Friedreich Ataxia with Impaired Airway Clearance (PECF <270 L/min or FVC <50% Predicted)
In patients with Friedreich ataxia, respiratory involvement — including impaired cough effectiveness and restrictive lung disease — can significantly increase the risk of chest infections and decline in respiratory function. Objective thresholds such as peak expiratory cough flow and forced vital capacity help identify those who require active airway clearance support.
Clinical scenario: Friedreich ataxia with impaired airway clearance, defined by a peak expiratory cough flow (PECF) below 270 L/min or forced vital capacity (FVC) below 50% of predicted, in the context of respiratory muscle weakness and restrictive lung disease.
Treatment approach
The management of impaired airway clearance in this setting centres on assisted coughing and respiratory physiotherapy — interventions aimed at reducing chest infection burden and supporting respiratory function. The full protocol defines the specific indications, modalities, and application for each approach.
References
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In individuals with Friedreich ataxia and impaired airway clearance (PECF < 270 L/min or FVC < 50% predicted), we suggest assisted coughing (mechanical/manual) be implemented to assist in airway clearance and reduce the prevalence of chest infections.
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In people with respiratory weakness and restrictive lung disease with Friedreich ataxia, we conditionally recommend chest physiotherapy to improve respiratory function, reduce prevalence of chest infection, reduce dyspnea and improve airway clearance function.
DOI: 10.1186/s13023-022-02568-3
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