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  • Title: A novel therapeutic use of HFA-BDP metereddose inhaler for asthmatic patients with rhinosinusitis: Case series.
    Author: Kobayashi Y, Asako M, Kanda A, Tomoda K, Yasuba H.
    Journal: Int J Clin Pharmacol Ther; 2014 Oct; 52(10):914-9. PubMed ID: 25074867.
    Abstract:
    OBJECTIVE: Most asthmatics have been found to have rhinosinusitis (RS). Patients with ethmoid sinusitis, in particular, often suffer from an impaired sense of smell; this is clinically important and necessitates concurrent treatment for both asthma and RS. As a rational therapeutic strategy, we focused on a fine particle HFA-134abeclomethasone dipropionate (HFA-BDP) metered-dose inhaler. Because of its small size, the medication is still present in the exhaled breath after inhalation. METHODS: Five mild-to-moderate asthmatics with ethomoidpredominant sinusitis characterized by an impaired sense of smell and mild peripheral blood eosinophilia received a single-agent treatment with orally-inhaled HFA-BDP which was then exhaled through the nose. In addition, the stained small particles were created by an ultrasonic nebulizer and flow image of them during oral inhalation and nasal exhalation was evaluated by using nasal endoscopy. RESULTS: After treatment, the sense of smell was restored in all cases with a concomitant improvement in sinusitis as confirmed by computerized tomography. In addition, amelioration of peripheral blood eosinophilia as well as small airway obstruction as indicated by pulmonary function tests was observed. Macroscopical imaging revealed that small particles flow toward olfactory cleft during both the inhalation and exhalation phases. CONCLUSION: We have presented 5 cases of asthmatic patients with RS treated with a concurrent single therapy, HFA-BDP exhaled through the nose (ETN). A clinical trial must be considered to establish this new therapeutic strategy based on the concept of "one airway, one disease."
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