Pain practice : the official journal of World Institute of Pain
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Four cases of ischemic injury have been reported in patients undergoing orthopedic surgery in the upright position. We describe the use of cerebral oximetry as a monitor of the adequacy of cerebral perfusion in a 63-year-old woman who underwent arthroscopic rotator cuff surgery in a beach chair under general anesthesia. ⋯ When spontaneous ventilation resumed, an increase in end-tidal carbon dioxide was accompanied by an increase in S(ct)O(2). Cerebral oximetry may prove useful as a guide monitor and manage nonsupine patients.
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The aim of the present work was to measure the pain threshold in hypertensive patients with a new auto-algometry method. ⋯ The data obtained from this study indicate that the auto-algometer as described here can detect hypoalgesia associated with hypertension.