DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Superficial cervical plexus block. Surgeon injecting local anaesthetic into the neck of a patient to block the nerves of the cervical plexus, prior to endarterectomy surgery on the carotid artery. Ultrasound is used to help locate the precise position for the injection.
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