Clue 1: Orient yourself
Which leak is visible when nothing moves?
Use the labels and the picture's left-to-right, near-to-far, or before-and-after order. Name only what you can point to.
The question
Which leak is visible when nothing moves?
Why it matters: Structure affects feeding, breathing, hearing, speech, teeth, and surgical planning. Care teams need to connect the exact structure to the function a child is using every day. Today you practice the professional reasoning behind that work: A fistula is a tissue opening, while velopharyngeal insufficiency is a moving-valve problem; each needs different evidence and treatment planning.
On your WebXam
Distinguishing fistula from VPI and weighing speech benefit against airway risk
For life
To find the cause, change one thing and watch what changes.
Principle: Same look, different cause
Five principles we return to
Having it is not using it
Same instructions, different switches
Same look, different cause
Change one thing and watch
Boss or doorman?
Decides the result or only allows it
Held down, not gone
Remove the brake and it returns
Many roads, one ending
One result can begin many ways
Try the everyday version first
A room can leak through a hole or through a door that does not close
A room can lose air through a missing piece or through a movable door that fails to seal. The same leak can come from different structural problems.
Do not jump to the biology yet. Treat the picture as a small system. Track its parts, follow one change at a time, and keep more than one explanation open until the picture supplies a way to separate them.
Clue 2: Trace one change
Which leak appears only during door action?
Follow one object, stage, or path. Point to the first place where the situation changes instead of jumping to the ending.
Clue 3: Keep the cause open
Why would patching the wrong site fail?
List more than one explanation that still fits. Name the extra observation that would help you separate those possibilities.
Now inspect the illustration
Work from the visible evidence. A useful answer names the part of the picture that supports it and leaves unknown causes open.
- 1Which leak is visible when nothing moves?
- 2Which leak appears only during door action?
- 3Why would patching the wrong site fail?
Tier 1 check
Finish with the everyday model
Use the everyday picture to answer today's question in plain words: Which leak is visible when nothing moves?
You can complete today's required check without opening the technical details below.
Ready for the real names? Optional tier 2
Technical rules and limits
Rule 1: Distinguish a static opening from dynamic closure failure.
Rule 2: Measure symptoms and function before revision.
Rule 3: Balance speech improvement against added scar and airway risk.
Where the analogy stops: Speech and swallowing involve coordinated living tissues, not a soundproof room.
Carry the previous idea forward
A unilateral cleft can distort nasal cartilage, base, and septum, so nose care addresses breathing and symmetry across growth.
Today's technical takeaway
A fistula is a tissue opening, while velopharyngeal insufficiency is a moving-valve problem; each needs different evidence and treatment planning.
Now map the same rules onto biology
Differentiate fistula from VPI in two postoperative files
Wall hole
Palatal fistula
Leaky door
Velopharyngeal insufficiency
Sound and airflow test
Speech assessment and imaging or endoscopy
Educational illustration, not a clinical photograph, scan, or surgical plan. Use the labeled evidence cards and claim ceiling.
Mateo's case file: evidence supplied in this lesson
ANA18-E1
Case A has a visible opening in the repaired hard palate and liquid escape through the nose.
Why it matters: This supports a symptomatic fistula.
ANA18-E2
Case B has no palatal hole but consistent hypernasality and a gap during speech endoscopy.
Why it matters: This supports velopharyngeal insufficiency.
ANA18-E3
Secondary surgery can add scar and affect airway; speech surgery does not erase learned compensatory articulation.
Why it matters: Revision must be individualized and may still require speech therapy.
Make the clinical decision
You are triaging two postoperative referrals.
One student wants to give the same patch procedure to both case files.
ASeparate fistula closure planning from VPI evaluation and airway-aware speech planning.
BUse the same repair because both involve nasal escape.
CTreat structural VPI with blowing exercises alone.
Choose the correct triage and cite one differentiating finding per case.
Evidence required
ANA18-E1 + ANA18-E2 Claim ceiling
You may distinguish the supplied mechanisms and next evaluations. You may not select a real revision procedure.Go deeper Optional tier 3
Everything required for today is above. Open these only if you want the explainer, source trail, or download files.
The everyday model and Tier 1 check are the complete required path for this lesson.
Use these checks to keep your place. They are not turned in through the portal.
Check off as you finish
- Worked through the everyday picture and answered its three questions.
- Completed the Tier 1 check in plain words.
Turn in: Anatomical lesson 18: When a Repair Falls Short: Fistula and VPI Revision
Go to Schoology to turn this in.
Submit one PDF. Put your first and last name in the document header. Name the file: FirstName LastName - Assignment Title - YYYY-MM-DD.pdf.
Open Schoology PDF upload helpIf you cannot get in, see Mr. Mendoza. Do not skip the work.
