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Quinsy Drainage

A peritonsillar abscess is the most common complication of tonsilitis. As discussed in our sore throat section, the condition occurs due to a collection of pus developing deep to the tonsil. This pus requires drainage; "Ubi pus, ibi evacua".

 

The collection can be drained either by making a small incision into the overlying soft tissue or, more commonly, via a needle aspiration. The later is discussed here. 

 

Equipment

 

  • A good headlight

  • Lack's "metal" tongue depressor

  • 5-10ml syringe

  • Large bore cannula (grey 16G)

  • Kidney bowl 

  • Mouthwash or gargle 

  • Xylocaine spray

 

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Procedure

 

A well informed, comfortable patient and a good light source are key for success.

 

The patient's oropharynx is anaesthetised using xylocaine spray. Whilst this is working, the cannula is processed to allow 'safe' drainage (image opposite);

 

  • The cannula is deconstructed to its individual parts.

  • The protective sheath is then cut and repositioned on the needle leaving around 1.5 - 2cm of the needle exposed and taped into position. (This prevents the needle from passing too deep.)

  • A 10ml syringe is then attached to the needle.

 

The cannula and syringe are then used to aspirate the abscess.

 

The classic aspiration point is described by tracing a line superiorly from the medial surface of the last standing mandibular molar until it meets with a line traced horizontally from the base of the uvula. However, each quinsy is different and aspiration points should follow the area of greatest swelling.

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If successful, patients often describe feeling instant relief.

 

As with all procedures, quinsy drainage should only be attempted by those qualified to do so.  â€‹

Quinsy cannula
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