Double mitral and aortic mechanical valves present an access challenge when planning a ventricular tachycardia (VT) ablation. In this case report, we describe a patient who was considered for stereotactic ablative radiotherapy but was unable to proceed due to unfavorable anatomy making them at high risk of fistula formation. The patient went on to have an endocardial VT ablation via mini-thoracotomy and transapical access without complication. This case highlights the need for careful consideration when planning treatment for patients with double mechanical valves.
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http://dx.doi.org/10.1111/jce.15623 | DOI Listing |
Circ Res
January 2025
Division of Cardiology, Department of Medicine, Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, PA. (R.A.C., C.C.C., R.W., A.C., C.B., C.R., W.J.M., M.J. Bashline, A.P., A.M.P., P.B., M.J. Brown, C.S.H.).
Background: Calcific aortic valve disease is the pathological remodeling of valve leaflets. The initial steps in valve leaflet osteogenic reprogramming are not fully understood. As TERT (telomerase reverse transcriptase) overexpression primes mesenchymal stem cells to differentiate into osteoblasts, we investigated whether TERT contributes to the osteogenic reprogramming of valve interstitial cells.
View Article and Find Full Text PDFJ Vis Exp
January 2025
Department of Bioengineering, Imperial College London; The Francis Crick Institute;
Mechanical forces continuously provide feedback to heart valve morphogenetic programs. In zebrafish, cardiac valve development relies on heart contraction and physical stimuli generated by the beating heart. Intracardiac hemodynamics, driven by blood flow, emerge as fundamental information shaping the development of the embryonic heart.
View Article and Find Full Text PDFBiomech Model Mechanobiol
January 2025
Laboratoire d'Imagerie Biomédicale (LIB), Institut National de La Recherche Médicale (INSERM), Centre National de La Recherche Scientifique (CNRS), Sorbonne Université, Paris, France.
Atrial fibrillation (AF) is characterized by rapid and irregular contraction of the left atrium (LA). Impacting LA haemodynamics, this increases the risk of thrombi development and stroke. Flow conditions preceding stroke in these patients are not well defined, partly due the limited resolution of 4D flow magnetic resonance imaging (MRI).
View Article and Find Full Text PDFJ Cardiothorac Surg
January 2025
Cardiovascular Research Center, Health Policy and Promotion Institute, Imam-Ali Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Background: The lacking proper regulation of International Normalized Ratio (INR) as the main problem in patients with mechanical valve replacement surgery poses the risk of thrombosis and embolism on the one hand and the risk of bleeding on the other. For this reason, the correct monitoring of INR via the Time in Therapeutic Range (TTR) is needed. The present study aimed to explore the blood coagulation monitoring of patients with mechanical heart valve in Imam Ali Hospital of Kermanshah in 2021.
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