Influence of anatomy and head position on intranas

Authors: Paul Merkus Fenna A Ebbens Barbara Muller Wytske J Fokkens

Publish Date: 2006/06/29

Volume: 263, Issue: 9, Pages: 827-832

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Abstract

The objective of this study was to determine the influence of individual anatomical differences on intranasal drug deposition The data of a comparison of seven different administration techniques in ten healthy volunteers was used in this singleblind crossover pilot study After intranasal administration of a dyed test formulation endoscopic video imaging was done on seven nonsequential days The deposition pattern per individual around the head of the middle turbinate was analyzed for each technique and correlated with the individual anatomy Decreased deposition of dyed test formulation in the target area around the head of the middle turbinate was observed in the presence of minor septal deviations narrow nasal valve areas or inferior turbinate hypertrophy a lateral head position helps to bypass a minor septal deviation Although results are preliminary we conclude that anatomy and head position are important factors in the deposition of topical nasal drugs and may be the key to improving individual local nasal steroid treatment

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