What Are the Indications for a Laryngeal Mask in NRP?

In the Neonatal Resuscitation Program (NRP), a laryngeal mask is indicated primarily in two scenarios: when face mask ventilation fails to achieve effective positive pressure ventilation, and when endotracheal intubation is unsuccessful or not feasible. These indications apply to newborns with an estimated gestational age of at least 34 weeks or a birth weight of at least 2,000 grams. While a laryngeal mask has traditionally been seen as a rescue device, growing evidence and updated guidelines position it as a more routine option in the delivery room, particularly when providers lack advanced intubation skills.

The Two Core NRP Indications

NRP guidelines give the laryngeal mask two distinct roles in the resuscitation algorithm. First, it serves as an alternative when face mask ventilation is ineffective. If a provider applies a face mask and delivers positive pressure ventilation (PPV) but cannot achieve adequate chest rise or heart rate improvement after corrective steps, the laryngeal mask steps in as a primary airway device. Second, it functions as a backup when endotracheal intubation fails or is unavailable. In that role, the laryngeal mask is classified as a secondary or alternative airway device.¹

A survey of NRP providers and instructors in the United States found that opinions on when to introduce the device are split almost evenly between these two scenarios. Roughly half of respondents said the earliest appropriate point for laryngeal mask use is when face mask PPV is ineffective, while the other half placed it at the point when intubation has been attempted and failed. Only a small fraction considered it appropriate as the very first device for PPV, and even fewer said it should never be used at all.²

Who Is Eligible by Size and Gestational Age

The eligibility window for a laryngeal mask in NRP is defined by two thresholds: gestational age of 34 weeks or more, and birth weight of 2,000 grams (about 4.4 pounds) or more. Meeting either criterion is generally sufficient. The size 1 device, which is the standard neonatal size, fits newborns in a practical range of roughly 1,500 to 5,000 grams. Below 1,500 grams or before 34 weeks of gestation, there is very little good evidence to guide use, and the device may not seal properly in a very small airway.¹

The largest randomized trial of laryngeal masks in neonatal resuscitation enrolled only neonates meeting this 34-week or 2,000-gram threshold.³ A critical review of all available randomized trials echoed this limitation, noting a clear lack of data for babies born before 34 weeks or weighing under 1,500 grams at birth.⁴ That said, real-world transport data suggest the device is occasionally used outside these bounds: in one large retrospective series of neonatal transfers, about a quarter of infants who received laryngeal mask ventilation were under 34 weeks or below 2,000 grams, though these were exceptional circumstances rather than routine practice.⁵

When Anatomy Makes Intubation Difficult or Impossible

Beyond the standard NRP algorithm triggers, a laryngeal mask has a special role for newborns with congenital airway anomalies that make endotracheal intubation extremely difficult. Conditions like Pierre Robin sequence, where the jaw is underdeveloped and the tongue falls backward, can create life-threatening airway obstruction and turn intubation into a high-risk, sometimes impossible procedure. A laryngeal mask can be placed without needing a direct view of the vocal cords, which makes it a practical rescue tool for these babies.⁶

In a retrospective review of neonatal transports over nearly two decades, a small number of neonates with severe congenital upper airway malformations could not be intubated at all and were managed with a laryngeal mask both before and during transport.⁵ For providers who encounter an infant with a known or suspected airway anomaly, having a laryngeal mask immediately available can be the difference between establishing a functional airway and not.

How the Laryngeal Mask Compares to a Face Mask and an Endotracheal Tube

When used as the primary device for delivering PPV, a laryngeal mask significantly outperforms a standard face mask in terms of ventilation success. A systematic review and meta-analysis found that the failure rate for the laryngeal mask was roughly a quarter of the failure rate seen with a face mask, and the need for escalation to intubation dropped substantially as well.⁷ That finding is worth pausing on. A face mask depends on a good seal against the baby’s face and correct head positioning, both of which are harder to maintain than they sound, especially for less experienced providers. The laryngeal mask sits in the throat and creates its own seal, which removes much of that variability.

Compared to an endotracheal tube, the picture is more nuanced. In one study, inserting a laryngeal mask took about half the time of placing an endotracheal tube (roughly 32 seconds versus 66 seconds on average), with fewer attempts needed.⁸ Other research has not always shown such a dramatic speed difference. A separate randomized trial found that insertion times were nearly identical between the two devices, both averaging around 7 to 8 seconds, with similarly high first-attempt success rates above 90 percent.⁹ The difference likely comes down to provider experience and clinical context. In settings where intubation expertise is limited, the laryngeal mask’s speed advantage becomes more pronounced.

