Ultrasound-guided Intermediate Cervical Block Versus Superficial Cervical Block for Carotid Endarterectomy (CERVECHO)

Ultrasound-guided Intermediate Cervical Block Versus Superficial Cervical Block for Carotid : a Randomised Controlled Trial

The aim of this prospective, randomised, controlled study is to compare the efficacy of ultrasound-guided intermediate cervical block to superficial block for carotid endarterectomy.

Patients scheduled for carotide endarterectomy under regional anaesthesia (ropivacaine 4.75 mg/ml) are randomised into 2 groups according to the technique of anaesthesia performed: superficial cervical block (Control group) or, ultrasound guided intermediate cervical block (Echo group). Main outcome is cervical block success, defined by surgery performed under regional anaesthesia without supplemental topical lidocaine. Secondary outcomes are rate of conversion to general anaesthesia, total dose of supplemental topical lidocaine and block-related complications.

Inclusion Criteria:

• patient scheduled for elective carotid artery endarterectomy under regional anaesthesia

Exclusion Criteria:

• indication for general anaesthesia
• known bleedind diathesis
• past medical allergy to local anaesthesic
• severe chronic pulmonary disease
• contralateral diaphragmatic motion abnormalities
• previous cervical ipsilateral surgery
• age < 18 years