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Model
What This Guide Helps With
Troubleshooting absent, weak, unstable, or incorrect resuscitation gas flow or airway pressure before assuming an internal pneumatic failure.
Step-by-Step Troubleshooting
1. Ensure Patient Safety First
If the warmer is supporting an infant, immediately notify clinical staff and move resuscitation support to an approved alternate device or manual resuscitation method.
Do not troubleshoot gas-delivery or airway-pressure concerns while the Resuscitaire is being relied upon for patient support.
Expected outcome: The infant is safely supported using known-working equipment before troubleshooting begins.
Why it matters: The Resuscitaire resuscitation module is intended to provide neonatal respiratory support; unreliable gas flow or pressure can directly affect ventilation and oxygen delivery.
2. Confirm the Reported Problem and Installed Configuration
Determine exactly what was reported:
- No gas flow
- Low or unstable flow
- Inability to achieve expected airway pressure
- Abnormal pressure gauge reading
- Oxygen concentration concern on units equipped with a blender
- Problem during T-piece or AutoBreath use, if equipped
Confirm which resuscitation options are installed, because available controls and gas requirements vary by configuration. The optional precision blender provides 21–100% oxygen, and AutoBreath is an optional resuscitation feature on equipped units.
Expected outcome: The failure is clearly identified and matched to the device’s installed resuscitation configuration.
If the reported issue cannot be reproduced: Document the report, complete an appropriate functional check, and return the unit only if performance is confirmed acceptable.
3. Inspect the Device for Obvious External Damage or Contamination
Remove the unit from use and inspect the accessible resuscitation components for:
- Damaged, cracked, pinched, or disconnected gas hoses
- Loose wall-gas connectors
- Bent fittings or damaged outlets
- Contaminated, obstructed, or damaged patient gas outlet
- Cracked pressure gauge lens or visibly abnormal gauge indication
- Signs of impact damage to the resuscitation module
- Unusual hissing, odor, heat, or evidence of a gas leak
Do not attempt internal pneumatic repair or adjustment during this inspection.
Expected outcome: External physical damage, obstruction, or leakage is either identified or ruled out.
If damage, leakage, or contamination is found: Stop troubleshooting, remove the unit from service, and send it for repair or bench evaluation.
4. Verify the Correct Gas Sources Are Connected
Confirm that the gas hoses are connected to the correct wall outlets and are fully seated.
For units equipped with air/oxygen blending or functions requiring both gas sources, verify that both the oxygen and medical air connections are present and secure. A disconnected, crossed, or unavailable gas source can cause abnormal flow, pressure, or oxygen delivery.
Expected outcome: Required gas supply connections are correct, secure, and available.
If reconnecting a loose or incorrect hose resolves the issue: Perform a complete functional check before returning the warmer to service, then stop.
5. Check Available Supply Pressure
Verify the wall gas source using an approved method consistent with departmental policy, such as a verified test device or a known-working outlet comparison.
For the Resuscitaire resuscitation module, the specified wall supply pressure is 40–75 psi (275–517 kPa). Cylinder-equipped configurations allow up to 2,900 psi maximum cylinder pressure.
On units with visible supply gauges, compare the displayed indication with the expected connected gas source.
Expected outcome: The external gas source is available and within the device’s specified supply-pressure range.
If the supply pressure is absent or incorrect: Correct or escalate the medical gas source problem before condemning the infant warmer.
6. Check Cylinder Supply, If Equipped
If the unit is configured with reserve gas cylinders:
- Confirm the cylinder is the correct medical gas type.
- Confirm the cylinder is connected securely.
- Verify adequate remaining pressure on the appropriate gauge.
- Check for obvious regulator, hose, or fitting damage.
- Do not use a cylinder connection that leaks or cannot maintain a stable indication.
Expected outcome: Reserve gas supply is present, correctly connected, and not the cause of the flow or pressure concern.
If replacing an empty or improperly connected cylinder resolves the issue: Complete functional verification before returning the device to service, then stop.
