Articles: nerve-block.
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Acute postoperative pain is one of the most common challenges faced by patients who undergo surgery. Multimodal analgesia has been recommended in recent years to effectively control this condition. Nerve blocks are an important part of multimodal analgesia; a single peripheral nerve block is widely used in clinical practice. To prolong the analgesic duration of a single nerve block, adjuvants with different mechanisms, dosages, or administration routes are added to local anesthetics; however, it is not clear which adjuvant or combination is better. ⋯ Adjuvants with diverse mechanisms of action can variably extend the duration of local anesthetic effects. When utilizing adjuvants in conjunction with local anesthetics, perineural dexmedetomidine (1 mu-g/kg) or intravenous dexamethasone (10 mg) may be preferable, considering their efficacy and side effects. Current research suggests that the combination of perineural dexmedetomidine (1 mu-g/kg) and intravenous dexamethasone (10 mg) is more effective than either dexmedetomidine or dexamethasone alone.
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The purpose of this review is to summarize the recent literature regarding regional anesthesia (RA) techniques and outcomes for total hip arthroplasty (THA) in the face of changing surgical techniques and perioperative considerations. ⋯ Based on large meta-analyses, peripheral nerve blocks are indicated for THA. Each block has its own risks and benefits and data for outcomes for particular techniques are limited. New surgical techniques, improved use of multimodal analgesia, and improved ultrasound guided regional anesthetics lead to better pain control for patients undergoing THA with less associated risks. Block selection continues to be influenced by provider comfort, surgical approach, patient anatomy, and postoperative goals. Head-to-head studies of particular nerve blocks are warranted.
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Acta Anaesthesiol Scand · Nov 2024
Duration of peripheral nerve blocks in opioid-tolerant individuals: A study protocol.
Peripheral nerve blocks effectively alleviate postoperative pain. Animal studies and human research suggest that opioid tolerance may reduce the effectiveness of local analgesics. The reduced effectiveness has been observed in opioid-tolerant humans and animals undergoing spinal and infiltration anaesthesia with both lidocaine and bupivacaine. However, the impact on peripheral nerve blocks in humans has not been evaluated. This study aims to assess the onset time and duration of a radial nerve block in opioid-tolerant individuals compared to opioid-naive individuals. We hypothesise that peripheral nerve blocks may be less effective in producing sensory and motor blockades in opioid-tolerant individuals compared to their opioid-naive counterparts. ⋯ This study will compare the effectiveness of a peripheral nerve block between opioid-tolerant and opioid-naïve individuals. Any found differences could support a specific postoperative protocol for opioid-tolerant individuals regarding the use of peripheral nerve blocks.
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Medial branch blocks are used to select patients for cervical facet joint radiofrequency neurotomy (CRFN). Blocks are typically performed under fluoroscopic guidance (ie, fluoroscopy-guided blocks [FLBs]). The validity of ultrasound-guided blocks (USBs) is not well established. No prior research has compared cervical USB validity and FLB validity with CRFN outcome used as the criterion standard. ⋯ This study finds cervical USB and FLB to be comparably valid as defined by their ability to predict CRFN outcome. Within the limitations of operator competence, USB can be used to select patients for CRFN.