How Do You Deliver Rescue Breaths to a Child With a Pulse?

When a child has a pulse but is not breathing effectively, you deliver one rescue breath every two to three seconds, aiming for a visible chest rise with each breath and reassessing every two minutes. This technique, sometimes called “rescue breathing” or “ventilation support,” sits in a specific zone of emergency care: the child’s heart is still working, so chest compressions are not needed, but oxygen is not getting in on its own. Getting the details right matters more than you might expect, because children’s airways, lung volumes, and the reasons they stop breathing in the first place differ from adults in ways that change your approach.

When Is Rescue Breathing Without Compressions the Right Call?

Rescue breathing alone applies when a child is unresponsive or barely responsive, is not breathing normally (or is only gasping), but still has a detectable pulse. The classic scenarios include opioid overdose, drowning where the child has been pulled from water quickly, severe asthma or allergic reactions that have progressed to respiratory failure, seizures with prolonged apnea, and choking that has been partially relieved but left the child too exhausted to breathe on their own.

Checking for a pulse in a child is not as straightforward as it sounds. For children over one year old, you feel for the carotid pulse on the side of the neck, just as you would for an adult. For infants under one, you use the brachial artery on the inside of the upper arm, because an infant’s short, chubby neck makes the carotid unreliable. Even trained providers sometimes struggle to find a pulse in a small, hypotensive infant within the recommended ten-second window.¹ If you cannot confidently feel a pulse within ten seconds, the current guidance is to start full CPR with compressions rather than waste time searching. Better to compress a heart that is still beating weakly than to withhold compressions from one that has stopped.

Once you confirm a pulse, the key threshold is whether the heart rate is above 60 beats per minute with signs of adequate blood flow. If the pulse is present but the rate has dropped below 60 and the child looks poorly perfused (pale, limp, mottled skin), guidelines recommend starting compressions even though a pulse is technically present. The 2025 American Heart Association and American Academy of Pediatrics guidelines specifically address the treatment of inadequate breathing with a pulse as a distinct clinical scenario in pediatric basic life support.²

The Step-by-Step Technique for Children Over One Year

For a child roughly one year old through puberty, here is the sequence after you have confirmed a pulse and determined the child is not breathing adequately:

• Open the airway: Place one hand on the child’s forehead and tilt the head back gently while lifting the chin with your other hand’s fingertips. You want a “sniffing position” where the ear canal lines up roughly with the front of the shoulder. Avoid pressing into the soft tissue under the chin, which can close the airway you are trying to open.
• Seal and breathe: Pinch the child’s nose shut, make a complete seal over the mouth with your mouth, and deliver one breath over about one second. Watch for the chest to rise visibly. If the chest does not rise, reposition the head and try again before giving the second breath.
• Pace yourself: Give one breath every two to three seconds, which works out to roughly 20 to 30 breaths per minute. Each breath should be just enough to make the chest rise. Resist the urge to blow hard or fast.
• Reassess every two minutes: Stop briefly to check whether the child has resumed breathing on their own and whether the pulse is still present. If the pulse disappears, switch to full CPR immediately.

The critical detail most people underestimate is how small these breaths need to be. You are not trying to fill a child’s lungs the way you would inflate a balloon. A gentle puff, roughly the volume of air in your cheeks, is closer to the right amount for a smaller child. Over-inflation is one of the most common and most harmful mistakes.

How It Differs for Infants

Infants under one year old present a different set of challenges. Their faces are small, their airways are narrow, and the proportions of their heads relative to their bodies affect how you position them.

Instead of pinching the nose and breathing into the mouth, you cover both the infant’s mouth and nose with your mouth and breathe into both simultaneously. This mouth-to-mouth-and-nose technique exists because an infant’s face is small enough that sealing just the mouth while pinching the nose can be difficult or even impossible depending on the rescuer’s facial dimensions. Research examining the relationship between rescuer and infant facial measurements found that many adults cannot reliably seal an infant’s nose and open mouth separately, and recommended that instruction emphasize sealing over both the mouth and nose together.³

Case reports have documented real-world failures when parents attempted standard mouth-to-mouth on infants and could not achieve an adequate seal. In one case, a mother found she could not cover her baby’s nose and open mouth with her mouth, and had to switch to a mouth-to-nose approach, which actually worked.⁴ The takeaway is practical: if you cannot get a seal over both the mouth and nose of an infant, try sealing over just the nose while gently closing the mouth, or just the mouth while sealing the nose with your cheek. Adaptability matters more than textbook form.

