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関連する概念動画

Local Anesthetics: Clinical Application as Intravenous Regional Anesthesia01:16

Local Anesthetics: Clinical Application as Intravenous Regional Anesthesia

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Intravenous regional anesthesia or the Bier block technique is used to anesthetize a specific limb or extremity. It uses exsanguinated or blood-drained vessels to transport local anesthetics or LAs to the peripheral nerve trunks. Lidocaine without vasoconstrictors like epinephrine is most commonly used for this technique. Other drugs used are prilocaine, ropivacaine, and chloroprocaine. Bupivacaine is not recommended for this technique due to its high cardiac toxicity.
One of the advantages of...
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Classifying Matter by State02:49

Classifying Matter by State

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Chemistry is the study of matter and the changes it undergoes. Matter is anything that has mass and occupies space. Matter is all around us; the air, water, soil, mountains, even our bodies are all examples of matter. Matter is divided into three states — solid, liquid, and gas — that are commonly found on earth. The fourth state of matter, plasma, occurs naturally in the interiors of stars. 
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Bones of the Upper Limb: Humerus01:19

Bones of the Upper Limb: Humerus

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The upper limb consists of the arm, forearm, wrist, and hand bones. The humerus is the single bone of the upper arm region. Proximally, it has a large, spherical, smooth head that articulates with the glenoid cavity of the scapula to form the glenohumeral or shoulder joint. The margin of the head is the anatomical neck, a residual epiphyseal plate. Laterally it extends to form bony projections called the greater tubercle and the lesser tubercle. Next to the tubercles is the surgical neck, a...
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Classifying Matter by Composition03:35

Classifying Matter by Composition

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Matter: Pure Substances and Mixtures
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures. 
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated. 
A mixture is composed of two or...
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Physical and Chemical Properties of Matter02:57

Physical and Chemical Properties of Matter

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The characteristics that enable us to distinguish one substance from another are called properties.
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The Atomic Theory of Matter02:59

The Atomic Theory of Matter

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The earliest recorded discussion of the basic structure of matter comes from ancient Greek philosophers. Leucippus and Democritus argued that all matter was composed of small, finite particles that they called atomos, meaning “indivisible.” Later, Aristotle and others came to the conclusion that matter consisted of various combinations of the four “elements” — fire, earth, air, and water — and could be infinitely divided. Interestingly, these philosophers...
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関連する実験動画

Updated: Jan 27, 2026

An In Vivo Mouse Model of Total Intravenous Anesthesia During Cancer Resection Surgery
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近位部上腕骨手術後の転帰：区域麻酔の使用は影響するか？

Bill Young1, Amy L Ladd1

  • 1Department of Orthopaedic Surgery, Stanford University, Stanford, CA.

Journal of hand surgery global online
|January 26, 2026
PubMed
まとめ

近位部上腕骨骨折手術における区域麻酔は、救急部門への受診およびオピオイド処方箋の増加につながった。区域麻酔を受けた患者におけるこれらの有害事象を減らすためのさらなる研究が必要である。

科学分野:

  • 整形外科学
  • 麻酔科学
  • 医療サービス研究

背景:

  • 区域麻酔は、近位部上腕骨骨折手術中の疼痛管理に一般的に用いられる方法である。
  • 全身麻酔は、これらの処置における疼痛管理の代替アプローチである。

研究 の 目的:

  • 近位部上腕骨骨折手術における区域麻酔と術後転帰との関連を調査すること。
  • 区域麻酔群と全身麻酔群の間で、救急部門の利用、周術期のオピオイド処方箋、および持続的なオピオイド使用を比較すること。

主な方法:

  • 近位部上腕骨骨折に対する開放整復内固定術（ORIF）または肩関節形成術を受けた患者の後ろ向き分析。
  • 区域麻酔を受けた患者と全身麻酔を受けた患者を比較するために、傾向スコアマッチングを使用した。
  • 転帰には、7日および30日以内のED受診、および周術期および持続的なオピオイド処方箋が含まれた。

主要な成果:

  • 区域麻酔は、ORIFおよび肩関節形成術の両方の患者において、手術後7日および30日以内のED受診の有意な増加と関連していた。
  • 区域麻酔を受けた患者は、全身麻酔を受けた患者と比較して、周術期のオピオイド処方箋も多かった。
  • 持続的な術後オピオイド処方箋の発生率が区域麻酔群で高く観察されたが、提供されたテキストでは明示的に詳述されていない。
キーワード:
救急科骨折オピオイド近位部上腕骨区域麻酔

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結論:

  • 近位部上腕骨骨折手術における区域麻酔は、術後のED利用の増加とオピオイド処方箋率の上昇に関連している。
  • この患者集団における区域麻酔に関連する潜在的な有害事象を軽減するための介入が必要である。
  • ED受診およびオピオイド関連合併症を減らすためのさらなる調査が保証される。