When motor commands are accompanied by an unexpected outcome, the resulting error induces changes in subsequent commands. However, when errors are artificially eliminated, changes in motor commands are not sustained but show decay. Why does the adaptation-induced change in motor output decay in the absence of error? A prominent idea is that decay reflects the stability of the memory. We show re...

Objective: To compare the block characteristics and haemodynamic stability of intrathecal Ropivacaine and Levobupivacaine with Fentanyl and Magnesium as adjuvants for lower abdominal surgeries. Method: Sixty patients of ASA grade I and II coming for elective lower abdominal surgeries under spinal anaesthesia were randomly allocated to two groups with 30 patients in each group. Group R received ...

BACKGROUND Early studies suggested that ropivacaine had clinical advantages over bupivacaine with respect to cardiotoxicity and motor block, and that it was suitable for epidural caesarean section. This study was set up to compare epidural 0.75% ropivacaine with a popular bupivacaine/fentanyl mixture for elective caesarean section. METHODS Eighty women having elective caesarean section under ...

Epidural blockade is becoming one of the most useful and versatile procedures in modern anesthesiology. Bupivacaine is a long acting amide local anaesthetic which is widely used since many years. However, it is associated with a number of side effects like Central Nervous System (CNS) toxicity and cardiotoxicity. Ropivacaine is a newly introduced long acting amide local anaesthetic drug in Indi...

The motor pattern that drives coordinated movements of swimmerets in different segments during forward swimming characteristically begins with a power-stroke by the most posterior limbs, followed progressively by power-strokes of each of the more anterior limbs. To explain this caudal-to-rostral progression, the hypothesis was proposed that the neurons that drive the most posterior swimmerets a...

BACKGROUND Brachial plexus block is useful for upper extremity surgery, and many techniques are available. The aim of our study was to compare the efficacy of axillary brachial plexus block using an ultrasound technique to the peripheral nerve stimulation technique. METHODS 60 patients scheduled for surgery of the forearm or hand were randomly allocated into two groups (n = 30 per group). For...

PURPOSE To compare the effect on the incidence of motor block by reducing the concentration of ropivacaine from 0.2% to 0.125% in parturient-controlled epidural analgesia (PCEA) for labour. METHODS Randomized, controlled and double-blind trial involving parturients in early labour who received demand-only PCEA regimen (bolus 5 ml, lockout 10 min, maximum volume per hour of 20 ml) with either ...

BACKGROUND AND OBJECTIVES Clinical effects and the potential synergism between clonidine, an alpha2-adrenergic agonist, and ropivacaine have not been studied in patients undergoing epidural anesthesia. This research aimed at clinically evaluating clonidine associated to ropivacaine for epidural anesthesia. METHODS Participated in this double-blind study 60 patients of both genders who were di...

Background: Bier block is a reliable technique used in extremity surgeries. Typically, angiocatheters are palced in the distal portion of the extremity that is going to be operated. Although, it is not the case in every operation. Therefore, determining the effectiveness of the local anesthetic injection site on the quality of the upper-extremity block can be helpful. Methods: In this double-b...

BACKGROUND Ropivacaine provides effective spinal anaesthesia for total hip arthroplasty. This study was designed to compare the efficacy and safety of plain ropivacaine with plain bupivacaine for spinal anaesthesia in patients undergoing total hip arthroplasty. METHODS Sixty-six patients, ASA I or II, were randomized to receive an intrathecal injection of one of two local anaesthetic solution...