A comparative study found that mouth-to-mouth-and-nose delivered a higher percentage of adequate-volume breaths to infant manikins compared with bag-valve-mask ventilation, which tended to deliver excessive volumes.⁵ That finding is worth knowing: your own breath, delivered gently, may actually be better calibrated to an infant’s small lungs than equipment that is designed for a wider range of patients. Bag-valve-masks remain the standard for trained providers, but if you are a bystander without equipment, your mouth works.

Getting Head Position Right

The angle of the head matters more than most people realize, and more so in younger children. An infant’s relatively large occiput (the back of the skull) naturally flexes the neck forward when the child is lying flat, which can obstruct the airway before you have even started. The classic teaching is to place the infant’s head in a “neutral” or very slightly extended position, sometimes aided by placing a thin folded towel under the shoulders to offset the large head.

An MRI-based study of neonates and young infants quantified this precisely. In spontaneously breathing but neurologically depressed newborns, the head-tilt angle associated with a patent (open) airway averaged about 125 degrees, while the angle associated with a blocked airway was about 108 degrees. The probability of a patent airway climbed above 95 percent at head-tilt angles between 144 and 150 degrees.⁶ You do not need to memorize those numbers. The practical point is that a very slight tilt backward is better than none, but cranking an infant’s head back as far as it goes (as you might for an adult) is neither necessary nor safe. Think of gently sniffing a flower: the head tips back just enough to align the airway.

For older children, you can use more extension. Their proportions are closer to adult anatomy, and the sniffing position with a moderate head tilt and chin lift works well. The key mistake in every age group is letting the head flop to one side or flexing the chin down toward the chest, both of which kink the airway and make your breaths ineffective no matter how good your seal is.

What to Do If You Suspect a Spinal Injury

If a child has fallen from a height, been in a car crash, or suffered any trauma that might involve the neck, tilting the head back is risky because it can worsen a cervical spine injury. The alternative is the jaw thrust maneuver: you place your fingers behind the angles of the jaw on both sides and push the lower jaw forward without moving the head or neck. A cadaver study comparing the two approaches found that the jaw thrust produced significantly less motion at an unstable upper cervical spine injury than the head tilt-chin lift, and recommended using the jaw thrust for trauma patients with suspected cervical spine injuries.⁷

The jaw thrust is harder to perform, especially while also trying to deliver breaths. If you are alone and cannot maintain the airway with a jaw thrust, guidelines still permit a careful head tilt-chin lift, because a child who cannot breathe at all will die faster than any spinal injury will cause damage. The priority hierarchy is always airway first, spine second.

The Hyperventilation Trap

One of the most dangerous and most common errors in pediatric rescue breathing is going too fast. The instinct when a child is not breathing is to blow more air in, more often, as quickly as possible. That instinct is wrong, and even trained professionals fall into it. A study of simulated pediatric emergencies found hyperventilation in every single mock resuscitation reviewed. Providers across all disciplines averaged about 40 breaths per minute, roughly double to five times the recommended rate of 8 to 20 breaths per minute depending on the child’s age.⁸

Hyperventilation causes several problems at once. Breathing too fast increases pressure inside the chest, which reduces the amount of blood returning to the heart and drops cardiac output. It also blows off too much carbon dioxide, which constricts blood vessels in the brain at precisely the time you want maximum blood flow there. And fast, forceful breaths are more likely to push air into the stomach rather than the lungs, a problem serious enough to deserve its own discussion.

The fix is deliberately pacing yourself. Count “one-one-thousand” between breaths. Watch the chest rise and fall completely before giving the next breath. It will feel too slow. That feeling is normal and should be ignored.

Gastric Distention and Why Gentle Breaths Matter

When you blow air into a child’s airway, the air follows the path of least resistance. If the airway is well-aligned and you give a gentle, steady breath, air goes into the lungs. But if you blow too hard, too fast, or the airway is partially obstructed, air gets pushed past the lower esophageal sphincter into the stomach instead. In children, this sphincter is weaker than in adults, which makes the problem worse. Case reports have documented gastric distention during pediatric resuscitation severe enough to physically compress the lungs and prevent effective ventilation entirely. In those cases, the stomach had to be decompressed (typically with a tube) before the child could be ventilated.⁹

A distended stomach also increases the risk of vomiting and aspiration, which can turn a recoverable respiratory emergency into a lung injury. The prevention is straightforward: deliver each breath slowly over a full second, stop as soon as you see the chest begin to rise, and do not give a second breath until the chest has fallen back down. If you notice the child’s belly swelling, do not press on the abdomen to relieve it (that can cause vomiting). Instead, recheck your head position, ensure the airway is open, and reduce the force of your breaths.

