Transverse abdominis plane block is considered as a method of postoperative pain control in abdominal surgeries. To avoid systemic side effects of analgesics and to reduce the opioid consumption postoperatively we performed TAP block on ceasarean section patients.
In this double blind randomised clinical trial ,164 patients candidates for cesarean section, aged between 20-40 ,with ASA Class I,II were randomly assigned to recieve TAP block,in Shariati Hospital during years 2012-2013. After obtaining written consent patients allocated in 4 groups of 41 randomly.
After last stitch ,bilateral TAP block was performed under ultrasonographic guide.control group patients recieved 18 ml bupivacaine 0.25% along with 2 cc normal saline on each side, Sufentanil group (S) recieved 18ml bupivaciane 0.25% along with 1ml normal saline and 1ml sufentanil(5micgr)on each side. The Naloxone group (N) recieved 18 ml bupivacaine 0.25% along with 100 (ngr) naloxone (1ml)and 1ml normal saline on each side, and Naloxone and sufentanil group (N+S) recieved 18 ml bupivaciane 0.25% along with sufentanil 1ml(5microgr) and 100 ng naloxone on each side.
In the recovery room, pain intensity was measured at baseline then 2h, 6h, 12h, 24h postoperatively using visual analoge scale and the time of first request for analgesic and opioid consumption during 24 h postoperation also wrer recorded .
The primary goal was to evaluate the morphine consumption to relief postoperative pain.