Ultrasound-guided Intermediate Cervical Plexus Block
Ultrasound-guided Intermediate Cervical Plexus Block
The investigators test with the present study design, whether an ultrasound-guided blockade
 of the cervical plexus in combination with an additional application of local anesthetic to
 the superficial cervical ansa (facial nerve: cervical branch) leads to an improved quality of
 anesthesia.
The innervation of the neck area is complex and includes cranial nerve (innervation of the
 vessel wall (IX,X) and of the neck muscles (VII,XI)), as well as the cervical plexus and
 brachial plexus. This is a major cause of insufficient anesthesia quality during carotid
 endarterectomies.

 The investigators test with the present prospective study design, whether an
 ultrasound-guided blockade of the cervical plexus in combination with an additional
 application of local anesthetic to the superficial cervical ansa (facial nerve: cervical
 branch) leads to an improved quality of anesthesia.
Inclusion Criteria:

 -  internal carotid stenosis: open surgical revascularization

 -  age over 18 years

 -  written informed consent

 Exclusion Criteria:

 -  allergy (local anesthetics)

 -  pregnancy

 -  participation in other studies

 -  drug addiction

 -  non-cooperative patients