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This Concept Map, created with IHMC CmapTools, has information related to: A&C, Cornual Blocks (scroll over for info) How to perform.. Steps: (scroll over for more info) - A 2.3 cm, 18 gauge needle into the upper third of the temporal ridge, immediately behind the ridge and about 2.5cm below the base of the horn to a depth of 0.7-1.0cm. The nerve may be palpable, between the frontalis and temporal muscles, about halfway from the lateral canthus of the eye to a point about 3cm below the lateral base of the horn. - Pull back on the plunger to check the needle is not placed intravascularly. - Inject 10ml of 2% Lidocaine (1% was used instead) - Onset of analgesia occurs 10-15 minutes and duration is approximately one hour. - Failure may occur if the anaesthesia is injected too deeply, into the temporalmuscle aponeurosis., Auricolopalpebral and Cornual Blocks ???? Post Operative Considerations 1. Ensure the blinking reflex has returned after approximately 1 hours. 2. The area around the horn can be stuck with a needle to check for loss of sensitivity before. proceeding to the next step. 3. If dehorning is carried out the possibility of pain, haemorrhage, flystrike, infection/sinusitis, tetanus and Bovine papilloma should be considered., Auricuolopalpebral Block (scroll over for info) How to perform... Steps: (scroll over for more info) - The auriculopalpebral nerve runs from the base of the ear along the facial crest, past and ventral of the eye, giving off its branches on the way. - The needle is inserted infront of the base of the ear at the end of the zygomatic arch and in instroduced until its point lies at the dorsal border of the arch. - 10ml of 2% Lidocaine (1% was used) inserted at injection site. - Onset of analgesia occurs 10-15 minutes and duration is approximately one hour, Auricolopalpebral and Cornual Blocks Painless Dehorning Cornual Blocks (scroll over for info), Auricolopalpebral and Cornual Blocks Stop Blinking!!!!! Auricuolopalpebral Block (scroll over for info)