Comparative study between intrathecal ropivacaine alone and ropivacaine with neostigmine in discectomy

Evaluation of the effect of intrathecal fentanyl with bupivacaine during spinal block

Preemptive epidural neostigmine morphine versus epidural morphine in lumbar spine surgery : Comparative study

Ropivacaine versus bupivacaine in paediatric epidural anesthesia using a new technique

A comparison between “Levobupivacaine” and both “Bupivacaine” and “Ropivacaine” with and without fentanyl, in epidural anesthesia for lower abdominal surgery

Pre-emptive analgesia with morphine: Comparative study between intramuscular, subarachnoid and epidural routes

Levobupivacaine in comparison with bupivacaine in epidural block in abdominal surgery

Intrathecal fentanyl or bupivacaine combined with epidural bupivacaine for labor analgesia : Comparative study

Prospective randomized study of the effect of a continuous preperitoneal infusion of fentanyl and bupivacaine after midline laparotomy on postoperative outcomes

A comparative study of the effects of ropivacaine alone and in adjuvant combination with fentanyl, tramadol, ketamine and clonidine for continuous epidural labor analgesia