Optional legacy technical materials Open only if you want the original notes, vocabulary, artifact, and CER work
Before this page, you should know
- On the side the nostril is flattened and widened, the ala is pulled down and out, and the is short and leans toward the non-cleft side.
- Inside, the was deviated in about 92 percent of CL/P patients on CBCT, versus about 80 percent of non- controls.
If not, review
Today's new idea is only
A repair can leave a hole (fistula) or a leaky valve (VPI), and choosing a VPI revision means trading speech benefit against airway risk.
Goal: Explain (and how its rate rises with ) and , and compare versus as revisions.
Know by the end
- A is a residual or recurrent hole between the mouth and nose after repair; the pooled mean rate is about 9.94 percent and rises with .
- Fistula rate climbs from about 2 percent in Veau I to about 12.5 percent in Veau IV, with about 8.3 percent.
- is the failure of the repaired soft to seal against the throat during speech, producing and .
- Two revisions are common: a blocks the central leak but risks , and a narrows the opening; neither is clearly .
1
Fistula
Model start: A is a hole between mouth and nose that remains or reopens after repair; its pooled rate is about 9.94 percent and rises with .
- Fistula rate rose from about 2 percent in Veau I to about ____ percent (12.5) in Veau IV.
- Rates are much higher in lower-resource settings, which is an ____ point, not a biology point.
2
VPI
- is the failure of the soft to ____ (seal) against the throat during speech, causing .
3
Two revisions
- A pharyngeal ____ bridges to throat and blocks the central leak, but risks / sleep apnea.
- A builds a narrowing ____ from the tonsil pillars; neither revision is clearly , so the choice depends on the gap.
Everything you need for today is on this page. These links are optional.
What to read
Read the short plain-language explanation written for this lesson. Plain-language explainer for this lesson
Why this source matters
This explanation gives you the background for today's idea without making you decode a research paper: A repair can leave a hole (fistula) or a leaky valve (VPI), and choosing a VPI revision means trading speech benefit against airway risk.
Words to unlock first
palatal fistulavelopharyngeal insufficiency (VPI)pharyngeal flapsphincter pharyngoplastyhypernasal speech
Reading moves
- 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.
Stop point
Stop after the final 'Use it now' section. The research citations are available separately for advanced readers.
Your output
Write one claim-evidence sentence: state the main idea, then name the example or evidence that supports it.
Where this fits
Tested on (Ohio WebXam)
Genetics of Disease · 072130
PLTW lesson
MI · Anatomical domain · Respiratory and speech function; the velopharyngeal valve
WebXam domain
Molecular and Genetic Technology
Evidence to produce
Role-play the team meeting for a patient with confirmed VPI and a small central gap who already has a narrow airway at night. In three or four sentences, recommend a pharyngeal flap or a sphincter pharyngoplasty, and justify it by weighing speech benefit against airway risk using the numbers from the models.
Lab / skill
Human Body Systems (HBS)
Everything required for today's decision is already in the case file and plain-language explainer. The links below are original papers and database records for teachers and advanced readers, not assigned student reading.
- American Cleft Palate Craniofacial Association. 2024 Parameters of Care.
- Tache & Mommaerts 2019, Frequency of Oronasal Fistulation After Primary Cleft Palate Repair (Cleft Palate Craniofac J)
- Hofman et al. 2024, Long-Term Speech Outcomes After Sommerlad Palatoplasty (Clin Oral Investig)
- de Blacam et al. 2022, The Case for the Pharyngeal Flap in Velopharyngeal Dysfunction (J Plast Reconstr Aesthet Surg)
- Claim: A repair can fall short in two distinct ways.
- Evidence: Name the two complications and give one number for each (a fistula rate and a VPI consequence).
- Reasoning: Explain why higher raises both risks, and why choosing a VPI revision means trading speech benefit against airway risk.
How this is graded (rubric)
For: Role-play the team meeting for a patient with confirmed VPI and a small central gap who already has a narrow airway at night. In three or four sentences, recommend a pharyngeal flap or a sphincter pharyngoplasty, and justify it by weighing speech benefit against airway risk using the numbers from the models.
| 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 through the route named under Submit here and confirmed. | Turned in, but in the wrong place or unconfirmed. | Not turned in. |
How the model answer scores against this rubric
- CompleteProficient: Nothing is left blank: the model fills every part of "Role-play the team meeting for a patient with confirmed VPI and a small central gap who already has a narrow airway at night. In three or four sentences, recommend a pharyngeal flap or a sphincter pharyngoplasty, and justify it by weighing speech benefit against airway risk using the numbers from the models.".
- 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 attached to your class form or handed in, and confirmed.
What's next: We answered what goes wrong after repair and how it is fixed. But Mateo has now seen the surgeon, the orthodontist, the , the ENT, and more, across many years. Who does what, and when, across his whole childhood, so nothing is missed and nothing is repeated? We chase that next time.