✅ Model Answer:
• Adenoid hypertrophy – soft tissue mass in the nasopharynx.
• Nasopharyngeal airway narrowing – reduced air column.
• Adenoid to nasopharyngeal ratio – >0.7 indicates significant hypertrophy.
• Thickened soft palate – due to tonsillar hypertrophy.
• Normal cervical spine alignment – no prevertebral swelling.
• Diagnosis: Adenotonsillar hypertrophy (enlarged adenoids and tonsils).

✅ Model Answer:
• The adenoid to nasopharyngeal (A/N) ratio is measured on a lateral neck X-ray.
• It is calculated by dividing the maximal thickness of the adenoid soft tissue by the distance from the posterior border of the hard palate to the anterior margin of the atlas (C1).
• Significance:
- Ratio <0.5: Normal (no significant hypertrophy).
- Ratio 0.5-0.7: Mild to moderate hypertrophy.
- Ratio >0.7: Severe hypertrophy – associated with significant airway obstruction and OSA.
- A ratio >0.7 is often used as an indication for adenoidectomy.
• It provides an objective measure of adenoid size to guide management.

✅ Model Answer:
• Nocturnal symptoms:
- Loud snoring (≥5 nights/week).
- Witnessed apnoeas (pauses in breathing).
- Restless sleep, frequent awakenings, enuresis.
- Mouth breathing, drooling.
• Daytime symptoms:
- Chronic mouth breathing, dry mouth.
- Hyponasal speech ("hot potato" voice).
- Daytime sleepiness, hyperactivity (ADHD-like).
- Poor school performance, inattention.
- Morning headaches, irritability.
• Associated: Recurrent otitis media (eustachian tube dysfunction), tonsillitis, failure to thrive.
• Examination:
- Adenoid facies: Long face, open mouth, tired appearance.
- Large tonsils (Brodsky grade 3-4).
- Narrow airway on oral examination.

✅ Model Answer:
• This is obstructive sleep apnea (OSA) due to adenotonsillar hypertrophy.
• Next steps:
1. Referral to ENT: For adenotonsillectomy (T&A) evaluation.
2. Polysomnography (PSG): Not always required if the diagnosis is clear, but indicated for high-risk children (age <3 years, obesity, Down syndrome, craniofacial anomalies, comorbidities).
3. Pre-operative evaluation: CBC, coagulation profile, consider sickle cell screening.
4. Inpatient admission post-T&A: For high-risk patients (age <3 years, AHI >10, underlying conditions).
5. Treat complications: Enuresis, growth failure, hypertension.

✅ Model Answer:
• Adenotonsillectomy (T&A) is the first-line treatment.
• Success rate: 70-80% resolution of OSA.
• Indications:
- Moderate-severe OSA (AHI ≥5) with tonsillar hypertrophy.
- Symptoms: Loud snoring, witnessed apnoeas, daytime sleepiness.
- Complications: FTT, enuresis, pulmonary hypertension, or school difficulties.
• Alternative treatments:
- Intranasal corticosteroids (for mild OSA with allergies).
- CPAP (for severe OSA or if surgery is contraindicated).
- Weight loss (for obesity-related OSA).
- Montelukast (for mild OSA with allergies).
• Post-op: Monitor for bleeding, dehydration, pain; high-risk patients require inpatient admission.

✅ Model Answer:
• PSG is the gold standard for diagnosing OSA.
• Indications for PSG:
1. High-risk patients: Age <3 years, obesity, Down syndrome, craniofacial anomalies, neuromuscular disease, sickle cell disease.
2. Discrepancy between symptoms and examination: When symptoms suggest OSA but tonsils are small.
3. Pre-operative evaluation: For patients with complex medical conditions.
4. Post-operative assessment: To evaluate for residual OSA after T&A.
5. Diagnostic uncertainty: When the diagnosis is unclear.
• PSG measures AHI (apnea-hypopnea index) and oxygen saturation nadir.
• Severity grading: Mild (AHI 1.5-5), Moderate (5-10), Severe (>10).

✅ Model Answer:
• Enlarged adenoids can cause Eustachian tube dysfunction by:
- Direct mechanical obstruction of the Eustachian tube orifice.
- Inflammation spreading from the adenoids to the Eustachian tube.
• This leads to negative middle ear pressure → serous otitis media (otitis media with effusion).
• Management:
1. Adenoidectomy – may resolve the effusion.
2. Tympanostomy tubes (grommets): If effusion persists despite adenoidectomy.
3. Hearing assessment: To rule out conductive hearing loss.
4. Observation: Some cases resolve spontaneously.
5. Avoid: Prolonged use of nasal decongestants (rhinitis medicamentosa).

✅ Model Answer:
• This is post-operative bleeding (hemorrhage) or infection (abscess).
• Diagnosis:
- Bleeding: Fresh or old blood in the mouth, hematemesis, tachycardia.
- Infection: Fever, trismus (inability to open mouth), neck pain, airway obstruction.
• Management:
1. Assess airway: ABCs, check for airway compromise.
2. If bleeding: Apply pressure, IV fluids, blood transfusion if needed, and surgical intervention (cauterization, packing).
3. If infection: IV antibiotics (ampicillin-sulbactam or clindamycin), hydration, and consider surgical drainage.
4. Admit to ICU/PICU: For monitoring.
5. Prevention: Avoid NSAIDs post-operatively (risk of bleeding).

✅ Model Answer:
• Obstructive sleep apnea (OSA): Neurocognitive impairment, learning difficulties, ADHD-like symptoms.
• Pulmonary hypertension: Right ventricular hypertrophy, cor pulmonale.
• Growth failure: Due to increased energy expenditure and poor feeding.
• Cardiovascular: Systemic hypertension, left ventricular hypertrophy.
• Enuresis: Nocturnal enuresis (due to sleep fragmentation).
• Recurrent otitis media: Chronic effusion, hearing loss, speech delay.
• Dental: Malocclusion, open bite (adenoid facies).
• Quality of life: Decreased school performance, social difficulties.

✅ Model Answer:
• Post-operative risks:
1. Bleeding: Primary (<24 hours) or secondary (5-10 days).
2. Dehydration: Due to pain, poor oral intake.
3. Pain: Severe throat pain (may require opioids).
4. Airway obstruction: Edema, uvular swelling.
5. Infection: Fever, trismus.
6. Velopharyngeal insufficiency (VPI): Nasal regurgitation, hypernasal speech.
• Management:
- Pain control: Paracetamol, NSAIDs (avoid in high-risk patients).
- Hydration: IV fluids if oral intake is poor.
- Monitoring: For bleeding, respiratory distress.
- Inpatient admission: For high-risk patients (age <3 years, severe OSA, underlying conditions).
- Voice evaluation: If VPI is suspected.

✅ Model Answer:
• A normal X-ray does NOT exclude adenotonsillar hypertrophy or OSA.
• Next steps:
1. Polysomnography (PSG): The gold standard for diagnosing OSA – may show obstruction even if X-ray is normal.
2. Nasal endoscopy: Direct visualization of adenoids and airway.
3. Consider other causes: Allergic rhinitis, nasal polyps, craniofacial anomalies, neuromuscular disease.
4. Treat underlying conditions: Intranasal corticosteroids, antihistamines, CPAP.
5. Re-evaluate: Repeat X-ray or consider CT if anatomy is complex.