View clinical trials related to Regional Anaesthesia.
Filter by:Brain cortex controls movement but the influence of peripheral component of movement on the cortex is not known. Functional Magnetic Resonance Imaging(fMRI) studies in stroke and fantom limb patients investigate cortex areas activated during execution and imagination of complex hand movements. These studies aim to understand the mechanisms of the motor component of movement but the results are limited as there is no effector organ in fantom limb patients and the affecting organ is damaged in stroke patients. The investigators hypothesized that the areas of the cortex that is activated to remember, set-up and order to move can be isolated from the areas that are activated during the motor component of movement. To prove this hypothesis the investigators developed a model that investigate the brain activation areas during the patient try to execute and imagine doing a complex motor task (sequential opposition with the thumb to the other four fingers) with a peripherally blocked arm. Brain fMRI in 15 right-handed patients scheduled to undergo right-hand surgery with peripheral block anesthesia will be obtained before the surgery day and just before surgery after the block. Participants will be screened when executing the task (after the block they just attempt), during rest and during they imagine doing the task. Bilateral cortex activation areas will be compared when the right hand was intact and was peripherally blocked. There are many unknowns in the relationship between the brain-peripheric organ during movement. The investigators hope that some of these mechanisms will be identified by the new model we used in our study. The final benefit will be to develop stroke therapies and new therapies for neuropathic pain which is closely related to motor function.
The main goal is to determine the optimum dose of ropivacaine, a local anaesthetic, that provides regional anaesthesia with no or minimum adverse effects (i.e. hypotension) when given spinally in healthy full term tall parturients scheduled to undergo caesarean section under combined spinal / epidural anaesthesia (CSEA). The participants' height threshold is based on a local anthropometric research, which included over 2000 people. According to the above research the investigators calculated the female height distribution and decided to include in the study those distributed in the upper quartile (75th to 99th percentile). The female height distribution of the upper quartile ranges from 167 to 184 cm. Secondary objectives are adverse effects related to the anaesthetic technique (hypotension, discomfort, nausea, vomiting and pruritus), the speed of installation and the duration of the regional block (both sensory and motor), blood gas analysis of the newborn umbilical blood as well as newborn Apgar score and lastly the mothers' degree of satisfaction. This is a prospective non randomized double-blinded trial in which a specific algorithm for the local anaesthetic dose will be adopted (up-down sequential allocation). A written informed consent will be required by all participants. The perioperative management of all participants will follow standard clinical protocols. The dose of ropivacaine for each parturient is determined by the response of the previous participant to a higher or lower dose according to the sequential distribution algorithm (up-down sequential allocation). Specifically, the dose of ropivacaine for each parturient (except for the first) will fluctuate by 0.375 mg depending on the success (decrease by 0.375 mg) or failure (increase by 0.375 mg) of the spinal anaesthesia of the previous parturient enrolled in the study. The local anaesthetic dose of the first participant will be determined by a short pilot study.
In spine surgery postoperative pain can often be severe and difficult to treat.With the use of ultrasound, the performance of plane blocks and other techniques like root blocks, facet infiltration have become possible without the use of either unreliable " pop-techniques" or the use of x-ray.The erector spinae block was recently described as a safe and simple and safe technique for neuropathic pain and acute post surgical pain, with effect on the dorsal rami of the spinal nerves and with promising results. In this observational pilot study we want to test the influence of these to blocks on the postoperative pain and opioid consumption after spine fusion.
This study aimed to evaluate the efficacy of ultrasound guided femoral 3 in 1 block versus the blind technique single shot fascia iliaca compartment block as an analgesia method in patients prior positioning for spinal anaesthesia in femur fracture surgery. A total of 60 patients were enrolled and divided equally into 2 groups.
The aim of this study is to compare conventional and ultrasound guided paravertebral blocks to with respect to efficacy, patient satisfaction and complication rates.
The investigators would like to compare the stiffness inside and outside nerves using a special type of ultrasound imaging called shear wave elastography. Shear wave elastography is a special form of ultrasound as the pictures taken are in colour. An ultrasound machine has different ways of taking pictures of inside the body: one is by measuring the brightness of different body parts (often referred to as the B-Mode scan), the pictures taken in this way are the same as those you may have seen of unborn babies inside their mum's tummies; another way is by measuring the stiffness of different body structures which is how shear wave elastography works. The investigators hope that this new technology will help doctors to see the parts of the body that are important to them.