Ease of Training and Skill Acquisition

One of the strongest practical arguments for a laryngeal mask in NRP is that it requires less training to place correctly than an endotracheal tube. Intubation demands laryngoscopy skills, direct visualization of the vocal cords, and fine motor coordination that degrades quickly without regular practice. Many community hospitals, birthing centers, and low-resource settings simply do not have a provider with current intubation skills available for every delivery.

Studies of brief training sessions have consistently shown high success rates for laryngeal mask insertion on the first attempt, ranging from about 88 to 98 percent across various device types.¹⁰ In a low-resource setting in Uganda, midwives who received a short training program were able to use a cuffless laryngeal mask effectively during neonatal resuscitation, and the device reduced time to spontaneous breathing compared to face mask ventilation.¹¹ An educational evaluation in a developing-country setting found that midwives and physicians described the laryngeal mask as a sustainable, cost-effective method requiring minimal expertise.¹²

This matters because in NRP, the most critical window is the first minute of life. If effective ventilation is not established quickly, the cascade of oxygen deprivation worsens rapidly. A device that more providers can use confidently, without the performance anxiety of intubation, has real clinical value even if it is not technically “better” than an endotracheal tube in expert hands.

What a Laryngeal Mask Cannot Do in NRP

Understanding the indications also means understanding the boundaries. The NRP algorithm includes steps beyond positive pressure ventilation, and the laryngeal mask has limitations at those steps.

Chest compressions: When a newborn’s heart rate drops below 60 beats per minute despite effective ventilation, NRP calls for coordinated chest compressions and ventilation. Traditionally, an endotracheal tube has been the recommended airway for this step because it provides a more secure seal under the mechanical forces of compressions. However, animal research has begun to challenge this assumption. A lamb study comparing laryngeal mask ventilation with chest compressions to endotracheal tube ventilation found no significant difference in the rate or timing of return of spontaneous circulation between the two groups.¹³ This is promising, but it remains animal data, and current NRP guidelines still favor an endotracheal tube when compressions are needed.
Medication delivery: NRP calls for intratracheal epinephrine as one route for administering emergency medication. The laryngeal mask does not provide a direct route into the trachea, so standard medication protocols that call for intratracheal delivery cannot be reliably carried out through it.
Suctioning below the cords: If meconium or other material needs to be removed from the trachea, an endotracheal tube allows direct suctioning. The laryngeal mask sits above the vocal cords and cannot perform this function.

These limitations mean a laryngeal mask is not a universal replacement for the endotracheal tube in every NRP scenario. It fills a specific and increasingly recognized gap: effective ventilation when a face mask is failing and intubation is not achievable or available.

Safety and Complications

The safety profile of laryngeal masks in neonatal resuscitation has been reassuring so far, though the total body of evidence is still modest. Across the randomized controlled trials evaluated in systematic reviews, no significant complications from laryngeal mask use were reported.⁴ A large retrospective series of neonatal transports spanning nearly two decades found no device-related adverse effects such as significant bleeding or esophageal injury among the infants managed with a laryngeal mask.⁵

That said, the evidence on long-term outcomes is thin. Most studies report immediate resuscitation endpoints like heart rate recovery, time to spontaneous breathing, and short-term survival. Few have tracked neurodevelopmental or respiratory outcomes months or years later. This is a recognized gap in the literature, and it means the safety conversation is “no red flags so far” rather than “comprehensively proven safe.”

Cuffed Versus Cuffless Devices

Not all laryngeal masks are identical, and the choice of device matters for neonatal use. Classic laryngeal mask airways have an inflatable cuff that creates a seal around the laryngeal inlet. Newer cuffless designs, like the i-gel, use a pre-shaped gel-like material to form the seal without inflation. This distinction has practical implications in the delivery room.

The cuffless i-gel eliminates the step of inflating the cuff, which saves a few seconds and removes one potential point of error. A comparative study in infants found the i-gel provided a higher oropharyngeal seal pressure than the classic cuffed device, meaning it formed a tighter seal, and was less likely to become displaced when the infant was repositioned.¹⁴ The randomized trial in Uganda also used a cuffless i-gel and found it effective after minimal training.¹¹ For settings where simplicity and speed are paramount, a cuffless device has appeal. In well-resourced NICUs with experienced staff, either type works.

