Nasal decongestant sprays. Topical nasal decongestants can be helpful if used for no more than three to four days. Antihistamines. Nasal decongestants and antihistamines. Topical nasal corticosteroids.Sinusitis is an inflammation or swelling of the tissue lining the sinuses. Healthy sinuses are filled with air. But when they become blocked and filled with fluid, germs can grow and cause an infection. Your sinuses are air spaces in your skull and facial bones that make up the upper part of your respiratory tract from your nose into your throat .In order to accurately guide doctors as they navigate patients' unique sinus anatomy, an innovative advancement in endoscopic sinus surgery. Intersect ENT creates and advances clinically proven ear, nose and throat therapy solutions to enhance surgical procedures and improve outcomes for patients. Sinus surgery is a procedure that aims to open the pathways of the sinuses and clear blockages.