Residency · Residency · Otolaryngology
Tonsillectomy and Adenoidectomy: Indications and Complications
Overview
Tonsillectomy with or without adenoidectomy is one of the most commonly performed surgical procedures in children. Indications have shifted from primarily infectious to predominantly sleep-disordered breathing (SDB). Evidence-based guidelines (Paradise criteria) and updated AAO-HNS clinical practice guidelines inform patient selection. Post-tonsillectomy hemorrhage remains the most feared complication, and its management is a core competency for the otolaryngology resident.
Indications for Tonsillectomy
Sleep-Disordered Breathing / Obstructive Sleep Apnea
Now the most common indication (>80% of pediatric tonsillectomies). Adenotonsillar hypertrophy is the primary cause of pediatric OSA. Symptoms: snoring, witnessed apneas, mouth breathing, restless sleep, enuresis, daytime somnolence, behavioral problems. Polysomnography (PSG): gold standard for diagnosis; AHI >= 1 event/hour is abnormal in children. Tonsillectomy resolves OSA in 75-85% of otherwise healthy children (lower in obese children).
Recurrent Tonsillitis (Paradise Criteria)
7 episodes in 1 year, OR. 5 episodes per year for 2 consecutive years, OR. 3 episodes per year for 3 consecutive years. Each episode must be documented and meet criteria: sore throat plus at least one of: fever >38.3C, cervical adenopathy, tonsillar exudate, positive group A streptococcus test. Children who meet Paradise criteria have statistically significant improvement after tonsillectomy, but many would have improved with watchful waiting.
Other Indications
Peritonsillar abscess (with concurrent tonsillitis history or recurrent abscess). Asymmetric tonsillar enlargement (rule out lymphoma; excisional biopsy). PFAPA syndrome (periodic fever, aphthous stomatitis, pharyngitis, adenitis) -- tonsillectomy is curative in 80-90%. Tonsillar obstruction causing dysphagia or failure to thrive.
Surgical Techniques
| Feature | Total (Extracapsular) Tonsillectomy | Intracapsular Tonsillotomy |
|---|---|---|
| Technique | Complete removal in capsular plane | Subtotal removal; capsule preserved |
| Indication | Recurrent tonsillitis, abscess | SDB/tonsillar hypertrophy |
| Pain | More severe | Less pain |
| Recovery | 7-14 days | Faster (5-7 days) |
| Hemorrhage risk | Standard (2-4%) | Lower |
| Regrowth risk | None | 1-5% |
| Methods | Cold steel, electrocautery, coblation | Microdebrider, coblation, CO2 laser |
Total (Extracapsular) Tonsillectomy
Complete removal of the tonsil within the capsular plane, Exposes the pharyngeal constrictors. Methods: cold steel dissection, electrocautery (monopolar or bipolar), coblation, harmonic scalpel, microdebrider. Gold standard for recurrent tonsillitis.
Intracapsular Tonsillectomy (Tonsillotomy/Partial Tonsillectomy)
Subtotal removal; preserves the tonsillar capsule as a biologic dressing. Less pain, faster recovery, lower hemorrhage risk. Primarily indicated for SDB/tonsillar hypertrophy (not recurrent tonsillitis). Methods: microdebrider, coblation, CO2 laser. Tonsillar regrowth rate: 1-5%; may require revision.
Coblation vs. Electrocautery
Coblation: radiofrequency-based; lower tissue temperature; less thermal injury. Meta-analyses show reduced pain and faster return to diet with coblation. Hemorrhage rates: slightly lower or equivalent with coblation. Controversy: some studies show higher secondary hemorrhage with coblation (hot technique debate).
Adenoidectomy
Indications
Nasal obstruction from adenoid hypertrophy, Chronic adenoiditis contributing to rhinosinusitis, Adjunct to tympanostomy tubes (age >= 4, repeat tubes). Component of treatment for pediatric OSA (with tonsillectomy). Chronic mouth breathing, hyponasal speech.
Technique
Mirror-assisted curettage (traditional). Powered adenoidectomy (microdebrider under endoscopic visualization). Suction cautery or coblation under endoscopic or mirror guidance. Avoid injury to the torus tubarius and Eustachian tube orifice. Avoid velopharyngeal insufficiency (VPI): cautious in patients with submucous cleft palate, short palate, or 22q11.2 deletion.
Contraindications to Adenoidectomy
Submucous cleft palate (risk of VPI), Known 22q11.2 deletion (velocardiofacial syndrome), Cleft palate (relative; need speech assessment), Atlantoaxial instability (Down syndrome -- relative).
Perioperative Considerations
Preoperative
PSG for suspected OSA (especially in children <2 years, obesity, craniofacial anomalies, neuromuscular disorders). Coagulation studies: NOT routinely recommended; obtain if history suggests bleeding disorder. NPO guidelines per institutional anesthesia protocol.
High-Risk Patients for Post-Tonsillectomy Monitoring
Age <3 years, Severe OSA (AHI >10, SpO2 nadir <80%), Obesity, Craniofacial anomalies, Down syndrome, Neuromuscular disorders, Cardiac comorbidities, Consider overnight observation or ICU monitoring.
Pain Management
Acetaminophen and ibuprofen (alternating): first-line. Codeine is contraindicated in children post-tonsillectomy (FDA black box warning; CYP2D6 ultra-rapid metabolizers at risk of fatal respiratory depression). Avoid aspirin and NSAIDs other than ibuprofen (ibuprofen is now considered safe; AAO-HNS 2019 update). Dexamethasone: single intraoperative dose (0.5 mg/kg, max 10 mg) reduces nausea and inflammation. Adequate hydration is the most important factor in recovery.
