Anesthesia & Clinical Research
Open Access

Yan Ma

Publications

• Research Article
  The Impact of Hypotensive Epidural Anesthesia on Distal and Proximal Tissue Perfusion in Patients Undergoing Total Hip Arthroplasty
  Author(s): Thomas Danninger, Ottokar Stundner, Yan Ma, James J Bae and Stavros G MemtsoudisThomas Danninger, Ottokar Stundner, Yan Ma, James J Bae and Stavros G Memtsoudis
  
  Little data exists to detail the effect of hypotensive epidural anesthesia on differential tissue oxygenation changes above and below the level of neuraxial blockade. This study was designed to study tissue oxygenation in a clinical setting, using non-invasive near-infrared spectroscopy. Methods: Patients aged 18 to 85 scheduled to undergo primary total hip arthroplasty were enrolled. Muscle oxygenation saturation was measured above and below the level of neuraxial blockade (deltoid and vastus lateralis muscles). Other continuously recorded parameters included cardiac output, stroke volume, heart rate, invasive mean arterial blood pressure and arterial oxygen saturation. Recordings of muscle oxygenation were compared over time separately for upper and lower extremity. Results: 10 patients were enrolled. We found an intermittent and sig.. View More»
  DOI: 10.4172/2155-6148.1000366

  Abstract PDF

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