8.2 Suctioning Principles During Resuscitation

Suctioning Is a Tool, Not a Default Ceremony

Airway suctioning appears in almost every NRP skill station, equipment check, and knowledge exam—yet it is also one of the most misused interventions. Teams either under-suction (leaving thick material that blocks airflow) or over-suction (ritual mouth and nose toilet of vigorous babies, or multi-minute catheter work while an apneic infant waits for the first effective breath).

This section defines when suction helps, how to do it safely, how bulb and catheter methods differ, what pressure is appropriate, and how to keep ventilation priority intact when secretions and apnea compete for your attention.

When to Suction (Indications)

Clear the airway if needed. “If needed” is not a throwaway phrase—it is the clinical filter.

Appropriate reasons to suction

• Visible secretions, blood, or meconium that appear to obstruct the mouth, nose, or pharynx.
• Poor air entry or failed chest rise during PPV when secretions are a plausible obstruction (the S in MR SOPA).
• Need for a clear path to deliver effective mask or advanced-airway ventilation when material is pooling.
• After certain airway procedures when blood or secretions accumulate (context-dependent).

Not appropriate as a free-standing ritual

• Routine suctioning of every vigorous newborn simply because the baby was born.
• Deep pharyngeal suction “for culture” or “just in case” without obstruction signs.
• Prolonged multi-pass suction before acknowledging that the baby needs PPV now.
• Automatic suction solely because fluid was meconium-stained in a vigorous infant.

Mouth Before Nose: Non-Negotiable Order

When you suction the nose first, infants often gasp. A gasp with a mouth still full of secretions can draw material into the airway. Therefore NRP teaching is consistent and testable:

1. Mouth first
2. Nose second

This order appears in initial steps, MR SOPA “S,” and equipment skills checklists. If you remember only one mechanical detail from this section, remember mouth before nose.

Practical technique notes

• Position the head in the sniffing position so the pharynx is open; suction does not fix extreme flexion or hyperextension.
• Limit the depth and duration of each pass; you are clearing an obstruction, not performing a continuous vacuum of the entire airway tree.
• Watch the monitor and the baby: if heart rate falls during suction, stop, support ventilation, and reassess.
• Coordinate with the team: someone should still be tracking time and preparing PPV rather than everyone staring into the oropharynx.

Brief Passes: Why Prolonged Suction Is Harmful

Prolonged suction creates two failures at once:

1. Physiologic harm — deep or lengthy suction can stimulate the vagus nerve, producing bradycardia and apnea, and can injure mucosa.
2. Operational harm — every extra second of non-therapeutic suction is a second of delayed lung inflation for an infant who needs PPV.

Exam language often frames this as: suction only as needed; keep it brief; do not let suction delay ventilation.

A useful mental timer

Think in seconds, not minutes. A few directed passes to clear visible obstruction can be appropriate. Continuous suctioning through the entire first minute while the infant remains apneic is a classic Golden Minute failure pattern.

Bulb Syringe vs Suction Catheter

Both tools appear on the equipment checklist; they are complementary, not rivals.

Bulb syringe

• Best for simple mouth and nose clearance of modest secretions when indicated.
• Portable, fast, no wall vacuum required.
• Limited for thick, deep, or high-volume material and not a substitute for catheter suction when obstruction is substantial or when you need controlled catheter suction of the oropharynx/ET tube pathway.
• Still follows mouth-before-nose logic when both are cleared.

Suction catheter (wall or portable vacuum)

• Used when more effective clearance is needed, including during corrective steps for ineffective ventilation and when secretions are thicker or more copious.
• Requires a function-checked suction source set to a safe pressure.
• Catheter size should fit the infant (term vs preterm inventory readiness matters).
• Can also support suctioning through an endotracheal tube when obstruction within the tube or lower airway management requires it—context dependent and not the same as routine meconium tracheal toilet.

Equipment readiness pairs with clinical restraint

Having suction ready does not mean using it on everyone. The pre-birth check confirms wall/portable suction works and is set safely; clinical judgment decides whether a given baby needs it.

Suction Pressure: Approximately 80–100 mm Hg

For catheter suction in newborns, NRP teaching commonly targets about 80–100 mm Hg of negative pressure. That range is high enough to clear secretions and low enough to reduce the risk of mucosal trauma and excessive vagal stimulation compared with unrestricted maximum vacuum.

Exam traps include:

• “Whatever maximum the machine allows.”
• Adult-style high vacuum without a neonatal limit concept.
• Untested suction that only fails when the depressed baby arrives.

If your unit’s device displays different units, know the institutional conversion and verify the setting before birth, not during the first failed PPV attempt.

Secretions vs Immediate PPV: How to Prioritize

This is the decision point that separates competent resuscitation from busy-looking delay.

Prioritize suction (briefly) when obstruction is the problem

If the mouth is filled with blood or thick material, air cannot enter, and mask PPV will fail until the path is open. A short, purposeful mouth-then-nose clearance is part of opening the airway—just as positioning is.

