ニードルナイフ内視鏡的乳頭切開術を容易にするための粘膜下注入:新規技術
Kambiz Kadkhodayan1, Shayan Irani2, Sagar Pathak1
1Center for Interventional Endoscopy, AdventHealth, Orlando, Florida, USA.
まとめ
粘膜下色素注入は、胆道アクセスのための救済技術であるニードルナイフ内視鏡的乳頭切開術(NKS)中の視覚化を改善します。この新しい方法は、解剖学的平面の識別を強化し、制御された解剖を助け、困難な症例での有害事象を防ぎます。
科学分野:
- 消化器病学
- 内視鏡的逆行性胆管膵管造影(ERCP)
- インターベンショナル内視鏡検査
背景:
- ニードルナイフ内視鏡的乳頭切開術(NKS)は、胆道アクセスにおける重要な救済技術です。
- 平坦(タイプ1)乳頭は、組織面の視覚化が悪いため、NKSに課題をもたらし、出血や穿孔のリスクを高めます。
- NKS中の有害事象は、解剖学的平面の識別の困難さと関連していることがよくあります。
研究 の 目的:
- NKS中の視覚化を改善するための粘膜下色素注入を用いた新規技術を説明すること。
- NKS処置における解剖学的平面識別の向上のための粘膜下色素注入の有用性を実証すること。
- 困難な胆道アクセスに対する粘膜下色素注入を用いたNKSの成功例を提示すること。
主な方法:
- 膵臓癌と閉塞性黄疸の59歳女性患者がERCPを受けました。
- 標準的な乳頭切開術は平坦な乳頭のために失敗したため、粘膜下リフトを伴うNKSが採用されました。
- ヘタスターチとメチレンブルー3mLを粘膜下に注入し、リフトを作成した後、制御された解剖を行いました。
主要な成果:
- ヘタスターチとメチレンブルーの粘膜下注入は、適切な粘膜下リフトを成功裏に作成しました。
- 層ごとに解剖を行い、胆管の深いカニューレ挿入を達成しました。
- 出血や穿孔などの有害事象なしに処置は完了しました。
結論:
- 粘膜下色素注入は、NKS中の解剖学的平面の視覚化を大幅に向上させます。
- この技術により、制御された解剖学的にガイドされた解剖が可能になり、安全性と有効性が向上します。
- 粘膜下色素注入は、特に平坦な乳頭を持つ症例において、困難なNKS処置に価値のある補助となります。
関連する概念動画
Facilitated Transport
147.5K
The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and hydrophilic regions, substances need to be able to transverse both regions. The hydrophobic area of membranes repels substances such as charged ions. Therefore, such substances need special membrane proteins to cross a membrane successfully. In facilitated transport, also known as facilitated diffusion, molecules and ions travel across a...
147.5K
Facilitated Transport
18.7K
The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and hydrophilic regions, substances need to be able to transverse both regions. The hydrophobic area of membranes repels substances such as charged ions. Therefore, such substances need special membrane proteins to cross a membrane successfully. In facilitated transport, also known as facilitated diffusion, molecules and ions travel across a...
18.7K
Social Facilitation
36.6K
Not all intergroup interactions lead to negative outcomes. Sometimes, being in a group situation can improve performance. Social facilitation occurs when an individual performs better when an audience is watching than when the individual performs the behavior alone. This typically occurs when people are performing a task for which they are skilled.
36.6K
Facilitated Diffusion
1.3K
The plasma membrane, a critical structure in cellular biology, houses an array of transporters, or carrier proteins, interspersed within its lipid bilayer. These proteins play a crucial role in solute transport through facilitated diffusion, a form of passive diffusion that uses transporters to move the molecules across the membrane.
In this process, substrates such as organic compounds and ions interact with a transporter on one side, triggering conformational changes in proteins that enable...
In this process, substrates such as organic compounds and ions interact with a transporter on one side, triggering conformational changes in proteins that enable...
1.3K
Gas Chromatography: Sample Injection Systems
1.5K
In gas chromatography, the sample is introduced as a vapor plug into the carrier gas stream for high efficiency and resolution. A microsyringe injects the sample solution into a heated sample port, vaporizing it and mixing it with the carrier gas. This process is important to ensure the sample is properly prepared for analysis. Thermally sensitive samples can be injected directly into the column and volatilized by slowly increasing the column temperature.
Two primary injection methods are used...
Two primary injection methods are used...
1.5K
Simple Staining Technique
3.5K
OverviewStaining techniques in microscopy enhance the visualization of microorganisms by increasing contrast and allowing the differentiation of cellular structures. Simple staining is one of the fundamental methods used to observe the basic morphological characteristics of microorganisms, including their size, shape, and arrangement. This method relies on the application of a single dye to stain the entire cell, producing a clear contrast between the cell and the background.FixationFixation is...
3.5K


