What are the recommended workup, treatment, and disposition guidelines for a 14-year-old male with suspected peritonsillar abscess (unilateral tonsillar enlargement, uvular deviation toward the affected side, erythema, exudate, and petechiae) presenting to urgent care?

Immediate ENT Referral and Transfer Required

This patient requires immediate ENT consultation and likely hospital admission—this is beyond the scope of urgent care management given the severity of presentation with dehydration, inability to tolerate oral intake, and classic peritonsillar abscess (PTA) findings.

Your Clinical Suspicion is Correct

The presentation is highly consistent with PTA:

• Unilateral tonsillar enlargement (right > left)
• Uvular deviation toward the affected side (stuck to right tonsil)
• Erythema, exudate, and petechiae
• Inability to eat/drink for 1.5 days
• Adolescent age (peak incidence)

1 describes this classic triad: fever, dysphagia, trismus, and "hot potato" voice with uvular deviation being pathognomonic for PTA rather than simple tonsillitis.

Immediate Workup in Urgent Care (Before Transfer)

Clinical Assessment

• Airway evaluation: Assess for stridor, respiratory distress, or impending airway compromise—these are transfer emergencies
• Hydration status: Given 1.5 days of poor intake, assess for dehydration (orthostatics, mucous membranes, capillary refill)
• Trismus severity: Can he open his mouth? This affects ability to manage airway
• "Hot potato" voice quality: Muffled speech indicates significant swelling

Point-of-Care Diagnostics

• Intraoral ultrasound (if available and trained): Can confirm abscess vs cellulitis 2, 3. Using an endocavity transducer with sheath, look for hypoechoic fluid collection. This has excellent diagnostic accuracy and can differentiate PTA from peritonsillar cellulitis when imaging is needed.
• Do NOT attempt needle aspiration in urgent care without ENT backup—risk of vascular injury and inadequate drainage

Laboratory Work

• CBC with differential (assess for leukocytosis, severity of infection)
• BMP (assess hydration status given poor oral intake)
• Consider rapid strep test (though treatment won't change immediate management)

Treatment Protocol in Urgent Care (Stabilization Before Transfer)

Immediate Interventions

1. IV access and hydration: Start normal saline bolus given 1.5 days of poor intake
2. IV antibiotics: Start immediately, don't wait for transfer
   • First-line: Ampicillin-sulbactam 3g IV OR clindamycin 600mg IV (if penicillin allergic)
   • PTA is polymicrobial (Group A Strep + oral anaerobes) 4, 1
3. IV corticosteroids: Dexamethasone 10mg IV or methylprednisolone 125mg IV
   • Reduces pain, speeds recovery, and may reduce airway edema 5
4. Pain control: IV morphine or hydromorphone (oral medications not tolerated)

Critical Pitfall to Avoid

Do NOT send this patient home with oral antibiotics alone. 6 describes outpatient medical management, but that study excluded patients unable to tolerate oral intake. This patient's dehydration and inability to drink for 1.5 days makes outpatient management unsafe.

Disposition and Referral

Immediate Actions

1. Call ENT on-call immediately for same-day consultation
2. Arrange hospital admission for:
   • IV antibiotics and hydration
   • Definitive drainage (incision and drainage or needle aspiration)
   • Airway monitoring
3. Transfer via EMS if ENT consultation requires transfer to another facility

What ENT Will Do

4 shows the treatment hierarchy in children:

• 69% receive incision and drainage (most common, most definitive)
• 7.6% needle aspiration (alternative if anatomy favorable)
• 7% immediate tonsillectomy (quinsy tonsillectomy for high-risk patients) 7
• 16.4% antibiotics alone (only for early cellulitis without abscess formation)

Given this patient's uvular deviation and unilateral tonsillar bulge, there is clearly an abscess requiring drainage—antibiotics alone will fail.

Recurrence Risk

4 reports 2-15.8% recurrence rate within 1-2 months after initial treatment. ENT will discuss interval tonsillectomy (typically 4-6 weeks after acute episode) with family.

Complications to Monitor During Stabilization

Watch for these potentially life-threatening complications 1:

• Airway obstruction: Worsening stridor, respiratory distress
• Extension to deep neck spaces: Worsening neck swelling, torticollis
• Aspiration: From inability to handle secretions
• Sepsis: Worsening vital signs, altered mental status

If any of these develop, this becomes a medical emergency requiring immediate transfer to ED with advanced airway capabilities.

Documentation for Referral

Provide ENT with:

• Duration of symptoms (1.5 days unable to eat/drink)
• Degree of uvular deviation and tonsillar asymmetry
• Presence/absence of trismus
• Hydration status and interventions given
• Antibiotics and steroids administered with times
• Any imaging performed (ultrasound findings if done)

8 specifically excludes complicated pharyngitis like PTA from primary care guidelines, reinforcing that this requires specialist management.