الفهرس 
Evaluation of perfusion index by masimo set pulse oximetry to predict the efficiency of ultra sound guided supraclavicular block in patients undergoing upper limb orthopedic surgery
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Abstract
The relationship of the pulsatile to the non-pulsatile amounts of blood at any particular site corresponds to PI at that site seventy patients scheduled for elective upper limb orthopedic surgery with ultrasound guided supraclavicular block and will be measure the average change in perfusion index by masimo SET pulse oximetry (masimo corporation 40 parker Irvine, california). At baseline and 10, 20, 30min from administration of the block in blocked limb and contralateral unblocked limb