Continuous Regional Analgesia After Total Knee Arthroplasty

Continuous Regional Analgesia After Total Knee Arthroplasty. Normal Saline or Dextrose 5% in Water as Fluid Medium for Pre-Placement Expansion in Order to Facilitate the Catheter Passing

This prospective, comparative and double blind study is aimed to determine if normal saline or dextrose 5% in water will modify the stimulation during the insertion of the stimulating catheter used for continuous femoral and sciatic blocks in total knee replacement.

The operator is blinded to the medium fluid to expand the perineural femoral and sciatic nerves before threading in the stimulating catheter. He records all the electric data of electrolocation of nerve, which will be compared to determine whether or not a difference in intensity is found between normal saline or dextrose 5% in water.

Inclusion Criteria:

• American Society of Anesthesiologists (ASA) I and II
• Male or non-pregnant female
• 18 - 80 years of age
• Not allergic to iodine or local anesthetics
• Absence of abnormality of coagulation
• Scheduled for total knee replacement