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Feasibility of Atrial Substrate Mapping During Atrial Pacing and Its Impact on the Omnipolar Voltage and the Peak-Frequency of Electrograms.
J Cardiovasc Electrophysiol
December 2024
Department of Cardiovascular Medicine, Tokyo Medical and Dental University, Tokyo, Japan.
Introduction: Atrial pacing maps are often used as substitutes for sinus rhythm (SR) maps to expedite mapping procedures. However, the impact of this method on electrophysiological parameters has not been systematically examined. This study aimed to elucidate the advantages and limitations of atrial pacing maps.
View Article and Find Full Text PDFSafety and Feasibility of Pulsed Field Ablation in Patients With Mechanical Prosthetic Valves.
JACC Clin Electrophysiol
November 2024
Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium.
Article Synopsis
- Pulsed field ablation (PFA) is a new technique for heart tissue treatment that targets heart cells directly without damaging nearby tissues, but using it with mechanical heart valves can be tricky due to potential interference.* -
- This study involved 30 patients with mechanical heart valves undergoing PFA for atrial fibrillation, and it found no major complications, with normal valve function post-procedure.* -
- While PFA seems safe for patients with mechanical valves, careful management of the catheter is crucial to prevent electromagnetic interference that could affect the treatment.*
Computational haemodynamics for pulmonary valve replacement by means of a reduced fluid-structure interaction model.
Int J Numer Method Biomed Eng
September 2024
LaBS, Dipartimento di Chimica, Materiali e Ingegneria Chimica, Politecnico di Milano, Milan, Italy.
Pulmonary valve replacement (PVR) consists of substituting a patient's original valve with a prosthetic one, primarily addressing pulmonary valve insufficiency, which is crucially relevant in Tetralogy of Fallot repairment. While extensive clinical and computational literature on aortic and mitral valve replacements is available, PVR's post-procedural haemodynamics in the pulmonary artery and the impact of prosthetic valve dynamics remain significantly understudied. Addressing this gap, we introduce a reduced Fluid-Structure Interaction (rFSI) model, applied for the first time to the pulmonary valve.
View Article and Find Full Text PDFArtificial Chordae Implantation vs Posterior Leaflet Preservation: A Comparison of Midterm Results After Mitral Valve Replacement.
Tex Heart Inst J
July 2024
Medicine Faculty, Department of Cardiovascular Surgery, Sakarya University, Sakarya, Turkey.
Background: Various techniques have been proposed for the preservation of the subvalvular apparatus (SVA) in mitral valve replacement. This study aimed to compare the midterm results of posterior leaflet preservation with the results of selective preservation of the SVA involving artificial chordae implantation in terms of left ventricular performance in patients undergoing mitral valve replacement.
Methods: In total, 127 patients were included in this study.
Complete dislodgement of a mechanical valve prosthesis: A rare but potentially life-threatening event: a case report.
Medicine (Baltimore)
June 2024
Department of Ultrasound, TEDA International Cardiovascular Hospital, Tianjin, China.
Article Synopsis
- A rare case of complete dislodgement of a mechanical mitral valve is reported in a 50-year-old woman who experienced sudden cardiogenic shock two decades after her valve replacement.
- Severe malfunction of the valve was diagnosed using echocardiograms, revealing significant issues including the prosthetic valve components floating in the left atrium.
- Following immediate intervention with a new bioprosthetic valve, the patient had a smooth recovery and was discharged in good health, highlighting the vital role of echocardiography in assessing prosthetic valve issues.
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