関連する実験動画

Updated: Feb 8, 2026

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation

Published on: February 26, 2013

左心耳閉鎖術を伴うパルスフィールドアブレーションによる左心耳起源の心房頻拍

Junya Komatsu¹, Hiroki Sugane¹, Yuki Nishimura¹

¹Department of Cardiology, Chikamori Hospital, Kochi, Japan.

JACC. Case reports

|February 6, 2026

要旨

Background:

Pulsed-field ablation (PFA) may be an emerging treatment for left atrial appendage (LAA)-origin atrial tachycardia (AT), but it may cause thrombus in the LAA. Concomitant transcatheter LAA occlusion (LAAO) may address this risk.

Case Summary:

A 54-year-old man with symptomatic LAA-origin AT underwent PFA. Post-PFA transesophageal echocardiography showed significant pectinate muscle edema with narrowing of the LAA orifice. To avoid late peridevice leak, a 40-mm Watchman FLX Pro (Boston Scientific) was implanted with intentional overcompression. At the 1-month follow-up, cardiac computed tomography demonstrated a complete LAA seal with adequate device compression.

Discussion:

Concomitant PFA and LAAO is feasible for LAA-origin AT. Because PFA can induce significant edema within the LAA, device selection based on pre-PFA imaging is critical to ensure durable sealing.

Take-Home Messages:

Careful pre-PFA imaging-based device sizing is critical when combining PFA with LAAO in patients with LAA-origin AT.

キーワード:

電気的左心耳隔離術術中電気的イメージング左心耳閉鎖術血栓塞栓症経食道心エコー検査

さらに関連する動画

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation

Published on: February 28, 2012

Cooling or Warming the Esophagus to Reduce Esophageal Injury During Left Atrial Ablation in the Treatment of Atrial Fibrillation

Cooling or Warming the Esophagus to Reduce Esophageal Injury During Left Atrial Ablation in the Treatment of Atrial Fibrillation

Published on: March 15, 2020

関連する概念動画

Surface Appendages of Archaea

Surface Appendages of Archaea

Archaeal surface appendages are highly specialized structures essential for environmental adaptation, encompassing roles in adhesion, biofilm formation, and motility. Among these appendages, pili and archaella stand out for their distinct morphologies and functionalities, enabling archaea to thrive in diverse and often extreme environments.Pili: Adhesion and Biofilm FormationPili are filamentous structures assembled from pilin protein subunits, primarily contributing to adhesion and biofilm...

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...

Cardiac Catheterization III: Left Heart Catheterization

Cardiac Catheterization III: Left Heart Catheterization

Left heart catheterization is an invasive diagnostic procedure used to evaluate the function and structure of the left side of the heart. It is generally performed to diagnose and treat cardiovascular conditions such as valve abnormalities, coronary artery disease, and congenital heart defects.Diagnostic and therapeutic purposesLeft heart catheterization serves various diagnostic and therapeutic purposes, including:Assessing coronary artery bypass grafts.Evaluating coronary artery disease in...

Pulse

Pulse

When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical...

Pulse

Pulse

The pulse is one of the most fundamental physiological indicators of the body's cardiovascular health. It is the rhythmic expansion and contraction of the arterial walls in response to the pressure generated by the heart's pumping action.
Pulse Rate and its Significance
Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls...

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.