The nasal cavity (or nasal fossa) is a large air filled space above and behind the nose in the middle of the face.Each cavity is the continuation of one of the two nostrils.he nasal cavity (or nasal fossa) is a large air filled space above and behind the nose in the middle of the face.
Polymyxin B sulfate and trimethoprim (Polytrim) is an antibacterial eye drop prescribed to treat bacterial conjunctiivitis and blepharoconjunctivitis of the eyes. Side effects, drug interactions, pregnancy safety, dosage, and storage information should be reivewed prior to using this medication.
Trimethoprim-sulfamethoxazole (TMP-SMX) has been demonstrated to be effective for prophylaxis against PCP for children with cancer and for adults with HIV infection. It is systemically active against Pneumocystis carinii, and there is longstanding experience with the drug for prophylaxis for children.