TTVR後の閉じ込められたCIEDリードの成功的な摘出
Johannes Kirchner1, Barbara Rubinic1, Muhammed Gerçek1
1Department of General and Interventional Cardiology/Angiology, Herz- und Diabeteszentrum NRW, Ruhr-Universität Bochum, Bad Oeynhausen, Germany.
JACC. Case reports
|January 21, 2026
まとめ
経カテーテル三尖弁置換術(TTVR)は右室(RV)リードを閉じ込める可能性があります。TTVR後のリード摘出は経験豊富なセンターで可能であり、リードなしペースメーカーはRVペーシングの代替案を提供します。
科学分野:
- 心臓病学
- インターベンショナルカーディオロジー
- 心臓電気生理学
背景:
- 経カテーテル三尖弁置換術(TTVR)は、重度の三尖弁逆流症の選択肢です。
- 右室(RV)リードは、TTVRデバイス植込み中に閉じ込められる可能性があります。
研究 の 目的:
- TTVR中のRVリード閉じ込めの症例を報告すること。
- TTVR後のリード摘出の実現可能性と影響について議論すること。
- 代替ペーシング戦略としてのリードなしペースメーカーを評価すること。
主な方法:
- RVリードの閉じ込めを伴うTTVRを受けた83歳女性の症例を記述しています。
- TTVR後のリードインピーダンスモニタリングは、潜在的なリード障害を示しました。
- 閉じ込められたリードが摘出されたリードなしペースメーカーの植込み手技が行われました。
主要な成果:
- 閉じ込められたRVリードは、TTVRデバイスを外すことなく正常に摘出されました。
- リードなしペースメーカーの植込みは、TTVR後のRVペーシングにとって技術的に実行可能でした。
結論:
- TTVR後の閉じ込められたRVリードの摘出は、経験豊富なセンターで可能かもしれません。
- リスクを軽減するために、予防的なリード摘出を検討すべきです。
- リードなしペースメーカーは、TTVR患者におけるRVペーシングの実行可能な代替案です。
関連する概念動画
Ecological Succession
21.3K
Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species create more favorable ecological conditions for subsequent species, such as enhanced nutrient, water, or light availability. In contrast, inhibition happens when early successional species create unfavorable ecological conditions for potential successive species, such as limiting resource availability. In some cases, later successional species...
21.3K
Phase-lead and Phase-lag Controllers
536
Understanding the working function of different types of controllers can be illustrated with practical analogies, such as adjusting a stereo's volume equalizer. Cranking up the bass involves a phase-lead controller, which functions as a high-pass filter, while increasing the treble uses a phase-lag controller, which acts as a low-pass filter. PD controllers, similar to high-pass filters, enhance the system's response to high-frequency components. PI controllers, akin to low-pass...
536
Time and frequency -Domain Interpretation of Phase-lead Control
435
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
435
Extraction: Effects of pH
1.3K
Consider a neutral form of an amine, B, with a partition coefficient, K, in a liquid mixture containing organic and aqueous phases. The pH of the aqueous phase affects the charge on acidic and basic solutes, and the charged form is usually more soluble in the aqueous phase. Suppose the conjugate acid form of the amine is soluble only in the aqueous phase while the base form is soluble in both phases. Then the distribution coefficient, D, can be given as the ratio of amine concentration in the...
1.3K
Extraction: Advanced Methods
1.1K
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
1.1K
Extraction: Partition and Distribution Coefficients
4.6K
The distribution law or Nernst's distribution law is the law that governs the distribution of a solute between two immiscible solvents. This law, also known as the partition law, states that if a solute is added to the mixture of two immiscible solvents at a constant temperature, the solute is distributed between the two solvents in such a way that the ratio of solute concentrations in the solvents remains constant at equilibrium.
For extracting a solute from an aqueous phase into an...
For extracting a solute from an aqueous phase into an...
4.6K