Prioritize PPV when the baby is apneic/bradycardic and the airway is not clearly obstructed

If the infant is not breathing or heart rate is low, and you do not see obstructing secretions, start PPV. Do not invent a prolonged suction session to “optimize” an already clear-looking airway. Ventilation of the lungs is the single most important action for most compromised newborns.

When both are true

Real life often mixes both needs: some secretions and apnea. The sequence is still coherent:

1. Position the airway.
2. Briefly clear visible obstruction (mouth then nose).
3. Begin or resume PPV immediately.
4. If chest does not rise, run corrective steps—including suction again if secretions remain plausible—rather than freezing on one intervention.

Link to meconium teaching

Meconium may be the obstructing material. Selective suction for obstruction remains appropriate. What remains inappropriate is converting every meconium delivery into minutes of suction theater that postpones the first effective breath.

Suction Inside the Broader Algorithm

Place suction in the correct “layer” of NRP so it never displaces higher priorities.

1. Pre-birth: check bulb + suction source/pressure + catheters.
2. Initial steps: clear airway if needed (mouth before nose).
3. PPV start: do not withhold for non-obstructing fluid.
4. Ineffective ventilation: MR SOPA includes Suction mouth/nose when indicated.
5. Advanced airway: suction may assist visualization or tube patency; intubation itself follows standard indications—not meconium-only ritual.

Notice the pattern: suction is conditional at every layer.

Team Skills and Common Human Errors

Errors of commission (doing too much)

• Suctioning vigorous crying newborns “because the fluid looked dirty.”
• Deep aggressive passes that trigger bradycardia.
• Multiple operators suctioning while nobody starts the timer for PPV reassessment.
• Nose-first habit from adult airway practice.

Errors of omission (doing too little or too late)

• Ignoring large clots or thick material and expecting mask PPV to work through a blocked oropharynx.
• Forgetting to function-check suction until it is needed.
• Setting pressure too high and injuring mucosa, or too low and failing to clear obstruction.

Communication fixes

• “Mouth then nose, two brief passes—then I bag.”
• “Airway looks clear; starting PPV now.”
• “No chest rise—suction mouth/nose, then reseat mask.”

Explicit words prevent parallel chaos where one person suctions endlessly while another waits for a perfect view.

Special Situations

Blood from maternal bleeding or birth trauma

Blood can look dramatic and may truly obstruct. Clear what blocks the airway, then ventilate. Do not confuse maternal blood on the face with a need for prolonged deep suction after the path is open.

Preterm infants

Preterm airways are smaller and more fragile. Gentle technique, correct catheter size, brief passes, and thermal protection still apply. Prematurity increases the chance of needing support but does not justify unrestricted vacuum or routine deep suction of every preterm infant.

During chest compressions pathway

If the team has escalated because heart rate remains low after ventilation efforts, do not restart a long suction ritual that interrupts coordinated resuscitation. Address obstruction quickly if it is the reason ventilation fails; otherwise keep the compression–ventilation cadence and advanced airway plan on track.

Scenario Drill Set

Scenario 1 — Vigorous newborn, light oral mucus.
No routine suction. Observe breathing and tone. Wrong: deep catheter suction “to prevent aspiration.”

Scenario 2 — Apneic infant, airway appears clear.
Initial steps including positioning; start PPV for apnea. Wrong: 45 seconds of exploratory suction first.

Scenario 3 — Copious secretions, poor air entry during PPV.
Mouth-then-nose suction as a corrective step; resume ventilation; escalate if needed. Wrong: ignore secretions forever or suction without ever returning to PPV.

Scenario 4 — Suction during initial steps causes HR to drop.
Stop prolonged suction, support with PPV as indicated, reassess. Wrong: continue deep suction despite progressive bradycardia.

Scenario 5 — Equipment check finds suction at maximum unrestricted vacuum.
Reset to approximately 80–100 mm Hg before birth. Wrong: leave it maxed “so it works better.”

Exam Checklist: Suctioning Principles

• Indication: obstruction or need to clear path for ventilation—not routine for all.
• Order: mouth before nose.
• Duration: brief; avoid delay of PPV.
• Pressure: about 80–100 mm Hg for catheters.
• Tools: bulb for simple clearance; catheter/vacuum for more effective suction when needed.
• Priority: secretions vs PPV—obstruction gets brief clearing; apnea/bradycardia with clear airway gets ventilation now.
• Meconium link: selective suction yes; routine intubation-for-suction-only no.

Bottom Line

Suctioning is precise supportive care. Clear the airway when secretions, blood, or meconium obstruct; mouth before nose; keep passes short; set catheter suction near 80–100 mm Hg; use bulb or catheter appropriately. When immediate PPV is needed and the airway is not obstructed, ventilate first. Skillful suction protects the airway; ritual suction steals the Golden Minute.