BACKGROUND Magnesium is a physiologic cation that blocks neuromuscular transmission and does not allow the nerve to be stimulated. OBJECTIVES This study investigates the effect of adding magnesium sulfate to lidocaine to extend the duration of sensory and motor blocks of the axillary plexus in orthopedic surgeries of the upper extremities. PATIENTS AND METHODS This controlled randomized dou...

BACKGROUND Regional anesthesia techniques are increasingly preferred for caesarean section. The aim of the present study was to compare the anesthetic effects of levobupivacaine + fentanyl and bupivacaine + fentanyl on the mother and newborn during elective caesarean section under spinal anesthesia. METHODS In this prospective study, 50 gravidas, who were scheduled for cesarean section were e...

UNLABELLED In 1973, Winnie et al. introduced the inguinal paravascular three-in-one block, which allegedly provides anesthesia of three nerves--the femoral, lateral cutaneous femoral, and obturator nerves--with a single injection. This concept was undisputed until the success of the obturator nerve block was reassessed by using evidence of adductor weakness rather than cutaneous sensory blockad...

OBJECTIVE To evaluate and compare the characteristics of spinal block, its postoperative analgesic effects and side effects using intrathecal bupivacaine and its combination with fentanyl or buprenorphine in elderly patients undergoing urological surgery. METHODS Sixty patients aged sixty and above scheduled for elective transurethral resection of prostate (TURP) randomly received hyperbaric ...

BACKGROUND Some investigators found a greater incidence of hypotension in patients receiving intrathecal hyperbaric solution than in patients receiving plain solution for cesarean section. OBJECTIVE Compare the effects of intrathecal hyperbaric bupivacaine 10 mg with intrathecal bupivacaine 11 mg and intrathecal levobupivacaine 11 mg, all with 10 microg of fentanyl, for cesarean section. MA...

Ropivacaine is a new aminoamide local anaesthetic. Compared with bupivacaine, ropivacaine possesses a higher threshold for systemic toxicity and a high selectivity for sensory fibres. We have compared prospectively these two agents in a concentration of 0.25% for extradural analgesia in labour. A total of 104 parturients requesting extradural analgesia were randomized to receive either ropivaca...

BACKGROUND AND AIMS Use of various adjuvants to spinal anaesthesia is a well-known modality to provide intra- and post-operative analgesia. This study was designed to evaluate and compare the analgesic efficacy of clonidine and magnesium when used as an additive to intrathecal 0.5% hyperbaric bupivacaine. METHODS Ninety patients of the American Society of Anesthesiologists' physical status gr...

The purposes of the present study were to determine if the direction of the needle orifice during injection of anesthetic into the subarachnoid space, using a 25-gauge Whitacre spinal needle (Becton Dickinson, Franklin Lakes, NJ) to deliver 15 mg of 0.75% hyperbaric bupivacaine, affected the level of sensory blockade achieved, and if there was a difference in time from injection to surgical ane...

Labat's classic approach to the sciatic nerve has not been able to show which motor response of the foot provides a more frequent rate of complete sensory and motor block. In this prospective, randomized, double-blind study, we compared plantar flexion with dorsiflexion with regard to onset time and efficacy of sciatic nerve block using the classic posterior approach. A total of 80 patients und...

A prospective, randomized, double-blind study was performed to investigate whether altering the rate of injection of local anaesthetic through a Whitacre needle had any effect on the spinal block achieved. Twenty patients scheduled for elective urological surgery under spinal anaesthesia received an injection of 3 ml of 0.5% plain bupivacaine either by hand (fast) over 10 s (18 ml min(-1)) or b...