Open AccessNear‐infrared spectroscopic monitoring of patients undergoing carotid endarterectomy under locoregional anaesthesia
Author(s) -
Williams D. J.,
Laws P.,
Imray C.,
Lambert A. W.,
Horrocks M.
Publication year - 1999
Publication title -
british journal of surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.202
H-Index - 201
eISSN - 1365-2168
pISSN - 0007-1323
DOI - 10.1046/j.1365-2168.1999.0692b.x
Subject(s) - medicine , carotid endarterectomy , anesthesia , premedication , oxygenation , local anesthesia , surgery , carotid arteries
Background: The level of cerebral desaturation, which is associated with a change in level of consciousness during carotid endarterectomy, was measured by near‐infrared spectroscopy. Methods: Patients were recruited in two centres over 24 months. Surgery was performed under deep and superficial cervical block using 0·5 per cent bupivacaine, with temazepam as a premedication. Cerebral oxygenation was measured by Critikon 2020 near‐infrared spectrophotometers (Johnson and Johnson Medical, Newport, UK). Results: Forty‐nine procedures were performed on 45 patients (39 men; age range 52–84 (mean 68) years). Recordings were made from the ipsilateral frontal site in 38 patients, from the ipsilateral temporal site in 23 and bifrontally in eight patients. Monitoring failed in three subjects. Percentage changes in regional cerebral oxygen saturation are detailed below. Conclusion: Significantly different levels of cerebral desaturation occur in patients with neurological compromise during carotid endarterectomy compared with those who are unaffected. © 1999 British Journal of Surgery Society Ltd