View clinical trials related to Analgesia.
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The objective of this trial will be to establish whether the ultrasound-guided suprainguinal fascia iliaca compartment block is capable of protecting geriatric patients with hip fracture from delirium as compared to placebo
This prospective double-blind randomized study will aim at evaluating the short- and long-term postoperative analgesic efficacy of the ultrasound-guided transversus abdominis plane (TAP) block with a combination of local anesthetic and dexmedetomidine in inguinal hernia repair under general anesthesia
Purpose of study is to evaluate the efficacy of transcutaneous electrical nerve stimulation (TENS) for post-operative pain control after a cesarean delivery compared to placebo and no TENS.
The main objective of the study is to demonstrate the efficacy of Dexmedetomidine on the prolongation of analgesia obtained by interscalenic bloc of the brachial plexus and intravenous injection of Dexamethasone (efficacy objective).
The aim of this study is to study the analgesic efficacy of a continuous infusion of local anaesthetics for interscalene brachial plexus block after major shoulder surgery in the setting of multimodal analgesia, in order to determine whether the use of a catheter is still necessary in a contemporary practice.
Intravenous regional anesthesia is one of the well-known techniques of regional anesthesia for short surgical operations on the upper and lower limbs. It was first introduced back in 1908. Later on it was popularized even more for the same purpose by using two tourniquets to isolate an exsanguinated extremity then injection of local anesthesia. It was proved over time to be safe and effective with minimal side effects and complications. Magnesium sulfate (MgSO4) has been used over the 20th century for prevention and treatment of pre-eclamptic and eclampsia seizures during pregnancy because of its superior safety profile over other drugs used for the same purpose. The specific mechanisms of action of magnesium sulfate still unclear but are probably multi-factorial. It may act as a vasodilator on peripheral as well as cerebral vasculature, to decrease peripheral vascular resistance and/or relieve vasoconstriction. Additionally, it may also protect the blood-brain barrier and limit cerebral edema formation, or it may also act as a central anticonvulsant. Fentanyl; was first introduced back in 1990 for palliative use as fentanyl patch. Few years later, it became available in different forms of administration being highly lipophilic. Few years later it became the most widely used synthetic opioid in medicine. It is an opioid analgesic with a rapid onset and short duration of action. It is a potent μ-opioid receptor pure agonist. Fentanyl is 50 to 100 times more potent than morphine. Fentanyl has a relatively wide therapeutic index, which makes it a very safe surgical anesthetic drug when monitored carefully.
The rationale for multimodal analgesia is to achieve additive or synergistic analgesic properties while decreasing the incidence of side effects by reducing the dose of each agent. Nociceptive stimuli are known to activate the release of the excitatory amino acid glutamate in the dorsal horn of the spinal cord. The resultant activation of NMDA receptors causes calcium entry into the cell and triggers central sensitization. This mechanism is involved in the perception of pain and mainly accounts for its persistence during the postoperative period. Peri-incisional injection of local anesthetics is an effective method for pain relief after many surgical procedures, as it can reduce postoperative analgesic consumption. Ropivacaine is a propyl analog of bupivacaine with a longer duration of action with a much safer cardiotoxicity profile than bupivacaine. Thus, a combination of local anesthetic with other analgesic factors, such as opioids, dexmedetomidine, clonidine, ketamine, magnesium sulfate, dexamethasone is suggested for a better analgesic outcome. Dexmedetomidine, a highly selective a2-adrenergic receptor agonist, has been the focus of interest for its broad spectrum (sedative, analgesic, and anesthetic sparing) properties, making it a useful and safe adjunct in many clinical applications. The intravenous, intramuscular, intrathecal, epidural, and perineural use of this agent enhances analgesic effects. Tramadol hydrochloride is a synthetic analog of codeine that acts on both opioid (weak m receptor agonist) and nonopioid receptors (inhibits the reuptake of noradrenaline and serotonin as well as release stored serotonin from nerve endings) which play a crucial role in pain inhibition pathway. It also blocks nerve conduction which imparts its local anesthetics like action on peripheral nerves. It was reported that NMDA antagonists could prolong the analgesic effect of bupivacaine to even a week, as well as inhibit hyperalgesia. Magnesium sulfate (MGS) is a non-competitive antagonist of N-methyl, D-aspartate (NMDA) receptors with an analgesic effect and is essential for the release of acetylcholine from the presynaptic terminals and, similar to calcium channel blockers (CCB), can prevent the entry of calcium into the cell. Aim of the study is to evaluate and compare the postoperative analgesic efficacy of tramadol, dexmedetomidine, and magnesium when added to ropivacaine as an adjuvant for wound infiltration following spine surgery.
Total hip replacement is a common orthopaedic procedure that improves pain and mobility in a variety of pathologies like osteoarthritis, rheumatoid arthritis and avascular necrosis. Post-operative complications, for instance, venous thromboembolism and chest infection have long been documented in literature. These complications can have a bearing on long term survival, and may be prevented by early mobilisation. Therefore, pain control plays an important role in enhancing post-operative recovery, which may also shorten length of stay and reduce overall cost. Multimodal analgesia is applied to these patient, with combination of opioid, oral adjuvant and regional anaesthesia. Each of the components has its own limitation; for opioid, post-operative nausea and vomiting (PONV) and respiratory depression limits its use, and adjuvants like non-steroidal anti-inflammatory drugs (NSAID) are contraindicated in certain patient populations (renal impairment, ischaemic heart disease, coagulopathy). Various regional techniques like femoral nerve block, fascia iliaca block, lumbar plexus block, paravertebral block and epidural anaesthesia are proposed but may be limited by incomplete coverage (due to the innervation by femoral and obturator nerve for the anterior aspect of the joint and sciatic nerve for the posterior aspect, with contribution of lateral cutaneous nerve of thigh for the wound), the invasive nature of the regional technique (psoas haematoma for lumbar plexus block, epidural haematoma for epidural anaesthesia (EA)) or cardiovascular effects like hypotension from EA. Erector spinae block, first introduced by in 2016 as a chronic pain intervention, was also used in hip surgery from a case report in 2018. However, currently the evidence for lumbar ESP block is limited mainly to case reports, while randomised control trial is scarce. More concrete data are required to determine the efficacy of this novel technique. It is postulated that single shot lumbar ESP injected at L1 level can 1) reduced post-operative pain score 2) reduced post-operative 24 hour opioid (fentanyl) use. This study is conducted in Tuen Mun hospital (TMH) and Pok Oi hospital (POH) in Hong Kong. Patient are recruited for the study during pre-anaesthetic assessment, and they are counselled for risk of general anaesthesia and erector spinae plane block (i.e. local infection/bleeding, injury to neighbouring structure, local anaesthetic toxicity).
IN pediatric patient population pain is considered one of the most misunderstood; under diagnosed and under treated medical problems. If left uncontrolled, pain may have a diverse effect on all aspects of life as it is only a sensory perception but also has emotional, cognitive and behavioral components.