SCIRespiratory problems are the leading cause of death after spinal cord injury, especially in the first year and for cervical injuries. The good news: most of the risk comes from one fixable problem — a weak cough that lets mucus build up — and you can manage it.
Why Breathing Is Affected
Breathing uses muscles in your neck, chest, and abdomen. SCI can weaken or paralyze them, which means smaller breaths, a weak cough, and more secretions. Mucus you can't cough out plugs the airways and collapses parts of the lung (atelectasis) — the setup for pneumonia.
What Your Injury Level Means
- C3 and above — the diaphragm is affected; a ventilator may be needed, at least initially.
- C4–C8 — the diaphragm works, but weak chest and abdominal muscles mean a poor cough and reduced lung volume.
- Thoracic injuries — cough strength improves the lower the injury, but mid/high thoracic levels still have a weakened cough.
The higher the injury, the more attention breathing needs — particularly during any cold or chest infection.
Clearing Secretions — the Core Skill
If you can't cough hard, you need help moving mucus out. Common methods:
- Assisted ("quad") cough — a helper pushes inward and upward on your abdomen as you try to cough, adding the force your muscles can't.
- Mechanical insufflation–exsufflation (CoughAssist) — a device that pushes air in, then rapidly pulls it out to simulate a strong cough. Very effective, and worth owning if you have a weak cough.
- Chest physiotherapy / postural drainage — positioning and chest percussion to loosen secretions.
- Suctioning — for those with a tracheostomy or heavy secretions.
- Breathing exercises / incentive spirometry — to keep lung volume up.
Preventing Pneumonia
- Get the flu shot every year and stay current on pneumonia (pneumococcal) and COVID vaccines.
- Don't smoke.
- Stay hydrated to keep mucus thin and easier to clear.
- Do your breathing and cough routine daily, and step it up at the first sign of a cold.
- Stay active and upright when you can — sitting up improves lung expansion.
Ventilators & Long-Term Options
People with the highest injuries may use a ventilator. Many can be weaned off over time, and a tracheostomy (if needed) makes secretion clearance and weaning easier. Diaphragm pacing — implanted electrodes that stimulate the diaphragm — lets some ventilator users breathe without the machine for periods, or fully. Ask a SCI pulmonary specialist what applies to you.
Warning Signs — Act Fast
What Nobody Tells You
- A common cold is not minor. What's a nuisance for others can become pneumonia for you. Escalate your cough routine at the first sniffle.
- A CoughAssist machine is worth fighting for. It's often covered as durable medical equipment and can keep you out of the hospital.
- Teach your caregivers the assisted cough. It's a simple, learnable skill that can prevent an ER trip.
- Vaccines matter more for you. Flu and pneumonia shots are basic, high-impact protection given your risk.
Sources & Further Reading
This page combines lived SCI experience with published clinical guidance, including:
- Respiratory Management Following Spinal Cord Injury — Consortium for Spinal Cord Medicine Clinical Practice Guidelines (Paralyzed Veterans of America)
- Respiratory Health and Spinal Cord Injury — Model Systems Knowledge Translation Center (MSKTC) (see the factsheet library)
- Today's Care — Christopher & Dana Reeve Foundation
SCI.help articles are information, not medical advice. Practice varies by injury level, provider, and institution — always confirm specifics with your own care team.