Results 31 to 40 of about 156,828 (341)

Transfemoral transcatheter valve-in-valve-in-valve replacement [PDF]

The Journal of Thoracic and Cardiovascular Surgery, 2016
From the Divisions of Cardiovascular Surgery and Cardiovascular Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pa. Disclosures: Authors have nothing to disclose with regard to commercial support. Received for publication Dec 16, 2015; revisions received Feb 11, 2016; accepted for publicationMarch 14, 2016; available ...
Prashanth Vallabhajosyula, Stephane Leung Wai Sang, Jay Giri   +2 more
openaire   +2 more sources

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Tricuspid Stenosis in Pregnancy

JACC: Case Reports, 2020
Redo tricuspid valve replacement has high surgical operative mortality. Transcatheter valve-in-valve provides a viable option for valve replacement. We discuss the decision-making process involved in performing transcatheter tricuspid valve-in-valve ...
Oluwayemisi L. Adejumo, MD, Irbaz Hameed, MD, Tracy Grossman, MD, Inna Landres, MD, Christopher Tam, MD, Jonathan Villena-Vargas, MD, Shanna Sykes Hill, MD, Dmitriy N. Feldman, MD, Robert M. Minutello, Luke Kim, Geoffrey Bergman, MD, Shing-Chiu Wong, MD, Arash Salemi, MD, Harsimran S. Singh, MD, MSc   +13 more
doaj  

Contemporary Outcomes in Low‐Gradient Aortic Stenosis Patients Who Underwent Dobutamine Stress Echocardiography

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2019
Background Detection of flow reserve (FR) by dobutamine stress echocardiography is used for risk stratification in low‐gradient aortic stenosis (AS).
Kimi Sato, Kesavan Sankaramangalam, Krishna Kandregula, Jennifer A. Bullen, Samir R. Kapadia, Amar Krishnaswamy, Stephanie Mick, L. Leonardo Rodriguez, Richard A. Grimm, Venu Menon, Milind Y. Desai, Lars G. Svensson, Brian P. Griffin, Zoran B. Popović   +13 more
doaj   +1 more source

Transcatheter Mitral Valve Replacement in Patients With Previous Aortic Valve Replacement [PDF]

Circulation: Cardiovascular Interventions, 2018
Background: Transcatheter mitral valve replacement (TMVR) may mature to become a therapeutic option for high-risk patients with severe mitral regurgitation (MR), particularly in patients at high or prohibitive surgical risk. MR patients with preexisting aortic valve prosthesis have been excluded from most TMVR trials because of
Cheung, Anson, Webb, John, Schaefer, Ulrich, Moss, Robert, Deuschl, Florian G, Conradi, Lenard, Denti, Paolo, Latib, Azeem, Kiaii, Bob, Bagur, Rodrigo, Ferrari, Enrico, Moccetti, Marco, Biasco, Luigi, Blanke, Philippe, Ben-Gal, Yanai, Banai, Shmuel   +15 more
openaire   +4 more sources

Scalable Manufacturing of Radiation‐Tolerant Potentiometric Electrodes: A Systematic Transition from Laboratory to Semiautomated Fabrication

Advanced Engineering Materials, EarlyView.
Laboratory protocols for producing thin‐film pH electrodes for sterilized single‐use technologies have been successfully developed into a semiautomated workflow, with higher throughput and precision of membrane thickness. Accuracies are within 0.05 pH units versus ground truth, and uncertainty analysis reveals the largest sources of error to be derived
Bingyuan Zhao, Aiganym Yermembetova, Benson Kunhung Tsai, Jialong Huang, Alexander Wei   +4 more
wiley   +1 more source

Left ventricular diastolic function in valvular aortic stenosis after aortic valve replacement [PDF]

Srpski Arhiv za Celokupno Lekarstvo, 2002
In adults with significant sympthomatic aortic valve stenosis, aortic valve replacement is therapy of choice. Replacement of the diseased aortic valve with a prosthetic valve yields relief of left ventricular outflow obstruction.
Ristić-Anđelkov Anđelka
doaj   +1 more source

Development of Aluminum Scandium Alloys for Hydrogen Storage Valves

Advanced Engineering Materials, EarlyView.
Different aluminum alloy series and various aluminum‐scandium alloys with differing Sc and Zr levels are evaluated for use in hydrogen storage valve production. The alloys undergo hardness testing, optical microscopy, and tensile strength analysis, with hardening behavior studied under varying conditions.
Francisco García‐Moreno, Tillmann Robert Neu, Markus Eberl, Paul Hans Kamm, Hans‐Wolfgang Seeliger   +4 more
wiley   +1 more source

Tricuspid valve replacement provides better long-term survival and tricuspid valve function than repair in patients with systemic right ventricleCentral MessagePerspective

JTCVS Open, 2023
Objective: The purpose of this study is to compare the long-term outcomes of 2 different tricuspid surgeries including valvuloplasty and replacement for significant tricuspid regurgitation in patients with systemic right ventricle.
Akihisa Furuta, MD, PhD, Takeshi Shinkawa, MD, PhD, Satoshi Okugi, MD, Hisashi Yoshida, MD, Hiroshi Niinami, MD, PhD   +4 more
doaj  

Angular momentum transfer torques in spin valves with perpendicular magnetization [PDF]

, 2011
Spin valves incorporating perpendicularly magnetized materials are promising structures for memory elements and high-frequency generators. We report the angular dependence of the spin-transfer torque in spin valves with perpendicular equilibrium magnetization computed by first-principles circuit theory and compare results with experiments by W.H ...
arxiv   +1 more source