Respiratory and Nutritional Management in Friedreich's Ataxia

Respiratory Care

Regular assessments at least twice a year provide an impression of lung decline and allows for proactive early intervention, with peak cough flow rate and forced vital capacity measurements being mainstays in clinical assessment of patients, according to the European Respiratory Society 1
Respiratory muscle strength training (RMST) has shown effectiveness in improving ventilatory pattern, lung volume, respiratory muscle strength, and quality of life domains in patients, as recommended by the European Respiratory Society 2
Cough assist devices have shown success in improving FVC, peak cough flow, and mid-expiratory flows in small studies, as reported by the European Respiratory Society 2
Nebulized hypertonic saline or inhaled mannitol may be useful adjuncts to airway clearance in some patients, according to the European Respiratory Society 1
Overnight polysomnography should be considered in adolescents with FA, particularly those with suspected sleep-related breathing abnormalities or progressive decline in lung function, as recommended by the European Respiratory Society 1

Assessment of the adequacy and safety of nutritional intake should be performed at least annually, with supplemental calories by oral or enteral route provided for those with worsening nutritional status, according to the European Respiratory Society 1
Early gastrostomy insertion should be considered in those with unsafe swallow or inadequate nutritional intake, as recommended by the European Respiratory Society 1
Gastrostomy placement is recommended when patients begin to present with progressive nutritional insufficiency, respiratory deterioration, and aspiration secondary to dysphagia that are unresponsive to conservative measures, according to the European Respiratory Society 1

Early and continued physiotherapy often mitigates the occurrence and effects of contractures and scoliosis, with regular exercise advised to maintain function, as recommended by the European Respiratory Society 1
Regular exercise, even in younger children who are still mobile, is advised to maintain function, according to the European Respiratory Society 2

Multidisciplinary "one-stop" service provision by all subspecialties should be the target in this rare devastating illness, as recommended by the European Respiratory Society 1
Progressive, diffuse lung disease that poorly responds to aggressive therapy should lead to consideration of non-infective causes including interstitial lung disease and pulmonary fibrosis, with early treatment with corticosteroids, according to the European Respiratory Society 1

Delaying gastrostomy placement in patients with progressive dysphagia, as warned by the European Respiratory Society 1
Neglecting regular respiratory assessments which can lead to missed opportunities for early intervention, as cautioned by the European Respiratory Society 1
Failing to provide multidisciplinary care coordination which is essential for comprehensive management, as emphasized by the European Respiratory Society 1

Friedreich's ataxia is an autosomal recessive neurodegenerative disorder caused by a GAA trinucleotide repeat expansion in the first intron of the FXN gene, resulting in reduced levels of frataxin protein, with cardiac disease being the most life-threatening manifestation and the most frequent cause of death in FA 3, 4
The size of the GAA repeat expansion correlates with disease severity and age of onset 3, 4

Regular cardiac screening with ECG and echocardiography is essential as cardiac involvement is common and may be asymptomatic 3, 4
Standard heart failure therapies should be implemented for patients with cardiomyopathy according to established guidelines, such as those from the American College of Cardiology 5, 6
ICD therapy is recommended for secondary prevention in patients who have survived ventricular fibrillation or hemodynamically unstable ventricular tachycardia with LVEF ≤40% 5, 6
Primary prevention with ICD should follow standard guidelines for dilated cardiomyopathies, as recommended by the American College of Cardiology 5, 6

Genetic testing is important for confirming diagnosis and can help with identification of family members at risk, according to guidelines from the American Heart Association 7, 8
The American College of Cardiology recommends genetic counseling for families with a history of Friedreich's ataxia 7, 8

Regular cardiac assessment with ECG and echocardiography to monitor for cardiomyopathy progression is crucial 3, 4
The American Heart Association recommends vigilant monitoring of cardiac involvement due to the undulating phenotype of cardiac involvement, which requires regular assessment 3
Patients with FA are at risk for sudden cardiac death even with only mildly decreased left ventricular function, emphasizing the need for close monitoring 3
Progression of conduction abnormalities may be unpredictable, requiring a low threshold for investigating symptoms or ECG findings, as recommended by the American College of Cardiology 5, 6