نتایج جستجو برای: variable stiffness device vsd
تعداد نتایج: 957602 فیلتر نتایج به سال:
OBJECTIVES This study aimed to assess the safety and feasibility of intraoperative device closure of perimembranous ventricular septal defects (VSD) in young children guided by transthoracic echocardiography (TTE). METHODS We enrolled 18 patients from our hospital to participate in the study from June 2011 to September 2011. A minimal inferior median incision was performed after full evaluati...
We report measurements of disordered graphene probed by both a high electric field and a high magnetic field. By applying a high source-drain voltage, Vsd, we are able to study the current-voltage relation I-Vsd of our device. With increasing Vsd, a crossover from the linear I-Vsd regime to the non-linear one, and eventually to activationless-hopping transport occurs. In the activationless-hopp...
This paper presents a novel semi-active Variable Stiffness and Damping Isolator (VSDI) for vibration mitigation of structures. The proposed VSDI system consists of a traditional steel-rubber vibration absorber, as the passive fail-safe element, and a magneto-rheological elastomer (MRE) with a controllable (or variable) stiffness and damping behavior, as the passive-active element. MRE is a type...
OBJECTIVE To demonstrate the safety and efficacy of intraoperative apical ventricular septal defect (VSD) closure using a modified Rashkind double umbrella. DESIGN Descriptive study of all patients in whom intraoperative device closure of apical VSDs was attempted. SETTING A tertiary referral centre. PATIENTS Four patients with an apical VSD requiring closure, during the period January 19...
AIMS Immediate surgical repair of ventricular septal defect (VSD) complicating acute myocardial infarction is associated with high mortality. Percutaneous device closure appears to be safe and effective in patients treated for a residual shunt after initial surgical closure, as well as in patients with a chronic post-infarct VSD. Primary transcatheter VSD closure in the acute setting may also o...
Introduction: In this study, we sought to illustrate our experience in urgent surgical management for embolized cardiac septal occlude devices resulting from trans-catheter closure of atrial septal defect and ventricular septal defect. Mathrials and Methods: We retrospectively reviewed four patients aged 2–10 years who underwent urgent surgery due to cardiac septal occluder embolization between...
RATIONALE Surgical site infection (SSI) following spine surgeries involving internal fixation often require removing the instrument; however, this can cause spinal instability. Previous reports have demonstrated the usefulness of vacuum sealing drainage (VSD) therapy, but the cases require wound opening, aseptic condition to replace the VSD device, and a secondary operation to close the wound. ...
BACKGROUND We report our experience of using perventricular device closure (PVDC) in treating perimembranous ventricular septal defect (pm-VSD) with emphasis on technical and morphological considerations. METHOD Thirty-one pediatric patients with pm-VSD who underwent successful PVDC were enrolled in this study. The pm-VSDs were divided into three different types (type I: tunnel shape; type II...
Material and methods: Between December 2004 and December 2013, 300 patients with medical record of VSD were admitted to our study, previously admitted to the cath lab at our center for percutaneous treatment of their VSD with various types of devices. All patients were followed until December 2013, 1 to 109 months. VSD type treated: perimembranous (VSDpm) 93.85 % and muscular (VSDM) 6.14%. The ...
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