The drainage of the sinuses
• Frontal, maxillary, anterior ethmiod middle meatus
• Posterior ethmoid superior meatus ostiomeatal complex, OMC (窦口鼻道复合体)
with symptom free intervals if the problem is recurrent, with validation by telephone or interview.
EPOS 2012
CRS Classification in EPOS 2012
Acute Rhinosinusitis (ARS): lasting less than 12 weeks
Chronic Rhinosinusitis (CRS) : lasting more than 1E2POS 2012
ARS Classification in EPOS 2012
Acute rhinosinusitis: <12 weeks;
Acute viral rhinosinusits/Common cold; duration of symptoms for
less than 10 days;
Acute post-viral rhinosinusitis :
increase of symptoms after 5ays with less than 12 weeks duration.
Fokkens WJ, Lund VJ, Mullol J, Bachert C, Alobid I, Baroody F, Cohen N, Cervin A, Douglas R, Gevaerts P, Georgalas C, Goossens H, Harvey R, Hellings P, Hopkins C, Jones N, Joos G, Kalogjera L, Kern B, Kowalski M, Price D, Riechelmann H, Schlosser R, Senior B, Thomas M, Toskala E, Voegels R, Wang DY, Wormald PJ.