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  • Title: Modified forced expiration technique using expiratory resistance in adults with cystic fibrosis.
    Author: Watson K, Koenig E, Bannister A, Mayne V, Jacques A, Sawyer A, Wood J.
    Journal: Clin Respir J; 2023 Nov; 17(11):1196-1199. PubMed ID: 37793978.
    Abstract:
    BACKGROUND: Participation in airway clearance techniques (ACT) is important to minimise development of irreversible airway obstruction in patients with cystic fibrosis (CF). Positive expiratory pressure (PEP) and expiratory resistance devices (ERD) are often used as they can improve collateral ventilation and aid in the shearing of mucus from airways. This project looked to identify whether utilising an ERD during a forced expiration technique (FET) improves ease of expectoration, sputum amount and coughing frequency in patients with CF. METHOD: Patients with CF admitted for a respiratory exacerbation completed two sessions of 10 cycles of their usual ACT with half of the FET components performed with an ERD, half with FET alone. RESULTS: EOE, sputum wet weight, cough frequency and patient preference were similar between groups. Improved EOE without the ERD was found in participants who usually use PEP for their ACT regime. CONCLUSION: Combining the FET with a PEP mask did not improve EOE and other outcomes in this small study. Investigating the efficacy of this technique within a larger population is warranted.
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