Federal regulators have flagged a recall of breathing circuits used on some of the most fragile patients in any hospital: newborns and infants on ventilators. Medline is pulling all lots of certain Hudson RCI neonatal and infant heated wire breathing circuits after reports that an electrical connector can discolor, melt, smoke, or give off a burning odor.
The Center for Devices and Radiological Health issued an early alert on the breathing circuits, a designation the FDA uses to notify the public about a potentially high-risk device issue while its review is still underway. Medline is telling hospitals to immediately identify and quarantine affected circuits and to destroy them once the recall response form is complete.
There is a complication buried in the notice that deserves more attention than the melting itself. Some affected circuits carry item numbers that do not match the numbers Medline listed in its original recall notice. A hospital that checked its shelves against that first list could have concluded it had no affected stock when it did.
As of the end of July, Medline had not reported any serious injuries or deaths connected to the issue.
Connectors That Discolored, Melted and Smoked
The failure occurs at the heated-wire connector, sometimes called the pigtail, where the circuit connects to the Neptune humidifier. Medline described the failures as sporadic, with affected connectors showing discoloration, melting, smoke, burning odor or other signs of localized thermal damage.
The humidifier has a safety feature that limits what happens next. It continually monitors the heated wire circuit and automatically cuts power to the heated wires when it detects electrical abnormalities. Respiratory gas keeps flowing to the infant. Only the heating function stops.
That distinction matters for understanding the actual risk. A baby on one of these circuits does not suddenly lose breathing support. What the baby loses is warm, humidified air.
Eighteen device entries appear in the FDA's summary table, spanning single-limb and dual-limb neonatal circuits and Iso-Shield infant circuits. A full list of affected products is posted alongside the alert.
Item Numbers That Do Not Match the First Recall Notice
Medline sent affected customers letters on three separate dates in July and August, and the follow-up letters exist largely because of a labeling problem.
Products manufactured before January 2024 carry a Teleflex label and Teleflex item number, written in a format like 780-07 or 880-14KIT. Products manufactured in January 2024 or later carry Medline branding and a Medline item number, formatted like HUD78007 or HUD88014KIT. The same physical circuit can therefore appear on a shelf under two entirely different numbering systems depending on when it was made.
The FDA notice states the point plainly, warning that some circuits display item numbers different from those provided in the original recall notice. Medline has posted example labels showing both formats so materials staff can match what is actually printed on the package.
The recall also asks distributors to pass the notice along. Anyone who resold or transferred the product is instructed to notify those customers, request destruction of affected stock, and report those quantities on the response form. That chain is where recalls typically leak, which is why a device recall can take months to fully clear inventory.
Cold, Dry Gas Is the Real Danger to a Newborn
Heated wire circuits exist because delivering cold, dry gas to a small airway can cause harm. The FDA notice spells out the mechanism in unusual detail.
Inadequately heated or unconditioned gas can dry out and damage the lining of the airway, which the agency notes can predispose an infant to bronchospasm, thickened secretions and airway obstruction. Losing the heated wire function also increases condensation inside the tubing, a phenomenon clinicians call rainout. That pooled water can create unintended positive end-expiratory pressure, block the circuit, or wash back into the infant's airway.
There is a temperature problem on top of the moisture problem. Cold, dry gas increases the risk of cold stress, which increases oxygen consumption and can worsen respiratory distress in a baby who already has very little reserve.
The agency's instruction to clinical teams is direct: "Increased vigilance is recommended for monitoring your ventilator, circuit, and humidification systems."
Parents of NICU Infants and the Questions Worth Asking
This is a hospital supply chain problem, and there is nothing a family can check at home. No consumer owns these circuits. That is worth stating clearly because device recalls often generate anxiety without providing readers with anything actionable.
What a parent of a hospitalized newborn can reasonably do is ask. Families with an infant currently on ventilator support can ask the care team whether the unit uses Hudson RCI heated wire circuits, whether affected lots have been quarantined, and what the humidification monitoring plan looks like. Those are fair questions, and neonatal intensive care teams routinely field recall questions.
Parents whose infants were on ventilator support in recent months and who have concerns about how their child did should raise them with the treating clinician rather than trying to reconstruct events from lot numbers. No injuries or deaths have been linked to this issue so far, and the humidifier's automatic shutoff is designed to prevent the connector problem from escalating into a burn or fire.
Health care workers and consumers can report device problems to the FDA through MedWatch, the agency's adverse event reporting program. Medline is directing customers with questions to its recall line at 866-359-1704 or to [email protected], and the company maintains a product recalls page that the FDA links as a public service.
The FDA says it is still reviewing information about this issue and will update its alert page as significant new information becomes available. The agency's explanation of what an early alert is sets out where this sits in the process. Whether the recall expands to additional models, whether any injury reports surface, and how quickly hospitals clear affected inventory, given the dual-numbering problem, are all open questions. Biomedical engineering and materials management staff, not families, will resolve them.
Key Questions Answered
What is being recalled?
All lots of certain Hudson RCI neonatal and infant heated wire breathing circuits distributed by Medline. These circuits carry respiratory gas between a ventilator and a newborn, and contain heated wires that work with a humidifier to warm the air and limit condensation in the tubing.
What is going wrong with them?
Medline received reports of sporadic failures at the electrical connector where the circuit meets the Neptune humidifier. Affected connectors showed discoloration, melting, smoke, burning odor or other signs of localized heat damage.
Does the baby stop receiving air?
No. The humidifier detects electrical abnormalities and automatically cuts power to the heated wires, but respiratory gas flow to the infant continues. Only the heating function stops.
What harm could result?
Cold, dry gas can dry out and damage the airway lining, raising the risk of bronchospasm, thickened secretions and obstruction. Loss of heating also increases condensation in the tubing, which can cause unintended airway pressure, blockage, or fluid washing into the airway. Cold stress can worsen respiratory distress.
Have any infants been hurt?
As of the end of July, Medline had not reported any serious injuries or deaths associated with the issue. The FDA says it is still reviewing information and will update its alert page.
Why does the item number issue matter?
Circuits made before January 2024 carry Teleflex labels and item numbers, while those made in January 2024 or later carry Medline labels and numbers. A facility checking stock against the original recall notice could miss affected product listed under the other numbering format.
Is there anything families need to do at home?
No. These are hospital devices and no consumer possesses them. Families with an infant currently on ventilator support can ask the care team about the unit's circuits and humidification monitoring, and should raise any concerns about a child's course directly with the treating clinician.
