medications to the sinus cavities. A recently developed exhalational delivery system for intranasal application of high-dose fluticasone is showing promising early evidence of benefit in patients, with and without nasal polyposis, who have not responded to traditional topical corticosteroids.[60]Sindwani R, Han JK, Soteres DF, et al. NAVIGATE I: randomized, placebo-controlled, double-blind trial of the exhalation delivery system with fluticasone for chronic rhinosinusitis with nasal polyps. Am J Rhinol Allergy. 2019 Jan;33(1):69-82.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6604249
http://www.ncbi.nlm.nih.gov/pubmed/30477309?tool=bestpractice.com
[61]Leopold DA, Elkayam D, Messina JC, et al. NAVIGATE II: Randomized, double-blind trial of the exhalation delivery system with fluticasone for nasal polyposis. J Allergy Clin Immunol. 2019 Jan;143(1):126-34.e5.
https://www.jacionline.org/article/S0091-6749(18)30863-7/fulltext
http://www.ncbi.nlm.nih.gov/pubmed/29928924?tool=bestpractice.com
[62]Palmer JN, Jacobson KW, Messina JC, et al. EXHANCE-12: 1-year study of the exhalation delivery system with fluticasone (EDS-FLU) in chronic rhinosinusitis. Int Forum Allergy Rhinol. 2018 Jun 1;8(8):869-76.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6099484
http://www.ncbi.nlm.nih.gov/pubmed/29856520?tool=bestpractice.com