耳科診療
PSPPシステムは慢性外耳炎、中耳炎の治療概念
「primary, secondary, pre- disposing, and perpetuating の枠組み」
The development and progression of recurrent and/or chronic otitis are multifactorial.
The primary-predisposing-perpetuating (PPP) system is a well-established framework to identify
the primary, predisposing, and perpetuating factors in each case.
More recently, this has been modified to a PSPP/PPPS system to include secondary(s)infections
一次性・素因・持続性・二次感染
耳の内視鏡