Cough Assist Machines for Children: Benefits, Types & Usage Guide
A cough assist device (mechanical insufflation-exsufflation, MI-E) simulates a natural cough by cycling positive then negative airway pressure, mobilizing secretions in children with impaired cough (peak cough flow <270 L/min).
Indications
- Neuromuscular disorders (DMD, SMA, spinal cord injury).
- Severe cerebral palsy, post-polio, high-level SCI.
- Post-extubation support; chronic respiratory failure.
Benefits
- Reduces pneumonia/hospitalization by 40–60%.
- Improves oxygenation, sleep quality, secretion clearance.
- Delays tracheostomy/ventilator dependence.
Device Types
- Electric (e.g., Philips CoughAssist E70): Portable, programmable pressures/flows, automatic/manual modes.
- Mechanical (older): Bellows-driven; less precise.
Protocol
- Typical: +40 to +60 cmH₂O insp / –40 to –60 cmH₂O exp; 3–5 cycles × 4–6 sessions/day.
- Interface: Mask, mouthpiece, or tracheostomy adapter.
- Individualized by respiratory therapist/pulmonologist.
Safety & Tolerance
- Side effects: gastric distension, transient desaturation, discomfort.
- Contraindicated: untreated pneumothorax, recent esophageal surgery, hemodynamic instability.
- Training and caregiver competency essential.
Cough assist is a cornerstone of respiratory management in neuromuscular disease — extending life and improving comfort.
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