Beyond Resuscitation: Surfactant Delivery

An emerging use of the laryngeal mask that goes beyond the traditional NRP resuscitation algorithm is the delivery of surfactant, the substance that keeps the lungs’ air sacs from collapsing. Premature infants often lack sufficient surfactant, and historically, giving it required intubation. A technique called SALSA (surfactant administration through laryngeal or supraglottic airways) allows surfactant to be delivered through a laryngeal mask without the need for laryngoscopy, making it accessible to providers who cannot intubate.¹⁵

Early case reports and subsequent randomized trials have shown that surfactant given through a laryngeal mask improves respiratory status and can reduce the need for mechanical ventilation, performing comparably to the traditional intubation-based approach.¹⁶ Larger comparative studies are still needed, but the technique is already gaining traction in various settings around the world. This application is particularly relevant to low- and middle-income countries where intubation-skilled providers are scarce but surfactant-deficient babies are common.

Use During Neonatal Transport

The delivery room is the most discussed setting for laryngeal mask use in NRP, but the device has a role during neonatal transport as well. Moving a critically ill newborn between facilities introduces vibration, limited space, and the risk of accidental extubation. A retrospective review of more than 3,200 neonatal transfers over 18 years found that about 2 percent received positive pressure ventilation via a laryngeal mask. The proportion grew over time, reflecting increasing familiarity with the device. Most of these infants received laryngeal mask ventilation only before transport, but a small number required it during the ambulance ride itself, including one case where it was deployed after an accidental extubation.⁵

For transport teams that may include paramedics or nurses without regular intubation practice, the laryngeal mask provides a backup airway that can be placed quickly in a cramped ambulance or helicopter. The absence of device-related adverse events in this transport series adds confidence to its use in that setting.

Why Global Health Settings Push the Envelope

Much of the momentum behind expanding laryngeal mask use in neonatal resuscitation comes from low- and middle-income countries, where birth asphyxia remains a leading cause of neonatal death. In these settings, the gap between what the NRP algorithm calls for and what is actually available at the bedside is wide. Midwives attend the majority of deliveries, intubation equipment may be absent, and the nearest physician could be hours away.

The face mask, while simple, fails more often than it succeeds in some hands and conditions. The systematic review focused on low- and middle-income countries confirmed that the laryngeal mask dramatically cut the ventilation failure rate compared to face masks.⁷ That difference did not translate into reduced rates of death, brain injury, or hospital admission in the available studies, but the trials were likely not large enough to detect those outcomes. What they did show is that more babies got effective ventilation faster, which is the most time-sensitive link in the resuscitation chain.

The cost of disposable cuffless devices like the i-gel has also helped. A single-use device that requires no inflation, no laryngoscope, and minimal training aligns well with the realities of under-resourced birth facilities. Provider approval in these settings has been high, with health workers describing the device as practical and sustainable after brief instruction.¹²

Where the Evidence Still Falls Short

For all the positive signals, honest gaps remain. The most significant is the lack of data on very preterm or very low birth weight infants. Nearly all randomized trials have excluded babies under 34 weeks or below 2,000 grams, so recommendations for those populations are extrapolations at best.⁴ Smaller supraglottic devices designed for extremely premature infants are in early development, but none has been validated in resuscitation trials.

Long-term outcome data are also sparse. Knowing that a baby achieved return of spontaneous circulation in the delivery room is important, but parents and clinicians also want to know about brain development, lung health, and school-age outcomes. Those studies take years to complete, and the neonatal laryngeal mask literature has not yet matured to that point. Additionally, the question of whether a laryngeal mask should be the first-line device for all eligible newborns, not just a rescue option, is still being debated. The review of available randomized trials concluded that the evidence is not yet sufficient to recommend replacing the face mask with a laryngeal mask as the default starting point, even though the laryngeal mask performs well when deployed.⁴

1
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2
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3
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13
PubMed Central. Laryngeal mask ventilation with chest compression during neonatal resuscitation: randomized, non-inferiority trial in lambs
14
PubMed. A comparative study of Laryngeal Mask Airway size 1 vs. i-gel size 1 in infants undergoing daycare procedures
15
PubMed Central. Surfactant Administration Through Laryngeal or Supraglottic Airways (SALSA): A Viable Method for Low-Income and Middle-Income Countries
16
PubMed Central. Alternative Methods of Surfactant Administration in Preterm Infants with Respiratory Distress Syndrome: State of the Art