Airway Suctioning: Technique, Pressure, and Safety

The Core Rules

• Pre-oxygenate: suctioning removes air, so oxygenate before and between passes.
• Suction on withdrawal only: never on insertion, to avoid mucosal trauma.
• Limit each pass: about 10 to 15 seconds to prevent hypoxia.
• Correct pressure and size: too high or too large damages tissue.

Clean vs Sterile

Oropharyngeal suctioning uses clean technique, but tracheal suctioning uses sterile technique because it bypasses the body natural defenses and can introduce pathogens directly into the lower airway. Matching technique to the site is part of doing it safely.

Suctioning is central to tracheostomy care and pairs with oxygen therapy.

Indications and Assessment

Suctioning is done when a patient cannot clear secretions and there is evidence of obstruction, such as noisy breathing, low oxygen readings or visible secretions. It should be based on assessment and not done routinely on a fixed schedule.

Explain the procedure to the patient when possible.

Complications to Watch For

Suctioning can cause low oxygen, tissue trauma, bleeding, coughing and changes in heart rate. Limiting the duration of each pass, using appropriate pressure and pre-oxygenating according to protocol reduce risk.

Stop and reassess if the patient deteriorates.

After the Procedure

Reassess breathing, oxygen level and lung sounds. Discard supplies properly, wash hands and document the amount and appearance of secretions.

Report unusual findings such as blood or thick colored secretions.

Equipment Check and Setup

Verify suction pressure, tubing and catheter size before starting. Have oxygen and backup supplies ready.

Follow protocol.

Documenting the Procedure

Record secretion amount, color, patient tolerance and any complications. Report changes.

Reassess after suctioning.

When Suctioning Is Needed

Suctioning removes secretions, blood or vomit from the airway when a patient cannot clear them alone. It is indicated when there are audible gurgling sounds, visible secretions, decreased oxygen saturation or increased work of breathing. It should not be done on a fixed schedule, because unnecessary suctioning causes irritation and can lower oxygen levels.

Clinicians must assess before acting. Listening to breath sounds, checking oxygen saturation and observing effort help decide whether suctioning is warranted and which route is appropriate.

Oral, Nasal and Tracheal Routes

Oral suctioning uses a rigid or flexible catheter in the mouth and is common in emergency care. Nasopharyngeal suctioning reaches deeper secretions through the nose. Tracheal suctioning through an artificial airway requires sterile technique, because the airway is normally protected from the environment.

Each route has its own depth guidance, catheter size and risks. Using the wrong technique for the route can cause injury or infection.

Equipment and Pressure Settings

Check that the suction unit works, the tubing is connected, the canister is not full and the pressure is set within recommended ranges. Have the correct catheter size, gloves, saline if used and oxygen supplies ready.

Excessive pressure damages tissue, while too little fails to clear the airway. Verifying settings before the procedure prevents both problems.

Technique and Timing

Suctioning time should be brief, since the patient is not receiving oxygen while the catheter is in place. Apply suction while withdrawing the catheter, with gentle rotation if the protocol allows, and limit the duration according to policy.

Preoxygenate when appropriate and allow recovery between passes. Watching the patient throughout is more important than completing a set number of passes.

Complications and Warning Signs

Hypoxia, bradycardia, bleeding, airway spasm and infection are recognized risks. Signs such as falling oxygen saturation, changing heart rate, color change or distress require immediate action.

Stop the procedure, provide oxygen and call for help as needed. Knowing the plan before a complication occurs shortens response time.

Infection Control and Documentation

Hand hygiene, gloves and, for airway procedures, appropriate protective equipment reduce transmission risk. Single use catheters should be discarded after use.

Record the reason for suctioning, the amount and character of secretions, the patient's response and any complications. Documentation supports continuity of care.

Practice and Competence

Suctioning is a skill best learned through supervised practice. Learners should rehearse the full sequence, including assessment, setup, technique and monitoring.

Simulation gives repeated practice with realistic complications and immediate feedback, so learners approach real patients with steady confidence.

When Suctioning Is Indicated

Suctioning is performed for visible or audible secretions and signs of obstruction, not on a routine schedule.

Unnecessary suctioning causes trauma, hypoxia and distress.

Indications and permitted scope should be confirmed with local clinical policy.

Scope and Competence

Which staff may suction, and by which route, differs by role, setting and jurisdiction.

Deep suctioning generally carries stricter competence requirements than oral suctioning.

Scope of practice should be confirmed with the relevant regulator and employer policy.

Preparation

Equipment check, suction pressure setting, catheter size selection and oxygenation are completed before starting.

Catheter size relative to the airway affects both effectiveness and hypoxia risk.

Clean or sterile technique is determined by route and by local policy.

Performing the Procedure

Suction is applied on withdrawal, and duration per pass is limited.

Monitoring oxygen saturation and patient response during the procedure is part of it.

Recovery and reoxygenation between passes is required rather than optional.

Complications

Hypoxia, bradycardia, mucosal trauma, bleeding and infection are the recognized complications.

Recognizing deterioration and stopping is a competence in itself.

Applicable infection control and clinical governance requirements should be confirmed with the relevant authority.

Documentation and Competence

Indication, technique, secretions and patient response are documented each time.

Simulation and structured practice let clinicians rehearse the procedure before performing it on patients.

Clinical scope, infection control and documentation requirements differ by jurisdiction and change, and current obligations should be confirmed with the relevant regulator.

Common Mistakes and How to Avoid Them

Common errors include suctioning on a schedule rather than on indication, excessive suction pressure, prolonged passes without reoxygenation and using an oversized catheter.

Supervisors can help by making it acceptable to pause and ask. A culture where questions are treated as competence rather than weakness produces fewer errors in airway suctioning.

How Employers Evaluate Readiness

Employers assess this through competence assessment records, complication and incident reports, infection surveillance, documentation quality and audit findings.

Keeping Skills Current

Equipment, policies and guidance change. Reconfirming local policy prevents performing a technique the organization has since revised.

Planning and Preparation

Preparation includes confirming the indication, checking scope and competence, assembling and testing equipment, setting suction pressure and preoxygenating where indicated.

Documentation That Holds Up

Competence assessment records, clinical documentation of indication and response, incident reports, equipment checks and infection surveillance data are what an audit examines first.

Frequently Asked Questions