A 32-year-old man from rural Maharashtra presents with a 3-day history of severe bilateral sore throat, fever (39.2°C), and dysphagia. On examination, he has bilateral tonsillar enlargement with white exudate, petechiae on the soft palate, and cervical lymphadenopathy. Rapid strep test is positive. He is started on oral amoxicillin. However, on day 5, he develops worsening unilateral throat pain despite appropriate antibiotic therapy, difficulty swallowing his own saliva, and a muffled voice. Intraoral examination shows bulging of the left soft palate with medial displacement of the left tonsil. Which of the following is the most appropriate next step in management?

Explanation

## Management of Peritonsillar Abscess: Drainage ### Clinical Context This patient has developed a peritonsillar abscess (PTA) despite appropriate antibiotic therapy. The diagnosis is confirmed by: - Unilateral soft palate bulging - Medial displacement of tonsil - Muffled voice ("hot potato voice") - Worsening symptoms despite antibiotics - Progression from acute tonsillitis ### Management Algorithm ```mermaid flowchart TD A["Peritonsillar Abscess Diagnosed"]:::outcome --> B{"Airway patent?"}:::decision B -->|"Yes"| C["Needle aspiration or I&D"]:::action B -->|"No/Threatened"| D["Secure airway first"]:::urgent D --> E["Tracheostomy or intubation"]:::action C --> F["Send pus for culture"]:::action F --> G["Escalate antibiotics"]:::action G --> H["Elective tonsillectomy 4-6 weeks later"]:::action H --> I["Prevent recurrence"]:::outcome ``` **Key Point:** Drainage (needle aspiration or incision and drainage) is the definitive treatment for peritonsillar abscess. Antibiotics alone are insufficient once abscess has formed. ### Why Drainage is Essential 1. **Antibiotics cannot penetrate abscess wall** — loculated pus has poor antibiotic penetration 2. **Symptom relief** — immediate decompression of pressure 3. **Culture and sensitivity** — guides targeted antibiotic therapy 4. **Prevention of complications** — reduces risk of airway obstruction, Lemierre's syndrome, or mediastinitis ### Drainage Techniques | Technique | Indications | Advantages | Disadvantages | |-----------|-------------|-----------|----------------| | **Needle aspiration** | Cooperative patient, clear diagnosis | Minimal trauma, office procedure | May need repeat if inadequate drainage | | **Incision & drainage (I&D)** | Large abscess, immunocompromised, failed aspiration | Complete drainage, therapeutic and diagnostic | Requires local anesthesia, slight bleeding risk | | **Ultrasound-guided aspiration** | Unclear diagnosis, loculation | Precise localization | Requires ultrasound availability | **High-Yield:** In India, needle aspiration under topical anesthesia is the most commonly performed first-line drainage procedure in ENT outpatient settings. ### Antibiotic Escalation Post-Drainage - **Initial therapy:** Amoxicillin (as given) - **Post-drainage escalation:** Amoxicillin-clavulanate or clindamycin (covers anaerobes and beta-lactamase producers) - **Culture-directed therapy:** Adjust based on pus culture and sensitivity - **Duration:** 10–14 days total **Clinical Pearl:** Always send aspirated pus for Gram stain, culture, and sensitivity — polymicrobial infection (including anaerobes) is common in PTA. ### Follow-up: Elective Tonsillectomy - Performed 4–6 weeks after acute phase resolves - Reduces recurrence risk (up to 30% without tonsillectomy) - Timing allows inflammation to subside and reduces operative bleeding risk **Warning:** Do NOT perform emergency tonsillectomy during acute abscess phase — high risk of hemorrhage and spread of infection. [cite:Harrison 21e Ch 309; Robbins & Cotran 10e Ch 16]