Airway Suctioning
Key Points
- Suctioning is indicated when secretions, blood, or other material cannot be cleared effectively by cough.
- Perform suctioning based on clinical need (for example oxygenation decline, visible or audible secretions), not routine fixed intervals.
- Closed suctioning is preferred for ventilated patients because it avoids ventilator disconnection and reduces adverse events.
- Safety limits include pass duration under 15 seconds, recovery period 30-60 seconds between passes, and age-based pressure settings.
Pathophysiology
Retained airway secretions narrow lumen diameter, increase airway resistance, and impair gas exchange. As secretion burden rises, the risk of atelectasis and hypoxemia increases, especially in patients with weak cough or artificial airways.
Suctioning restores patency by mechanically removing obstructive material from the oropharynx, nasopharynx, trachea, or artificial airway. Technique errors, however, can injure mucosa, worsen hypoxemia, and increase infection risk if sterile handling is not maintained.
Classification
- Open oral suctioning: Uses a rigid yankauer-suction-tip to remove oral secretions.
- Open nasopharyngeal or nasotracheal suctioning: Uses sterile flexible catheter via nares when oral suctioning is insufficient.
- Closed in-line suctioning: Catheter integrated into ventilator circuit to reduce circuit disconnection and airway collapse risk.
- Depth strategy: Superficial suctioning (to end of artificial airway) is preferred over deep suctioning to limit mucosal trauma.
Nursing Assessment
NCLEX Focus
Priority questions test when suctioning is truly indicated and which parameters define safe technique.
- Assess for audible or visible retained secretions despite best cough effort.
- Monitor pulse oximetry, respiratory rate, heart rate, and other available continuous parameters before and during suctioning.
- Determine airway route and device selection (Yankauer, sterile open catheter, or closed in-line system) based on patient condition.
- Reassess for post-procedure hypoxemia, trauma signs, and secretion clearance effectiveness.
Nursing Interventions
- Educate awake patients about expected discomfort and procedure steps before suctioning.
- Preoxygenate with 100% FiO2 before lower-airway suctioning.
- Use sterile technique with single-use gloves and sterile catheters for open/nasotracheal suctioning.
- Limit catheter insertion depth to no more than tip of the artificial airway when suctioning through ETT/tracheostomy.
- Apply age-appropriate suction pressure: adults -100 to -120 mm Hg, children -80 to -100 mm Hg, infants -60 to -80 mm Hg.
- Keep each pass under 15 seconds and allow 30-60 seconds recovery between passes.
Hypoxemia and Trauma Risk
Prolonged passes, excessive pressure, or deep insertion increase hypoxemia, mucosal bleeding, and airway injury.
Pharmacology
| Drug Class | Examples | Key Nursing Considerations |
|---|---|---|
| oxygen-therapy | Preoxygenation before suctioning | Use 100% FiO2 preoxygenation for lower-airway suctioning and monitor SpO2 response. |
| mucolytics | Secretion-thinning therapy context | Thick secretions may require adjunct secretion-management planning with suction intervals based on assessment. |
Clinical Judgment Application
Clinical Scenario
A ventilated adult develops coarse breath sounds, dropping oxygen saturation, and visible secretions in the artificial airway.
Recognize Cues: SpO2 decline and persistent secretions indicate airway obstruction risk. Analyze Cues: Immediate suctioning is needed, with preference for in-line technique due to ventilation dependence. Prioritize Hypotheses: Primary problem is secretion-related airflow limitation causing hypoxemia. Generate Solutions: Preoxygenate, use closed suction catheter, apply safe pressure and pass duration limits. Take Action: Perform suction with sterile handling and reassess between short passes. Evaluate Outcomes: Oxygenation and breath sounds improve, and secretion burden decreases.
Related Concepts
- tracheostomy-and-tracheostomy-care - Tracheostomy patency depends on structured secretion management.
- endotracheal-intubation-procedure - Artificial airways require suctioning to maintain patency.
- advanced-airways-and-intubation - Airway escalation planning includes secretion control strategy.
- respiratory-failure - Retained secretions can precipitate deterioration.
- bag-valve-mask-manual-ventilation - Rescue ventilation may be needed around suction events.
Self-Check
- Why is suctioning performed on clinical indication rather than fixed routine timing?
- Which pressure range is recommended for adult suctioning, and why does pressure matter?
- When should closed suctioning be preferred over open suctioning?