Peritonsillar Abscess

images Clinical suspicion


   images Swollen/red peritonsillar region causing uvular shift


   images Fluctuance of area


images Interim treatment for peritonsillar closed space infection until tonsillectomy


CONTRAINDICATIONS



images Extension into the deep neck tissue


images Septicemia/toxic appearance


images Airway obstruction


images Severe trismus


images Coagulopathy



images General Basic Steps


   images Patient preparation


   images Analgesia


   images Visualization


   images Needle aspiration/incision and drainage (I&D)


LANDMARKS



images Superior lateral border of affected tonsil, or area of most fluctuance


images Aspirate peritonsillar abscess’ (PTA’s) superior pole first, then middle pole, and finally the inferior pole (FIGURE 76.1)


TECHNIQUE



images Patient Preparation


   images Cooperative patient sitting upright in a chair with occipital support


   images Consider intravenous analgesia or sedation


   images Digital exam key: Must feel abscess!


   images Use ultrasound (endocavitary probe) to assess volume, location, and relationship to the carotid artery (FIGURE 76.2)


images Needle Aspiration


   images Anesthetize with benzocaine spray or have patient gargle viscous lidocaine


   images Have patient depress own tongue by holding laryngoscope, insert as you would for intubation. Patient will be less likely to trigger own gag reflex while pulling down on blade (FIGURE 76.3)


   images Anesthetize locally with 1 to 2 mL of 1% lidocaine via 27-gauge needle


   images Use a long spinal needle so visualization is not obscured by syringe


   images Cut the distal 1 cm off of the needle cover and recap the needle, thereby preventing the needle from penetrating >1 cm (FIGURE 76.4)


   images Insert spinal needle at area of greatest fluctuance (usually the superior pole) and aspirate the pus



images


FIGURE 76.1 A: Peritonsillar abscess. The tonsil is displaced forward and inferomedial, the uvula is deviated toward the unaffected tonsil, and the soft palate is edematous and ruborous. B: Recommended sites for three-point needle aspiration of a peritonsillar abscess. (From Saladino RA. Pharyngeal procedures. In: Henretig FM, King C, eds. Textbook of Pediatric Emergency Procedures. Philadelphia, PA: Williams & Wilkins; 1997:692, 696, with permission.)

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Aug 9, 2016 | Posted by in EMERGENCY MEDICINE | Comments Off on Peritonsillar Abscess

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