Ultrasound-guided Intermediate Cervical Plexus Block

Ultrasound-guided Intermediate Cervical Plexus Block for Carotid Endarterectomies

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