Monitorage de la saturation cérébrale en oxygène par spectrométrie proche infrarouge au cours de la chirurgie de l'épaule en position assise

Shoulder surgery in beach chair position is associated with cerebral ischemia. Arterial blood pressure measurement at the arm overestimates the cerebral perfusion pressure value that could be below the cerebral blood flow autoregulation threshold. Cerebral tissue oxygen saturation monitoring by near infrared spectrometry allows preventing and diagnosing oxygen desaturation related to hypotension during surgery.