Ultrasound-Guided Intermediate Cervical Plexus Block for Transcarotid Transcatheter Aortic Valve Replacement.

OBJECTIVE: To report the authors' initial experience of transcarotid transcatheter aortic valve replacement (TAVR) managed with ultrasound-guided intermediate cervical plexus block. DESIGN: A single-center prospective study. SETTING: A teaching hospital in Paris, France. PARTICIPANTS: All consecutive patients undergoing a transcarotid TAVR were included. INTERVENTIONS: The ultrasound-guided intermediate cervical plexus block was performed in 28 of 31 patients. In 3 patients, the procedure was scheduled under general anesthesia: 2 because of failure of previous transfemoral procedures under local anesthesia, and 1 for an emergency procedure in a pulmonary edema context. MEASUREMENTS AND MAIN RESULTS: Anesthesia and all perioperative parameters were recorded, as well as any complications after the procedure. Twenty-eight patients were managed with intermediate cervical plexus block and light sedation without any anesthesia-related complication. No conversion to general anesthesia was required. The use of vasopressor was only required in 11% of the patients. In 2 patients, a loss of consciousness after the common carotid artery cross-clamping test occurred, leading to the use of a temporary femoral-carotid shunt; no other change in consciousness was recorded during the procedure. CONCLUSIONS: Ultrasound-guided intermediate cervical plexus block appeared to be an alternative anesthetic technique for carotid TAVR, providing adequate surgical conditions, continuous neurologic monitoring, and arterial pressure stability.