Obtain a written baseline and sick-day airway-clearance plan, device settings/training and thresholds for urgent evaluation. Rapid breathing, low oxygen, lethargy or inability to clear secretions can be emergencies.
What this means in real life
Cough assist, or mechanical insufflation-exsufflation, helps move air in and out rapidly to strengthen an ineffective cough and clear secretions. It may be introduced when cough peak flow or respiratory strength declines, before the person feels unable to cough. Regular practice makes the device familiar before an infection, and use often increases during colds or chest illness.
Settings must be individualized and taught by a neuromuscular respiratory team. The plan should coordinate cough assist with breath stacking, suction when prescribed, hydration, ventilation and thresholds for calling. Pulse oximetry can be useful in a written plan but a normal number does not rule out rising carbon dioxide.
Rapid breathing, persistent low oxygen from baseline, inability to clear secretions, blue color, severe fatigue, confusion or reduced alertness needs urgent evaluation. Avoid routine cough suppressants without clinician guidance when secretion clearance is weak.
A practical checklist
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Obtain measured cough/respiratory assessment and prescribed settings.
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Practice when well with user and caregivers.
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Write frequency changes for illness.
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Maintain mask, tubing, filters and backup power.
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Know urgent respiratory thresholds.
Questions to bring with you
Use these at the clinic, school meeting, equipment evaluation, program interview or benefits call. Write down the answers and who owns the next step.
- What measurements indicate cough weakness?
- What pressures and timing are prescribed?
- How often should use increase during illness?
- When is suction or ventilation added?
- Which signs mean emergency care now?
Important safety note
This topic can involve serious or immediate risk. Do not start, stop or change treatment from an online answer. Contact the Duchenne care team; use emergency services for urgent symptoms or danger.
Sources used for this guide
Direct links are included so families can check the original guidance and bring it to qualified professionals.
Content review: July 18, 2026. Medical labels, trials, benefits and programs can change after publication.
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