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  • Title: A comparative analysis of the decongestive effect of oxymetazoline and xylometazoline in healthy subjects.
    Author: Eskiizmir G, Hirçin Z, Ozyurt B, Unlü H.
    Journal: Eur J Clin Pharmacol; 2011 Jan; 67(1):19-23. PubMed ID: 21069518.
    Abstract:
    BACKGROUND: Oxymetazoline and xylometazoline are locally effective and direct acting drugs that relieve nasal congestion. The aim of this study was to objectively determine and compare the decongestive effects of oxymetazoline and xylometazoline in healthy subjects. METHODS: The study population comprised thirty healthy adults. All subjects underwent active anterior rhinomanometry (AARhm) and acoustic rhinometry (AR) tests following the application of oxymetazoline, xylometazoline, or placebo (physiological saline). The change in nasal resistance, nasal airflow, and different cross-sectional areas (CSAs) of the nasal cavity in the subjects were examined for each solution separately. The measurements were obtained over a 1-h period (baseline and 1, 15, 30, and 60 min post-dosing). All results were analyzed using the Kruskal-Wallis test and the Mann-Whitney U test. RESULTS: A total of 6,300 measurements of AARhm and AR were obtained. The application of placebo did not cause a statistically significant change in nasal resistance, nasal airflow, and CSAs (CSA1, 2, and 3, respectively) of the nasal cavity. In contrast, statistically significant changes in nasal resistance (inspiration p = 0.000 and p = 0.004; expiration p = 0.000 and p = 0.000), nasal airflow (inspiration p = 0.000 and p = 0.004; expiration p = 0.000 and p = 0.000), and CSAs of the nasal cavity (CSA2 p = 0.000 and p = 0.000, CSA3 p = 0.000 and p = 0.00), with the exception of CSA1 (p = 0.982 and p = 0.994), were obtained after the application of oxymetazoline and xylometazoline. A comparison of oxymetazoline and xylometazoline based on nasal resistance, nasal airflow, and CSAs of the nasal cavity demonstrated no statistically significant difference, except for CSA3. CONCLUSION: Oxymetazoline and xylometazoline are fast-acting and potent topical decongestants that have similar decongestive effects.
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