Do nasal irrigation and steroid implants improve outcomes for chronic rhinosinusitis?
Chronic rhinosinusitis (CRS) is a long-term inflammation of the sinuses that causes nasal congestion, discharge, and facial pressure. Nasal irrigation (rinsing the sinuses with saline) and steroid implants (tiny devices placed in the sinus that release medication over time) are two treatments used when standard therapies aren't enough. Research shows both can help, but they work in different ways.
What the research says
A 2026 meta-analysis of 9 studies with 1,608 patients found that adjunctive therapies, including nasal irrigation and steroid-eluting implants, improved symptom scores (like SNOT-22) by 30-50% and significantly reduced recurrence rates compared to standard treatment alone 10. This supports the use of both methods as add-on treatments.
Steroid implants have strong evidence from a phase 2 trial called LANTERN. In that study, 67 patients with CRS who had not had sinus surgery received an implant that releases mometasone furoate for up to 24 weeks. The higher dose (7500 μg) led to rapid and lasting symptom improvement, with a 20.8-point drop in SNOT-22 scores (a measure of sinus symptoms) by week 24, compared to 8.8 points with saline irrigation alone 9. The implant was safe and well-tolerated 9.
Nasal irrigation alone also helps. The same meta-analysis included studies where saline irrigation was part of the adjunctive therapy, showing benefit 10. Additionally, a small study of 11 patients used a special dental implant to irrigate the sinus with saline and inject a steroid solution; 9 of 11 patients had complete relief of symptoms like nasal obstruction and discharge by day 30 11. This suggests that direct irrigation plus steroid delivery can be effective.
It's important to note that while these treatments improve symptoms, they don't cure the underlying immune problem. Natural anti-inflammatory products like curcumin may help by targeting immune pathways, but this is still early research 2. Animal models also have limits in mimicking human sinus anatomy, so human studies are key 4.
What to ask your doctor
- Would nasal saline irrigation be a helpful addition to my current treatment plan?
- Am I a candidate for a steroid implant like LYR-210, and is it available at my clinic?
- How long would I need to use irrigation or an implant to see improvement?
- Are there any risks or side effects I should know about with these treatments?
- Can these therapies reduce my need for oral steroids or sinus surgery?
This question is drawn from common patient questions about ENT (Otolaryngology) and answered using cited medical research. We do not provide individualized advice.