セプシスの新しい臨床現象の誘導,検証,および潜在的な治療への影響
Christopher W Seymour1,2,3, Jason N Kennedy1,3, Shu Wang4
1Department of Critical Care Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania.
JAMA
|May 20, 2019
まとめ
研究者は臨床データを用いて4つの異なった結血症の表型を特定した. これらのセプシスのサブタイプは宿主反応と患者のアウトカムと相関し,治療の精度と臨床試験の設計を改善する可能性がある.
科学分野:
- クリティカル ケア 医療
- データサイエンス
- バイオ統計学
背景:
- セプシスは複雑で異質な症候群で 精密な治療戦略が必要です
- 明確な臨床的現象型を特定することで,よりターゲットを絞った治療法と患者のケアが改善できます.
研究 の 目的:
- 電子医療記録のデータから 異なるセプシスの臨床現象を導き出し,検証する.
- これらのフェノタイプと宿主反応バイオマーカーと臨床結果の相関性を評価する.
- ランダム化臨床試験 (RCT) の結果の解釈に対するこれらの現象型の潜在的な影響を評価する.
主な方法:
- 大規模なセプシスデータセット (20,000人以上の患者) を29の変数に関するコンセンサス k- 平均クラスタリングを用いて遡及分析した.
- 別々の大規模なコホート (43,000人以上の患者),肺炎性毒性コホート,および3つの毒性RCTでの検証.
- 統計学,機械学習,シミュレーションツールが使われました.
主要な成果:
- 4つの異なるセプシス現象型 (α,β,γ,δ) が識別され,その頻度と臨床的特徴 (例えば,年齢,併発症,臓器機能障害) は様々であった.
- 宿主反応のバイオマーカーの一貫した差異と28日と365日間の死亡率の有意な差異が表型によって観察された (α: 5%, β: 13%, γ: 24%, δ: 40%).
- シミュレーションモデルは,フェノタイプ頻度が,治療効果の異質性を示唆し,RCTの結果の解釈を大幅に変化させることが示された.
結論:
- 異なる宿主反応パターンと死亡率に関連した4つの再現性性毒症の臨床表型が特定されました.
- これらの現象型は,セプシスの異質性を理解し,個別化された治療戦略を導くための潜在的な枠組みを提供します.
- これらのフェノタイプを臨床実践に統合し,臨床試験の設計と解釈を洗練するためにさらなる研究が必要である.
関連する概念動画
Reliability and Validity
13.8K
Reliability and validity are two important considerations that must be made with any type of data collection. Reliability refers to the ability to consistently produce a given result. In the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways.
13.8K
Cell Potential and Free Energy
46.4K
Thermodynamics of a Redox Reaction
Thermodynamics is the branch of physics dealing with the relationship between heat and other forms of energy. In an electrochemical cell, chemical energy is converted into electrical energy.
Thus, a link can be predicted between cell potential, free energy change, and the equilibrium constant for the reaction. Cell potential can also be measured as the oxidant or the reducing strength, and similar acid-base strength measures are reflected in equilibrium...
Thermodynamics is the branch of physics dealing with the relationship between heat and other forms of energy. In an electrochemical cell, chemical energy is converted into electrical energy.
Thus, a link can be predicted between cell potential, free energy change, and the equilibrium constant for the reaction. Cell potential can also be measured as the oxidant or the reducing strength, and similar acid-base strength measures are reflected in equilibrium...
46.4K
Data Validation
6.4K
Data validation is an essential part of a comprehensive assessment. Validation is confirming or verifying and opening the door to gathering more assessment data as it clarifies vague or unclear data. The process of checking and verifying the collected information is called data validation. The primary purpose of data validation is to ensure data is as free from error, bias, and misinterpretation as possible.
Nursing assessment guides are generally based on holistic models rather than medical...
Nursing assessment guides are generally based on holistic models rather than medical...
6.4K
Data Validation
713
Method validation is a crucial process in analytical chemistry designed to confirm that a given method consistently produces reliable and high-quality results. This process is essential when a method is applied to different sample matrices or when procedural modifications are made, ensuring that the results meet acceptable standards across various applications.
Key parameters for method validation include:
Key parameters for method validation include:
713
Potential Energy
42.4K
The energy stored by a structure and location of matter in space is called potential energy. For instance, raising a kettlebell changes its spatial location and increases its potential energy. Similarly, a stretched rubber band contains potential energy which, under certain conditions, can be converted into other forms of energy, such as kinetic energy.
Chemical bonds that form attractive forces between atoms also contain potential energy, called chemical energy. When a chemical reaction...
Chemical bonds that form attractive forces between atoms also contain potential energy, called chemical energy. When a chemical reaction...
42.4K
Standard Electrode Potentials
50.0K
On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
50.0K


