
A study employing mass spectrometry has upended assumptions about fluticasone absorption in the sinonasal cavity. Current models suggested drug deposition mainly at the inferior turbinate and nasal valve, but this research reveals significant absorption at various anatomical sites. Among them, the anterior inferior turbinate and ethmoid sinus displayed the highest absorption levels, defying previous estimates. This revelation emphasizes the importance of considering mucociliary clearance and anatomical nuances in understanding intranasal corticosteroid efficacy. Furthermore, revision surgery patients exhibited notably enhanced absorption rates. This study underscores the need for more comprehensive models in nasal drug delivery assessment.
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