A patient who has been identified as having adult rhinosinusitis (RS) by the American Academy of Otolaryngoloy - Head and Neck Surgery (AAC-HNS) criteria can be further classified based on the temporal nature of the disease.
Requirement:
(1) adult
(2) meets the AAO-HNS criteria for rhinosinusitis
Parameters:
(1) duration of an episode
(2) number of episodes in a year
(3) baseline status after treatment
Duration
Episodes per Year
Baseline Status
Type
< 4 weeks
< 4
resolves completely; no evidence of chronic RS
acute
4 - 12 weeks
subacute
> 12 weeks
chronic
1 - 4 weeks
>= 4
resolves completely; no evidence of chronic RS in interim
recurrent acute
< 4 weeks
evidence of chronic RS before and after
acute exacerbation of chronic
where:
• The original table has acute as <= 4 weeks and chronic as >= 12, but this involves overlap in ranges.
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