Use Of Pleural Tuohy Needles

Use of Pleural Tuohy Needles

Once the pleural space is found, an epidural catheter is advanced 4 to 6 cm past the tip of the needle and fixed in position as the needle is withdrawn. For single injection, 20 to 25 ml of 0.25% bupivacaine can achieve a mean duration of analgesia of 7 hours (range 2–18 hr). Plasma concentration of the local anesthetic peaks at 15 to 20 minutes after injection. Adding epinephrine to the solution slightly delays and reduces the peak plasma concentration. For continuous infusion, a rate of 0.125 ml /kg/hr is usually employed. A subcutaneous tunneled interpleural catheter can be placed in patients when a long-term infusion of analgesic is desired.

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