Conversation: The conversation between human and AI assistant.
[|Human|] My 69 year old husband has had a persistent cough for about a year.  He has had antibiotics, steroid sprays, nasal washes, two visits to the ENT department, where his throat was viewed by camera. We realise now that this cough started sometime around last November after a complicated tooth extraction.  He was in the chair for 45 minutes, and the dentist was unable to extract the tooth.  He was referred to another dental surgeon who successfully removed the tooth.  Could there be a connection with the onset of this cough and the dental extraction.
[|AI|]  Hi welcome to Chat Doctor... Noted you have persistent cough since 1 year.... So here it needs to be investigated. Tooth extraction not directly lead cough. But if chronic bronchitis is present then cough can be persistent.... Here as it is since one year, causes like malignancy, chronic bronchitis, chronic obstructive lung disease etc.ruled out... Do sputum examinationChest x-ray Pulmonary function test for further work up. According cause treatment done.... Take care. Chat Doctor.