Substitution of a defective heart valve with a prosthetic heart valve turns the native disease for prosthesis-related complications. One of the most serious and dreaded complications is prosthetic valve obstruction. It is either the result of a thrombus or pannus formation. For the evaluation of prosthetic valve obstruction, transthoracic echography and fluoroscopy provide functional information but may not provide information about the etiology of the obstruction, unlike multidetector computed tomography (MDCT) which allows a more precise etiological diagnosis to guide the therapeutic attitude. Here, we report a case of a mechanical prosthetic mitral valve obstruction in a 45-year-old patient in whom the diagnosis of pannus was retained on the basis of clinical, biological, and imaging data. The differentiation between thrombus and pannus is crucial because it conditions the therapeutic attitude. Advanced imaging specially MDCT options should be considered whenever mechanical prosthesis valve obstruction is suspected.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10245095 | PMC |
http://dx.doi.org/10.1016/j.radcr.2023.05.016 | DOI Listing |
Comput Biol Med
January 2025
UCL Mechanical Engineering, University College London, UK; Ri.MED Foundation, Palermo, Italy; University of Palermo, Department of Engineering, Palermo, Italy. Electronic address:
Aortic valve replacements, both surgical and transcatheter, are nowadays widely employed treatments. Although clinically effective, these procedures are correlated with potentially severe clinical complications which can be associated with the non-physiological haemodynamics that they establish. In this work, the fluid dynamics changes produced by surgical and transcatheter aortic valve replacements are analysed and compared with an ideal healthy native valve configuration, employing advanced fluid-structure interaction (FSI) simulations.
View Article and Find Full Text PDFAnn Thorac Surg Short Rep
December 2024
Department of Cardiac Surgery, San Raffaele University Hospital, Milano, Italy.
Purpose: To report the outcomes of the early feasibility study of transapical transcatheter mitral valve replacement (TMVR) with the SATURN System (InnovHeart, Milano, Italy) to treat patients with severe functional mitral regurgitation.
Description: Five high surgical risk patients underwent transapical transcatheter mitral valve replacement with the SATURN System at a single center. One-year follow-up is complete for all patients.
Ann Thorac Surg Short Rep
December 2024
Department of Cardiovascular Surgery, Tokyo Women's Medical University, Tokyo, Japan.
In the valve-in-valve transcatheter aortic valve replacement (ViV-TAVR) era, implanting a larger-sized valve during the initial aortic valve replacement is important. For smaller aortic annuli, combining aortic annular and left ventricular outflow tract (LVOT) enlargement is essential. The Y-incision procedure helps achieve implantation of a 2-size larger valve.
View Article and Find Full Text PDFCardiovasc Diagn Ther
December 2024
Department of Cardiology, St. Luke's International Hospital, Tokyo, Japan.
Tetralogy of Fallot (TOF) is a condition that often leads to long-term enlargement of the aortic root in after surgery. The aortic dilation is believed to be caused by histological abnormalities of the aortic media and the hemodynamic characteristics of increased aortic flow, compared to pulmonary flow. Severe cyanosis, severe right ventricular outflow tract (RVOT) obstruction, older age at repair, a larger aortic size at the time of repair, and a history of an aortopulmonary shunt parameters related to long-standing volume overload of the aortic root were the reported risk factors.
View Article and Find Full Text PDFRespir Med Case Rep
December 2024
Section of Pulmonary, Critical Care and Sleep Medicine Carilion Clinic, Virginia Tech School of Medicine, USA.
Chronic obstructive lung disease is the third leading cause of death worldwide. It affects the airways and lung parenchyma leading to emphysema. Bronchoscopic lung volume reduction is another strategy that aims to reduce air trapping and hyperinflation, leading to improvement in symptoms and pulmonary function.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!