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Infective endocarditis following transcatheter mitral valve-in-valve replacement: a clinical case report.
BMC Cardiovasc Disord
January 2025
Department of Medical Ultrasonics, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.
Background: Transcatheter valve-in-valve replacement (TMViVR) is an alternative option for patients with bioprosthetic valve failure (BVF) who are at high surgical risk. Although infective endocarditis (IE) after transcatheter mitral valve-in-valve replacement is unusual, it is associated with significantly high mortality.
Case Presentation: An 81-year-old male patient was admitted with intermittent thoracic tightness, chest pain persisting for 3 years, and shortness of breath with nausea for 1 week.
Leadless Pacemaker Implantation Following Lead Extraction in a Patient With Recent Percutaneous Tricuspid Valve Repair.
Pacing Clin Electrophysiol
January 2025
Second Division of Cardiology, Cardiac-Thoracic and Vascular Department, University Hospital of Pisa, Pisa, Italy.
This case details the successful implantation of a leadless pacemaker following the extraction of transvenous leads in a 72-year-old female patient with a complex cardiovascular history. The patient had undergone a series of cardiac interventions, including a recent percutaneous tricuspid valve repair with a metal clip implant due to severe regurgitation. After presenting with an infection at the pacemaker site, methicillin-resistant Staphylococcus hominis was identified, necessitating the removal of the entire pacing system.
View Article and Find Full Text PDFTransesophageal-echocardiography-guided one-stage TAVR + M-TEER credibly treated patients with severe double valve regurgitation: a case report.
AME Case Rep
November 2024
Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China.
Background: There are few reports about the one-stage surgery of transcatheter aortic valve replacement (TAVR) + mitral valve transcatheter edge-to-edge repair (M-TEER) around the world. TAVR + M-TEER surgery is usually performed under the simultaneous guidance of digital subtraction angiography (DSA) and echocardiography. There is no report of TAVR surgery assisted only by echocardiography all over the world.
View Article and Find Full Text PDFImpact of measurement location on direct mitral regurgitation quantification using 4D flow CMR.
J Cardiovasc Magn Reson
January 2025
Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA. Electronic address:
Background: Four-dimensional (4D) flow cardiovascular magnetic resonance (CMR) shows promise for quantifying mitral regurgitation (MR) by allowing for direct regurgitant volume (RVol) measurement using a plane precisely placed at the MR jet. However, the ideal location of a measurement plane remains unclear. This study aims to systematically examine how varying measurement locations affect RVol quantification and determine the optimal location using the momentum conservation principle of a free jet.
View Article and Find Full Text PDFComputational modeling of cardiac hemodynamics including chordae tendineae, papillaries, and valves dynamics.
Comput Biol Med
January 2025
LaBS, Dipartimento di Chimica, Materiali e Ingegneria Chimica "Giulio Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, Milan, 20133, Italy. Electronic address:
In the context of dynamic image-based computational fluid dynamics (DIB-CFD) modeling of cardiac system, the role of sub-valvular apparatus (chordae tendineae and papillary muscles) and the effects of different mitral valve (MV) opening/closure dynamics, have not been systemically determined. To provide a partial filling of this gap, in this study we performed DIB-CFD numerical experiments in the left ventricle, left atrium and aortic root, with the aim of highlighting the influence on the numerical results of two specific modeling scenarios: (i) the presence of the sub-valvular apparatus, consisting of chordae tendineae and papillary muscles; (ii) different MV dynamics models accounting for different use of leaflet reconstruction from imaging. This is performed for one healthy subject and one patient with mitral valve regurgitation.
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