Why Breaths Are Especially Critical in Children

There is an important difference between pediatric and adult cardiac arrest that shapes everything about rescue breathing. Most adult cardiac arrests are caused by heart rhythm problems. Most pediatric arrests start as respiratory problems: the child stops breathing first, and the heart follows. This means oxygen deprivation is usually the root cause, and restoring oxygen delivery through rescue breaths addresses it directly.

A large study of pediatric out-of-hospital cardiac arrests found that bystander CPR with rescue breaths was associated with roughly 36 percent higher odds of a good neurological outcome compared with compression-only CPR.¹⁰ That gap was consistent across age groups. For drowning, which is one of the most common causes of pediatric cardiac arrest, the difference was even more stark. A nationwide study of pediatric drowning arrests found that compression-only CPR was associated with about 38 percent higher relative risk of 30-day death compared with CPR that included rescue breathing, along with worse neurological outcomes.¹¹

These findings apply to full cardiac arrest with compressions, but they underscore a broader point that is directly relevant to rescue breathing for a child with a pulse. If rescue breaths improve outcomes even during cardiac arrest, they are arguably even more important when the heart is still beating and all the child needs is oxygen. A child with a pulse and no breathing is in a window of opportunity: their circulation is still working, but it is carrying deoxygenated blood. Each effective rescue breath buys time for the underlying cause to be treated, whether that means an EpiPen for anaphylaxis, naloxone for an opioid exposure, or simply waiting for a seizure to end.

Using a Bag-Valve-Mask If One Is Available

If you have access to a bag-valve-mask (the self-inflating bag with an attached face mask found in first-aid kits, schools, and ambulances), it can be more effective than mouth-to-mouth for sustained rescue breathing, provided you know how to use it. The device is considered one of the most useful tools in pediatric prehospital care because it lets you deliver oxygen-enriched air when connected to a supplemental source and avoids direct contact with the child’s face.¹²

The technique requires choosing the right mask size: it should cover the mouth and nose without pressing on the eyes or hanging off the chin. You hold the mask in a “C-E” grip, with the thumb and index finger forming a C on the mask to maintain the seal, and the remaining three fingers forming an E along the jawline to lift the jaw into the mask. Squeeze the bag with your other hand just until the chest rises, then release.

The most common problem with bag-valve-mask in pediatric rescue breathing is over-squeezing. Adult-sized bags hold more than a liter of air, but a small child needs only a fraction of that per breath. Over-delivery pushes air into the stomach and raises all the gastric distention risks described earlier. Pediatric-sized bags exist and are preferable when available, but if you only have an adult bag, use just your fingertips rather than your full hand to squeeze it, and stop the instant you see the chest rise.

Reassessment and Knowing When to Escalate

Every two minutes, you should briefly pause to check two things: whether the child has started breathing on their own, and whether the pulse is still present. If the child begins breathing adequately, place them in a recovery position on their side (to protect the airway in case of vomiting) and continue monitoring until emergency services arrive. Keep your hand near their chest or face so you can feel if breathing stops again.

If at any reassessment you cannot detect a pulse, or the pulse has dropped below 60 beats per minute with signs of poor perfusion, transition immediately to full CPR with compressions. Do not second-guess yourself or spend extra time searching for the pulse. The shift from rescue breathing alone to full CPR is not a sign of failure; it is the expected progression in many pediatric emergencies. Respiratory arrest tends to deteriorate into cardiac arrest if the underlying cause is not resolved quickly, and being ready to escalate is part of managing the situation effectively.

One practical tip worth knowing: if you are performing rescue breathing alone for several minutes and starting to feel lightheaded yourself, slow your own breathing between rescue breaths. Rescuers sometimes hyperventilate themselves out of anxiety, which can cause dizziness and tingling that impairs your ability to help. Breathe normally for yourself, then deliver one calm breath to the child, then breathe normally again. Staying functional is not selfish; it is necessary.