Anesthesia & Clinical Research
Open Access

Masafumi Kimura

Publications

• Research Article
  Changes in Cerebral Oxygenation Assessed by Near-infrared Spectroscopy during Shoulder Arthroscopy in the Beach Chair Position after Brachial Plexus Block
  Author(s): Chizu Aso, Tomonori Takazawa, Nobuhisa Iriuchijima, Masaki Taguchi, Masafumi Kimura, Makiko Hardy Yamada, Kunie Nakajima, Shiro Koizuka and Shigeru SaitoChizu Aso, Tomonori Takazawa, Nobuhisa Iriuchijima, Masaki Taguchi, Masafumi Kimura, Makiko Hardy Yamada, Kunie Nakajima, Shiro Koizuka and Shigeru Saito
  
  Background: It is well known that patients undergoing shoulder surgery in the Beach Chair Position (BCP) have a potential risk for cerebral ischemia. Using Near-Infrared Spectroscopy (NIRS), this study aimed to test whether cerebral oxygenation in these patients was impaired by brachial plexus block accompanied with general anesthesia. Methods: Ultrasound-guided interscalene brachial plexus block was performed in 26 patients undergoing elective arthroscopic shoulder surgery under general anesthesia. In all subjects, cerebral oxygenation during anesthesia was evaluated by measuring the Tissue Oxygenation Index (TOI) with NIRS. Results: No differences were seen in TOI values between Pre-BCP and Post-BCP periods in both block and non-block sides, despite a decrease in mean blood pressure (P<0.05, repeated measures one-.. View More»
  DOI: 10.4172/2155-6148.1000367

  Abstract PDF

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