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相关概念视频

Directly Acting Muscle Relaxants: Dantrolene and Botulinum Toxin01:26

Directly Acting Muscle Relaxants: Dantrolene and Botulinum Toxin

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Directly acting muscle relaxants like dantrolene and botulinum toxin (BoNT) have distinct mechanisms and applications. Dantrolene, a hydantoin derivative, acts on the ryanodine receptor (RYR1) in skeletal muscle cells. RYR1 are calcium channels present at the sarcoplasmic reticulum membrane. In response to excitation, they release calcium ions from the sarcoplasmic reticulum to the cytosol. Calcium promotes actin-myosin-mediated contraction of muscles.
The binding of dantrolene to the RYR1...
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Skeletal Muscle Relaxants: Therapeutic Uses01:31

Skeletal Muscle Relaxants: Therapeutic Uses

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Skeletal muscle relaxants are used to relax muscle tone and alleviate painful muscle contractions. However, the choice of skeletal muscle relaxants depends on the duration of the surgical procedure in order to minimize potential side effects. Skeletal muscle relaxants like neuromuscular blocking agents [NMBAs] are commonly employed as adjuvants alongside general anesthetics in clinical settings. NMBAs are also used to maintain controlled ventilation during surgery of the larynx or pharynx...
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Peripherally and Centrally Acting Muscle Relaxants: A Comparison01:09

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Skeletal muscle relaxants can target the central nervous system [CNS] to reduce muscle tension or act directly at the neuromuscular junction to induce temporary paralysis. These two classes of muscle relaxants are called centrally acting muscle relaxants and peripherally acting muscle relaxants. They differ in their action, mechanism, administration route, and clinical uses.
Centrally acting muscle relaxants can be further divided into spasmolytic and antispasmodic drugs. Spasmolytic...
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Depolarizing Blockers: Pharmocokinetics01:19

Depolarizing Blockers: Pharmocokinetics

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Depolarizing blockers are administered through intravenous injection. Succinylcholine is the most common choice of depolarizing blockers in emergency clinical practices. Although they have a rapid onset, they readily diffuse away from the motor end plate into the extracellular fluid. They are metabolized by enzymes such as liver butyrylcholinesterase and plasma pseudocholinesterases. This produces a short duration of action, typically 5-10 minutes long, unlike nondepolarizing blockers, which...
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Nondepolarizing (Competitive) Neuromuscular Blockers: Pharmacological Actions01:27

Nondepolarizing (Competitive) Neuromuscular Blockers: Pharmacological Actions

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Nondepolarizing neuromuscular blockers prevent the membrane depolarization of muscle cells and inhibit muscle contraction. These are usually administered with anesthetics to achieve complete muscle relaxation. Upon administration, these drugs first block the small, rapidly contracting muscles of the face and hands, followed by the larger muscles of the trunk and the intercostal muscles. The diaphragm is the last muscle to be affected.
Although all competitive neuromuscular blockers are designed...
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Nondepolarizing (Competitive) Neuromuscular Blockers: Mechanism of Action01:17

Nondepolarizing (Competitive) Neuromuscular Blockers: Mechanism of Action

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Nondepolarizing neuromuscular blockers induce paralysis by competitively blocking nicotinic acetylcholine receptors at the muscle end plate. Examples include pancuronium, mivacurium, vecuronium, and rocuronium. These quaternary ammonium derivatives are administered intravenously, are poorly absorbed, and are excreted via the kidneys.
Competitive antagonists prevent acetylcholine from binding to its receptor, inhibiting membrane depolarization. Without conformational changes or intrinsic...
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Ultrasound-guided Botulinum Toxin-A Injections: A Method of Treating Sialorrhea
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比较注射方法的肉毒素A的宫 dystonia:一个系统的审查.

Hristo Shipkov1,2, Petar Uchikov1, Abdulrahman Imran3

  • 1Department of Special Surgery, Faculty of Medicine, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria.

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概括

超声波和EMG导向的注射改善了毒素A型 (BoNT-A) 治疗宫 dystonia (CD) 的方法,通过提高比传统方法的准确性和安全性. 结合这两种技术可能为患者提供最佳的治疗结果.

关键词:
肉毒毒素注射剂 肉毒毒素注射剂宫性 dystonia 宫性 dystonia 宫性 dystonia 宫性 dystonia 宫性 dystonia 宫性 dystonia 宫性 dystonia 宫性 dystonia 宫性 dystonia 宫性 dystonia 宫性 dystonia 宫性 dystonia 宫性 dystonia 宫性 dystonia超声波和EMG指导的使用.

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科学领域:

  • 神经学 神经学
  • 医疗成像医学成像
  • 药理学 药理学是指药理学的学科.

背景情况:

  • 宫性 dystonia (CD) 是一种神经疾病,导致非自愿的部肌肉收缩,疼痛和功能障碍.
  • 毒素A型 (BoNT-A) 是主要的治疗方法,但其有效性取决于精确的注射技术.
  • 目前的方法包括触摸指导,超声波指导和电肌谱指导 (EMG) 注射,每一种都有利弊.

研究的目的:

  • 系统地审查和综合有关不同BoNT-A注射技术对宫性 dystonia 的有效性和安全性的证据.
  • 为了比较心脏病治疗中触摸,超声波和EMG指导的准确性,肌肉准和不良事件概况.

主要方法:

  • 在PubMed和Scopus进行了系统的文献搜索,直到2024年12月30日.
  • 包括报告BoNT-A注射方法在成人CD患者中临床结果的研究.
  • 关于有效性,安全性,准确性和肌肉向的数据被提取和合成.

主要成果:

  • 分析了7项涉及239名患者的研究,其中torticollis/torticaput是最常见的CD亚型.
  • 超声指导显示出更高的准确性和更少的不良事件由于实时可视化.
  • 电磁磁图指导在识别反肌肉方面表现出色,特别是在复杂的解剖学方面,而触摸不那么准确.
  • 平均BoNT-A剂量因产品而异:对onabotulinumtoxinA/incobotulinumtoxinA的117-118个单位和对abobotulinumtoxinA的405个单位. 副作用通常是轻微的.

结论:

  • 超声波和EMG引导的BoNT-A注射提供了与触摸引导的方法相比,在宫 dystonia 中提供了更好的精度,安全性和有效性.
  • 超声波增强了解剖学准确性,而EMG对于功能性肌肉识别至关重要;它们的联合使用可以优化治疗.
  • 需要进一步进行高质量的标准化试验,以确定CD中BoNT-A注射技术的最终最佳实践.