7. Inspect the Patient Circuit and Disposable Accessories
Disconnect the device from patient use and inspect the external breathing circuit, T-piece, mask interface, tubing, and any installed disposable components for:
- Kinks
- Occlusions
- Loose connections
- Incorrect assembly
- Damaged tubing
- Fluid or debris contamination
- Incorrect accessory selection
Substitute a known-good compatible circuit or accessory set when available.
Expected outcome: External circuit or disposable accessory failure is identified or ruled out.
If a replacement circuit restores normal flow and pressure: Complete the required operational check, document the defective accessory, and stop.
8. Verify Flow Output Using Approved Test Equipment
With the device off the patient and connected to proper gas sources, set up the resuscitation output for bench verification using approved testing equipment and facility procedure.
Confirm that gas flow responds consistently to control adjustment. The documented patient gas supply flow control range is 0–15 LPM; the auxiliary flow circuit, when present, is also specified at 0–15 LPM.
Expected outcome: Flow is present, stable, and responds appropriately through the expected range.
If flow is absent, unstable, or cannot be verified despite correct external supply and accessories: Remove the unit from service for repair evaluation.
9. Verify Airway Pressure Performance Using a Test Lung or Appropriate Analyzer
Using an approved test setup, verify that the unit can generate and maintain expected pressure without uncontrolled fluctuation or abnormal leakage.
The Resuscitaire airway pressure limit is adjustable from 0–50 cm H₂O, with an internal preset limit listed as 60 cm H₂O. AutoBreath-equipped units list adjustable PEEP from 0–18 cm H₂O.
Do not attempt internal regulator, valve, pressure-relief, or calibration adjustments as part of this troubleshooting guide.
Expected outcome: Pressure output is stable and consistent with the selected test condition.
If pressure cannot be established or is unstable: The device is not suitable for clinical use and requires repair or bench evaluation.
10. Evaluate for an Internal Pneumatic or Control Failure
If gas supply, wall outlets, cylinder supply, hoses, patient circuits, disposable accessories, and external test setup have all been verified, but the unit still has abnormal gas flow or pressure, the fault is likely internal to the resuscitation module or associated pneumatic controls.
Examples may include an internal valve, regulator, gauge, blender, flow-control, or pressure-control problem.
Expected outcome: External causes have been eliminated, and the unit is appropriately escalated rather than repeatedly tested in clinical service.
If the Problem Persists
Once external gas supply, connections, accessories, and safe bench verification steps have been completed without resolving the issue, the problem is likely internal.
The device should be:
- Removed from service
- Labeled Out of Service
- Sent for repair or bench evaluation
- Evaluated according to approved service procedures before return to patient care
Knowing when to stop is proper troubleshooting. A warmer with unreliable resuscitation gas flow or pressure should not remain available for emergency neonatal use.
Clinical Use Tip
Do not troubleshoot a resuscitation gas-flow or pressure issue while an infant is depending on the affected device. Transfer respiratory support to known-working equipment first, then test the warmer only when it is safe and isolated from patient care.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Labor and Delivery reported that the Drager Resuscitaire produced weak and inconsistent gas flow during setup for neonatal resuscitation."
Cause
What was observed during troubleshooting.
Example:
"Medical air and oxygen wall supplies and patient circuit were verified, but resuscitation outlet flow remained unstable during bench testing with approved test equipment."
Resolution
What action was taken.
Example:
"Removed the Resuscitaire from service, labeled it Out of Service, and routed it for bench evaluation of the resuscitation module pneumatic controls."
Helpful Details to Include (If Known)
- Patient removed from affected device before troubleshooting
- Resuscitation option installed, such as T-piece, blender, or AutoBreath
- Oxygen and medical air connections verified
- Wall supply pressure verified within specification
- Cylinder pressure checked, if equipped
- Hoses and fittings inspected
- Patient circuit or disposable accessories replaced
- Flow verification result
- Pressure verification result
- Gauge behavior
- Presence of hissing or suspected leak
- Final device status
Final Thought
Reliable gas flow and airway pressure are essential for neonatal resuscitation. Begin with patient safety, rule out gas supply and accessory causes logically, and escalate promptly when stable performance cannot be verified. Clear CCR documentation supports safe follow-up and prevents an unsafe device from returning to clinical use.
That is successful troubleshooting.