To evaluate the effects of bilateral dual transversus abdominis plane block on postoperative pain after robotic assited laparoskopic surgery and measure the plasma-level of ropivacain after the bilateral dual transversus abdominis plane block.
After randomisation patients for robotic assisted laparoscopic surgery will receive bilateral dual transversus abdominis plane block containing either ropivacain or isotonic potassium chloride. The investigators will record pain-score, opioid-consumption and sensibility on the abdominal wall in the postoperative periode. Also a blood sample will be taken at 15, 30, 60, 120 and 240 minutes after the block in order to measure the plasma-level of ropivacain after bilateral dual transversus abdominis plane block. The investigators assume that there will be significant effect on postoperative pain and that the level of plasma-ropivacain will be acceptable.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
80
Ropicacain 3,75 mg/ml 15 ml x 4 when placing the Bilateral Dual Transverus Abdominis Plane block
Isotonic potassium chloride 15 ml x 4 when placing the bilateral dual transverus abdominis plane block.
Aalborg Hospital
Aalborg, Region Nord, Denmark
Pain-score on numerical rating scale
Time frame: 4 hours after surgery
Administration of opioids
Time frame: The first 24 hours after surgery.
Pain-score on numerical rating scale
Time frame: 8 hours after surgery
Pain-score on numerical rating scale
Time frame: 24 hours after surgery
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