Validation of the accuracy of needle placement as used in diagnostic local analgesia of the maxillary nerve for investigation of trigeminally mediated headshaking in horses

Diagnostic local anaesthesia of the maxillary nerve is a valuable aid in the diagnosis of trigeminally mediated headshaking in horses. Our objective is to validate the accuracy of needle placement in this procedure and to identify any correlation between accuracy of the technique and operator experi...

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Veröffentlicht in:Veterinary record 2015-02, Vol.176 (6), p.148-148
Hauptverfasser: Wilmink, S., Warren-Smith, C. M. R., Roberts, V. L. H.
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creator Wilmink, S.
Warren-Smith, C. M. R.
Roberts, V. L. H.
description Diagnostic local anaesthesia of the maxillary nerve is a valuable aid in the diagnosis of trigeminally mediated headshaking in horses. Our objective is to validate the accuracy of needle placement in this procedure and to identify any correlation between accuracy of the technique and operator experience. Using a small volume of contrast medium, the procedure was performed bilaterally on 30 horse cadaver heads by three groups with different levels of experience with the technique. The location of deposition was then identified using computed tomography (CT). Contrast medium was deposited around the target site in 53.3% (32/60) of injections. An experienced operator succeeded in deposition around the target area significantly (p
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A negative response to diagnostic local anaesthesia of the maxillary nerve does not disprove facial dysaesthesia as the cause of headshaking in that horse as a false negative response could arise due to failure to deposit local anaesthetic around the target area. 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subjects Accuracy
Analgesics
Anesthesia, Local - methods
Anesthesia, Local - veterinary
Animals
Cadaver
equine
Head - innervation
Head - physiopathology
Head Movements - physiology
headshaking
horse
Horse Diseases - diagnosis
Horse Diseases - physiopathology
Horses
Local anesthesia
Maxillary Nerve
Needles - veterinary
posterior ethmoidal nerve
Reproducibility of Results
Trigeminal Nerve - physiology
trigeminal neuropathy
title Validation of the accuracy of needle placement as used in diagnostic local analgesia of the maxillary nerve for investigation of trigeminally mediated headshaking in horses
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