Suspected Peritonsillar Abscess
Patient with severe unilateral throat pain, trismus, muffled voice, fever
All Pathways
OtolaryngologyEmergency
Peritonsillar Abscess (Quinsy) Management
Peritonsillar Abscess (Quinsy) Management: Suspected Peritonsillar Abscess → Clinical Examination → Airway Compromise? → ⚠️ Airway Emergency → Initial M...
Pathway Overview
15 steps
Algorithm Steps
15 total
01Start 02Action Clinical Examination
Look for classic triad: Trismus (limited mouth opening), Uvular deviation (away from affected side), Muffled 'hot potato' voice. Also: unilateral tonsillar bulge, soft palate erythema/edema.
03Decision Airway Compromise?
Signs of impending airway obstruction: stridor, drooling, inability to swallow, respiratory distress?
04Warning ⚠️ Airway Emergency
Call anesthesia and ENT STAT. Prepare for difficult airway. Avoid sedation. Consider awake fiberoptic intubation or surgical airway.
05Action Initial Medical Management
IV fluids for hydration. Dexamethasone 10mg IV (reduces pain and edema). IV antibiotics: Ceftriaxone 2g IV + Metronidazole 500mg IV OR Ampicillin-sulbactam 3g IV OR Clindamycin 600-900mg IV.
- Dexamethasone 10mg IV single dose
- Pain control: NSAIDs, acetaminophen, opioids PRN
- NPO until drainage completed
06Decision Drainage Method?
Both needle aspiration and incision & drainage have similar success rates. Choice depends on operator experience and patient factors.
07Action Needle Aspiration
18G needle on 10mL syringe. Topical anesthesia + local infiltration. Aspirate at point of maximal fluctuance (usually superior pole). May need multiple passes.
- Position: upright, slight head extension
- Landmark: superior-lateral to tonsil
- Protect needle with guard (leave 1cm exposed)
- Aspirate until pus obtained or dry tap
08Decision Successful Drainage?
Was pus obtained? Did patient have symptomatic relief (reduced pain, improved mouth opening)?
09Action Failed Initial Drainage
Consider: phlegmon (no abscess yet), wrong location, deep space extension. Obtain CT if not already done. ENT consultation.
10Action CT Neck with Contrast
Obtain if: unclear diagnosis, concern for deep space extension, failed initial drainage, or immunocompromised patient.
- Path rejoins step 05Shared downstream outcome
11Decision Disposition
Admit if: unable to tolerate PO, immunocompromised, concern for deep space infection, airway compromise, failed drainage, unreliable follow-up.
12Outcome Discharge with Follow-up
Oral antibiotics x 10 days: Amoxicillin-clavulanate 875/125mg BID or Clindamycin 300-450mg TID. Follow-up in 24-48 hours. Return precautions. ENT referral for tonsillectomy consideration.
13Outcome Admit for IV Antibiotics
Continue IV antibiotics. ENT consultation. Serial examinations. Repeat drainage if needed. Consider OR for tonsillectomy in recurrent cases.
14Action Incision & Drainage
Scalpel incision at point of maximal fluctuance. Blunt dissection with hemostats to break loculations. May be preferred for larger abscesses or failed aspiration.
- Local anesthesia: lidocaine with epinephrine
- Incision: 1-2cm at superior pole
- Blunt dissection to open loculations
- Express pus, irrigate if needed
- Path rejoins step 08Shared downstream outcome
15Decision Phlegmon or Abscess?
Point-of-care ultrasound (POCUS): Sensitivity ~91%, specificity ~75% per 2023 meta-analysis. CT with contrast if POCUS equivocal or deep space concern. Fluctuance suggests abscess. Phlegmon = cellulitis without drainable collection.
- Path rejoins step 10Shared downstream outcome
- Path rejoins step 05Shared downstream outcome
Guideline Source
AAFP Peritonsillar Abscess + 2024 Systematic Review
Clinical Safety Information
Clinical Decision Support — Not a Substitute for Clinical Judgment
Individual patient factors may require deviation from these recommendations.
Known Limitations
- No NICE, SIGN, or AAO-HNS formal CPG for PTA management
- Steroid dosing based on limited RCT evidence
- Drainage procedures require appropriate training
- Deep space extension requires CT imaging
- Tonsillectomy timing controversial
Applicable Regions
USEU
Version 1Next review: 2027-01-11
Next steps
Finish the workflow by opening the most relevant calculator, then convert the session into a live account when you are ready.
Related Resources
Frequently Asked Questions
What is the Peritonsillar Abscess (Quinsy) Management?
The Peritonsillar Abscess (Quinsy) Management is a emergency clinical algorithm for Otolaryngology. It provides a structured decision tree to guide clinical decision-making, based on AAFP Peritonsillar Abscess + 2024 Systematic Review.
What guideline is the Peritonsillar Abscess (Quinsy) Management based on?
This algorithm is based on AAFP Peritonsillar Abscess + 2024 Systematic Review (DOI: Am Fam Physician. 2008;77(2):199-202).
What are the limitations of the Peritonsillar Abscess (Quinsy) Management?
Known limitations include: No NICE, SIGN, or AAO-HNS formal CPG for PTA management; Steroid dosing based on limited RCT evidence; Drainage procedures require appropriate training; Deep space extension requires CT imaging; Tonsillectomy timing controversial. Individual patient factors may require deviation from these recommendations.
Get AI-Powered Analysis Alongside This Algorithm
In AttendMe.ai, the Peritonsillar Abscess (Quinsy) Management appears automatically when your clinical question matches — alongside evidence from 3M+ peer-reviewed articles.
Try AttendMe Free