Lung Expansion, Secretion Clearance, Suctioning, and Tracheostomy Care Concepts

1. Promoting lung expansion

Lung expansion keeps alveoli open so gas exchange can occur. Positioning — sitting upright, or turning and repositioning — reduces pressure on the diaphragm. Coughing and deep breathing expand the lungs and move secretions upward. Incentive spirometry uses a device that gives visual feedback to encourage slow, deep, sustained breaths, preventing atelectasis (alveolar collapse) without medication. These are conceptual supports practiced per approved checklists and policy.

2. Clearing secretions

Secretions (mucus) trap inhaled particles, but when thick or excessive they obstruct airflow. Hydration thins secretions, and humidification adds moisture to inspired air. Chest physiotherapy uses percussion and vibration over the chest wall to loosen secretions, and postural drainage uses gravity-assisted positions to drain specific lung segments. When a person cannot clear secretions independently, suctioning removes them through a catheter: oropharyngeal (mouth and throat), nasopharyngeal (nose and throat), endotracheal (through an endotracheal tube), and tracheostomy (through a tracheostomy tube). Suctioning is performed only as needed, by trained personnel, because it removes oxygen along with secretions.

3. Tracheostomy care

A tracheostomy is a surgical opening (stoma) in the neck into the trachea, holding a tube that bypasses the upper airway. Tracheostomy care keeps the stoma and tube clean and patent. The inner cannula is the removable inner part of the tube, cleaned or replaced to prevent obstruction. Ties (or a holder) secure the tube against dislodgement while leaving enough room to avoid skin breakdown or circulation problems. Technique follows a sterile-versus-clean variation — suctioning below the stoma is typically sterile, while routine stoma and skin care may be clean — defined by institutional policy. Oxygenation monitoring (pulse oximetry and observation) is continuous during these procedures.

How it works

1. Deep breathing, coughing, incentive spirometry, and positioning keep alveoli open and move secretions upward.
2. Hydration and humidification thin secretions; chest physiotherapy and postural drainage loosen them.
3. When coughing cannot clear the airway, suctioning removes secretions by the appropriate route (oropharyngeal, nasopharyngeal, endotracheal, or tracheostomy).
4. For a tracheostomy, routine care keeps the stoma and inner cannula clean and patent, and secure ties prevent dislodgement.
5. Oxygenation is monitored throughout, because these procedures can transiently reduce oxygen delivery.

Common confusions

Memory aids

For the four basics remember "C-D-I-H" — "Cough, Deep-breathe, Incentive, Hydrate." For suctioning routes, top-to-bottom: O-N-E-T — Oropharyngeal, Nasopharyngeal, Endotracheal, Tracheostomy.

Quick review

Topic Recap

• Lung expansion is supported by positioning, coughing, deep breathing, and incentive spirometry.
• Secretion clearance relies on hydration, humidification, chest physiotherapy, postural drainage, and suctioning.
• Suctioning routes differ by depth and sterility: oropharyngeal, nasopharyngeal, endotracheal, tracheostomy.
• Tracheostomy care centers on the inner cannula, secure ties, and defined sterile-versus-clean technique.
• Oxygenation monitoring accompanies all airway procedures.

Knowledge Check

1. What is the main purpose of incentive spirometry?
2. Why is suctioning performed only when necessary rather than on a fixed schedule?
3. How does hydration help clear secretions?
4. What is the role of the inner cannula in tracheostomy care?
5. Why is suctioning below an artificial airway typically performed with sterile technique?

Answers and Rationales

1. Answer: To encourage slow, deep, sustained breaths that keep alveoli open and prevent atelectasis. Why: Sustained inspiration recruits alveoli better than quick, shallow breaths.
2. Answer: Suctioning removes oxygen along with secretions and can injure the airway, so it is done only when secretions impair breathing. Why: This balances clearing against the risks of hypoxia and trauma.
3. Answer: Adequate fluids keep secretions thin and less sticky, making them easier to cough up. Why: Dehydrated mucus is harder to mobilize.
4. Answer: The inner cannula is the removable inner part cleaned or replaced to keep the airway patent. Why: Its blockage can obstruct airflow.
5. Answer: It enters below the body's natural defenses into the lower airway, where sterile technique reduces infection risk. Why: Deeper access demands sterile technique, as defined by policy.