ACTIVE POSTERIOR RHINOMANOMETRY SY MEANS OF A FINE NASAL CATHETER FOR OBTAINING POSTNASAL PRESSURE

Abstract

Recent years, active anterior rhinomanometry using a anesthetic face mask is probably more commonly employed than active posterior rhinomanometry because of occasional failure in obtaining the oropharyngeal pressure in the latter method. Thus, in attempt to overcome the disadvantage in active posterior rhinomanometry, we employed a fine nasal catheter(#8F infant feeding nasal catheter)through the nasal cavity instead of a peroral mouth piece.
Nasal resistances in a normal adult were measured by mask active posterior rhinomanometry with a mouth piece or a nasal catheter for obtaining postnasal pressure using Rhinorheograph MPR2100(manufactured by N ihon-Kohden Co., Ltd.).
In adult, no significant differences of unilateral and bilaterel nasal resistances between with the mouth piece and with the nasal catheter were found either on inspiration or expiration.
It could be concluded in this fundamental study that active posterior rhinomanometry with the fine nasal catheter is useful and has no proceduaral ploblems.