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関連する概念動画

Compass01:23

Compass

6.8K
The compass is a fundamental instrument that operates by aligning its magnetic needle with Earth's magnetic field. This alignment facilitates navigation and orientation, offering a means to determine direction relative to magnetic north. However, the magnetic needle points to magnetic north, which differs slightly from true geographic north due to magnetic declination, which is the angular deviation between these two points. Declination varies based on geographic location and shifts over time...
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Design Example: Marking Boundaries of a Site Using a Compass01:12

Design Example: Marking Boundaries of a Site Using a Compass

291
Marking site boundaries using a compass is a precise surveying technique that ensures the accuracy of boundary delineation. The process begins by using provided site details, including the bearings and lengths of each boundary line. The initial step involves calculating latitudes and departures for all sides of the site. This computation verifies that the traverse is free of errors, ensuring a closed and accurate boundary.The process starts at a known point, such as Point A, which is often...
291
Clinical Trials: Overview01:11

Clinical Trials: Overview

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Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
4.9K
Trial and Error and Algorithm01:12

Trial and Error and Algorithm

407
A problem-solving strategy is a plan of action used to find a solution. Different strategies have distinct action plans. Trial and error involves trying different solutions until one works. For instance, to fix a broken printer, you might check ink levels, ensure the paper tray isn't jammed, and verify the printer's connection to your laptop. This method can be time-consuming but is commonly used. Thomas Edison, for example, used trial and error to find a suitable filament for the light...
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Clinical Trials01:16

Clinical Trials

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Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and medical devices. Using statistics in clinical trials enables researchers to derive reasonable and accurate conclusions from the collected data, allowing them to make wise decisions in uncertain situations. In medical research, statistical methods are crucial for preventing errors and bias.
There are four phases in a clinical trial. A phase one...
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Predicting Reaction Outcomes02:24

Predicting Reaction Outcomes

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Kinetics describes the rate and path by which a reaction occurs. In contrast, thermodynamics deals with state functions and describes the properties, behavior, and components of a system. It is not concerned with the path taken by the process and cannot address the rate at which a reaction occurs. Although it does provide information about what can happen during a reaction process, it does not describe the detailed steps of what appears on an atomic or a molecular level. On the other hand,...
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COMPASS 試験における脳卒中の結果

Mukul Sharma1, Robert G Hart1, Stuart J Connolly1

  • 1McMaster University/Population Health Research Institute, Hamilton, Canada (M.S., R.G.H., S.J.C., J.B., O.S., K.K.H.N., L.C., S.Y., J.W.E.).

Circulation
|January 23, 2019
PubMed
まとめ
この要約は機械生成です。

リバロキサバンとアスピリンの併用は,アテロスクレロスの患者の脳卒中を,アスピリンの単独投与と比較して有意に減少させた. この併用療法により,脳卒中を予防する新しい抗血栓療法が提供されます.

キーワード:
アスピリン動脈硬化症予防と対策ランダム化制御試験リバロキサバンストローク

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科学分野:

  • 心血管医学
  • 薬理学について
  • 神経学

背景:

  • COMPASS試験では,安定した冠動脈または外周動脈疾患の患者に対する抗血栓戦略を調査した.
  • 脳卒中の減少は試験の重要な結果でした.
  • 以前の分析では,リバロキサバンとアスピリンの併用は,アスピリンの単独投与よりも有意な効果を示した.

研究 の 目的:

  • COMPASS 試験の主要なサブグループにおける脳卒中の種類,予測値,および抗血栓効果の詳細な分析を提示する.
  • リバロキサバンとアスピリンの効果と,アスピリンの単独投与の効果を評価する.
  • 既定の動脈硬化症患者の脳卒中の独立予測要因を特定する.

主な方法:

  • 安定した冠動脈または外周動脈疾患の患者を対象としたランダム化試験.
  • 3つの治療群:アスピリン100 mg 1日1回,リバロキサバン5 mg 1日2回,リバロキサバン2.5 mg 1日2回とアスピリン.
  • 排除の基準には,抗凝固薬の必要性,最近の脳卒中,脳卒中歴,脳内出血が含まれていた.

主要な成果:

  • リバロキサバンとアスピリンの併用は,アスピリンの単独投与と比較して,脳卒中の発生率を大幅に低下させた (HR,0. 58; P< 0. 0001).
  • 併用療法では,血性/不確実性脳卒中がほぼ半減した (HR,0. 51; P< 0. 0001).
  • 致死性および障害性脳卒中も,この組み合わせにより減少した (HR,0. 58; P=0. 01).
  • 前回の脳卒中は,脳卒中発生の最も強い独立予測因子であった (HR,3. 63; P< 0. 0001).
  • 前回の脳卒中を含む,脳卒中リスクの高いサブグループにおいて,この組み合わせの効果は一貫していました.

結論:

  • 低用量リバロキサバンとアスピリンは,抗血栓治療における重要な進歩を示しています.
  • この組み合わせは,臨床性動脈硬化症の患者における,原発性および二次性脳卒中の予防に有効な選択肢です.
  • この発見は,脳卒中のリスクの高い特定の患者集団において,リバロキサバンとアスピリンの使用を支持する.