Post-Tonsillectomy Hemorrhage
Classification
Primary hemorrhage: within 24 hours of surgery (intraoperative or immediate postoperative). Secondary hemorrhage: >24 hours; typically days 5-10 (peak incidence); related to eschar separation. Overall hemorrhage rate: 2-4% (primary ~0.5-2%; secondary ~2-4%).
Risk Factors
Older age (adolescents and adults > children). History of recurrent tonsillitis (inflamed, scarred tonsils). Hot dissection techniques (higher thermal injury), Inadequate intraoperative hemostasis, Coagulopathy, NSAID use other than ibuprofen (controversial).
Management
Minor oozing at home: cold water gargle, rest, observe; present to ED if bleeding persists. Active bleeding in ED: ABCs, IV access, type and crossmatch. Assess hemodynamic stability (tachycardia, hypotension). Direct visualization with headlight and tongue depressor; identify bleeding site. Silver nitrate cautery or pressure for minor bleeding. Oropharyngeal packing (temporizing). Return to OR for significant hemorrhage: General anesthesia; rapid sequence intubation (full stomach risk). Cauterization of bleeding vessel. Suture ligation if cautery insufficient. Carotid artery injury: extremely rare but life-threatening; suspect if pulsatile bleeding or massive hemorrhage; pack and obtain angiography.
Carotid Artery Considerations
Internal carotid artery (ICA) lies 2-2.5 cm posterolateral to the tonsillar fossa. Aberrant or tortuous ICA: may be closer; seen in 1-2% of the population. Pulsating posterior pharyngeal wall on exam should raise suspicion. Catastrophic hemorrhage: pack, call vascular surgery, angiography.
<image>Grading of tonsillar hypertrophy (Brodsky scale). Four panels showing the oropharynx with increasing tonsil size. Grade 1+: tonsils occupy less than 25% of the oropharyngeal width. Grade 2+: tonsils occupy 25-50% of the oropharyngeal width. Grade 3+: tonsils occupy 50-75% of the oropharyngeal width. Grade 4+: tonsils occupy more than 75% of the oropharyngeal width, nearly touching or "kissing" at the midline. Each panel shows the relationship of the tonsils to the anterior pillars, uvula, and posterior pharyngeal wall.</image>
<image>Post-tonsillectomy hemorrhage management algorithm. Flowchart starting with post-tonsillectomy bleeding, branching into primary (<24 hours) and secondary (>24 hours, days 5-10). Assessment pathway: ABCs, IV access, labs (CBC, type and screen), hemodynamic assessment. Minor bleeding: observation, cold gargle, silver nitrate. Moderate-significant bleeding: OR for examination under anesthesia, cauterization, suture ligation. Massive/pulsatile hemorrhage: pack, emergent vascular surgery consultation, angiography. Decision nodes include hemodynamic stability, ability to visualize and control the bleeding source, and response to initial measures.</image>
<image>Comparison of total (extracapsular) tonsillectomy versus intracapsular tonsillotomy. Side-by-side cross-sectional diagrams of the tonsillar fossa. Left panel: Total tonsillectomy showing complete removal of the tonsil with exposed pharyngeal constrictor muscle; the capsule plane is dissected. Right panel: Intracapsular tonsillotomy showing partial removal of tonsillar tissue with preserved capsule acting as a biologic dressing over the pharyngeal muscle. Below each diagram, a comparison table lists indications (infectious vs. SDB), pain scores, hemorrhage rates, recovery time, and risk of regrowth.</image>
Clinical Pearls
Sleep-disordered breathing has surpassed recurrent tonsillitis as the most common indication for tonsillectomy; tonsillar hypertrophy assessment (Brodsky scale) and polysomnography guide surgical decision-making. Codeine is absolutely contraindicated after tonsillectomy in children (FDA black box warning); acetaminophen and ibuprofen (now deemed safe by AAO-HNS) are first-line analgesics. Post-tonsillectomy hemorrhage peaks at days 5-10 and is the most common reason for return to the OR; the resident must be prepared for rapid sequence intubation in a child with a full stomach and active oropharyngeal bleeding. Intracapsular tonsillectomy offers less pain and faster recovery for SDB indications but is not appropriate for recurrent tonsillitis; tonsillar regrowth occurs in 1-5%. Always evaluate for submucous cleft palate (bifid uvula, zona pellucida, palpable notch in the hard palate) before adenoidectomy; undiagnosed submucous cleft palate leads to velopharyngeal insufficiency after adenoidectomy. PFAPA syndrome is an often-overlooked indication for tonsillectomy; the periodic febrile episodes resolve in 80-90% of children after surgery.
References
- Mitchell RB, Archer SM, Ishman SL, et al. "Clinical practice guideline: tonsillectomy in children (update)." Otolaryngol Head Neck Surg. 2019;160(1 Suppl):S1-S42.
- Paradise JL, Bluestone CD, Colborn DK, et al. "Tonsillectomy and adenotonsillectomy for recurrent throat infection in moderately affected children." Pediatrics. 2002;110(1 Pt 1):7-15.
- Friedman NR, Perkins JN, McNair B, Mitchell RB. "Current practice patterns for sleep-disordered breathing in children." Laryngoscope. 2013;123(4):1055-1058.
- Odhagen E, Sunnergren O, Hemlin C, et al. "Risk of re-tonsillectomy after partial vs total tonsillectomy for pediatric obstructive sleep-disordered breathing." Int J Pediatr Otorhinolaryngol. 2016;90:86-90.
