When a Cleft Is an Airway Emergency
What makes a a breathing emergency in one baby and not another?
💡 A becomes an airway emergency through the small-jaw / tongue-back mechanism of , not from the hole itself.
Prerequisite check
- To suck, a baby seals the lips and drops the jaw and tongue to make a closed, sealed space; the is the ceiling of that space.
- An open connects mouth to nose, so the baby cannot build (the vacuum) and a lip breaks the lip seal, so milk is not pulled in efficiently and some refluxes out the nose.
What you will learn
Goal: Students will identify the triad and explain why turns a into an airway emergency, then place Mateo on that risk spectrum.
- is a small lower jaw; is the tongue falling backward; together they can cause .
- (PRS) is plus plus with a wide .
- A sequence is a chain reaction from one starting problem (the small jaw), not a primary syndrome; the high tongue can even wedge the palatal shelves open.
- Airway treatments follow the cause chain from gentlest up: prone or side positioning, then a nasopharyngeal airway, then CPAP, then surgical options.
Model: Two newborns, side by side
Two infants with a are compared on the features the neonatology team checks first (Baby R is an instructional foil, not Mateo and not a specific patient; the triad and mechanism are grounded in the cited sources). Lip: Mateo has a cleft upper lip on the left, while Baby R's lip is intact. Jaw: Mateo's is normal, while Baby R's is very small with the chin set far back. Tongue: forward and normal for Mateo, falling backward toward the throat for Baby R. Cleft palate shape: narrow (with the lip cleft) for Mateo, wide and U-shaped for Baby R. Breathing on the back: quiet and comfortable for Mateo, but noisy, labored, and with color dropping for Baby R, who pinks up only when turned face-down (prone).
The mechanism: when a baby's lower jaw is very small, there is no room out front for the tongue, so it sits high and back. A backward-displaced tongue can block the throat, and during formation that same high tongue can physically wedge between the palatal shelves so they never meet, leaving a wide U-shaped gap. This is the Pierre Robin cascade: one trigger (small jaw) causes the next (tongue back), which causes the airway block and even shapes the .
Explore (work the model before reading on)
- List the three features of Baby R that Mateo does not share.
- What single action improves Baby R's breathing, and what does that tell you about where the blockage is?
- Link the small jaw to the tongue position to the breathing problem. Put the three in cause-and-effect order.
- Baby R's is wide and U-shaped while Mateo's is narrow. Using the mechanism note, explain how a misplaced tongue could shape the cleft itself.
- Predict what would happen to Baby R if she were always placed flat on her back and no one intervened. Then predict the simplest first treatment that follows from your cause-and-effect chain.
- In one sentence, what pattern did your team find that separates a dangerous from Mateo's safe one?
Guided notes
The three pieces
- A small lower jaw is called ; with no room in front, the tongue falls backward, which is .
- A backward tongue can cause , blocking the flow of air.
Sequence, not syndrome
- These three plus a wide define (PRS); a sequence is a chain reaction.
- One starting problem (the ______ jaw) mechanically causes the next (the ______ tongue), which causes the airway block and wedges the open.
Placing Mateo
- Mateo's jaw is ______ (normal), his tongue is forward, his is narrow, and his breathing is quiet, so he does NOT have PRS and his airway is safe.
- PRS is often part of a larger syndrome, so Mateo's lack of is one more vote pointing away from a syndrome.
Reading the Research
- Skim the title and abstract first to get the gist.
- Circle the one sentence that states the main claim.
- Box the evidence the authors give for that claim.
- Mark one sentence that confuses you, and move on.
Vocabulary (the same words your classes use)
Vetted readings for this lesson
Track your progress today
Check these off as you work through the lesson, then submit. This tells Mr. Mendoza how you're doing so he can help the class. It does not replace turning in your producible.
Use the code Mr. Mendoza gave you, not your name. Saved on this device.
- Read the Model and answered the Explore questions.
- Filled in the guided notes in my own words.
- Defined the new vocabulary with an example.
- Built the producible: Do a 30-second airway triage: for each of four babies (Mateo; Baby R; a cleft palate with normal jaw, forward tongue, quiet breathing; a tiny jaw with noisy breathing and color dropping on the back), mark SAFE or EMERGENCY, name the one feature that decided it, and write the first treatment for the emergency cases.
- Wrote my Claim, Evidence, and Reasoning exit ticket.
Exit ticket (Claim, Evidence, Reasoning)
- Claim: Mateo's is or is not an airway emergency. Pick one: ________.
- Evidence: The exam features that decided it were ________.
- Reasoning: A becomes a breathing emergency when ________, which is why is dangerous.
| Criterion | Proficient | Developing | Beginning |
|---|---|---|---|
| Complete | Every required part of the artifact is present and filled in. | Most parts are present, but one is missing or left blank. | Several parts are missing. |
| Accurate | The science and data are correct and match the evidence. | Mostly correct, with a small factual slip. | Key science or data is wrong. |
| Scientific reasoning (CER) | States a claim, backs it with specific evidence, and explains the reasoning. | Has a claim and evidence, but the reasoning is thin or missing. | Gives an answer with no evidence or reasoning. |
| Professional communication | Clear, organized, and labeled the way a clinician or scientist would write it. | Readable but disorganized or missing labels. | Hard to follow. |
| Submitted | Turned in the right way (Schoology for routine work) and confirmed. | Turned in, but in the wrong place or unconfirmed. | Not turned in. |
- CompleteProficient: Nothing is left blank: the model fills every part of "Do a 30-second airway triage: for each of four babies (Mateo; Baby R; a cleft palate with normal jaw, forward tongue, quiet breathing; a tiny jaw with noisy breathing and color dropping on the back), mark SAFE or EMERGENCY, name the one feature that decided it, and write the first treatment for the emergency cases.".
- AccurateProficient: Every number and claim matches the case evidence.
- Scientific reasoning (CER)Proficient: It names a claim, cites the specific evidence, and explains the reasoning, not just the answer.
- Professional communicationProficient: It is organized and labeled like a real chart note.
- SubmittedProficient: It would be turned in on Schoology and confirmed.
Where this leads: careers
What's next: Mateo's airway is safe, his is isolated, and feeding is handled. Step back: how common is a cleft like his, and in whom does it happen most?