OBJECTIVES To analyze the incidence and causes of ICD therapies in children and young adults and verify their impact on the quality of life (QoL). METHODS From March/1977 to February/2006, 29 patients (15.7+/-5.4 years old) were submitted to ICD implants. Aborted cardiac arrest (41.5%), sustained ventricular tachycardia (27.6%) and primary prophylaxis of sudden cardiac death (30.9%) indicated...

We study thermal crack shielding and thermal shock damage in a double-edge cracked metal-particlereinforced ceramic matrix composite subjected to sudden cooling at the cracked surfaces. Under severe thermal shocks, the crack will grow but will be bridged by the plastically stretched metal particles. A linear softening bridging law is used to describe the metal particle bridging behavior. An int...

The discrimination of Ventricular Tachycardia (VT) from Supra-Ventricular Tachycardia (SVT) remains a major challenge for appropriate therapy delivery in Implantable Cardioverter Defibrillators (ICDs). Unlike SVT, VT is a life-threatening arrhythmia that may lead to sudden death unless an appropriate shock is delivered. The discrimination in ICDs is performed from endocardial measurements of th...

Patients with left ventricular assist devices (LVADs) are at high risk of sustained ventricular arrhythmias, but these may be remarkably well tolerated and the association with sudden death is unclear. Many patients who receive an LVAD already have an implantable cardioverter defibrillator (ICD). While it is standard practice to reactivate a previously implanted ICD in an LVAD recipient, this s...

Numerical modeling of open channel ̄ows with shocks using explicit ®nite di€erence schemes is constrained by the choice of time step, which is limited by the CFL stability criteria. To overcome this limitation, in this work we introduce the application of a multiple grid algorithm to the ®eld of computational hydraulics. By coupling this algorithm to a second-order accurate MacCormack scheme, w...

The subcutaneous implantable cardioverter-defibrillator (ICD) is becoming more widespread. Approved by the Food and Drug Administration for use in the United Stated in 2012, the subcutaneous ICD is now being implanted for primary and secondary prevention of sudden cardiac death among individuals meeting conventional ICD implantation criteria but who do not have an indication for cardiac resynch...

659 Implantable cardioverter-defibrillators (ICDs) reduce sudden cardiac death risk and improve survival in patients with a history of life-threatening arrhythmia or cardiac arrest (secondary prevention) and in high-risk patients without such a history (primary prevention). Patients with ICDs, however, may receive unnecessary shocks, which have been associated with proarrhythmia, anxiety, depre...

Implantable cardioverter defibrillator (ICD) is considered to be the main therapy for prevention of sudden cardiac death in patients with Brugada syndrome (BrS). However, there have been several reports suggesting a higher prevalence of complications, such as inappropriate shocks, lead failure, and device infection compared with the incidence of lethal ventricular arrhythmia. BrS is mainly diag...

[1] The complex interplanetary structures during 7 to 8 Nov 2004 are analyzed to identify their properties as well as resultant geomagnetic effects and the solar origins. Three fast forward shocks, three directional discontinuities and two reverse waves were detected and analyzed in detail. The three fast forward shocks ‘‘pump’’ up the interplanetary magnetic field from a value of 4 nT to 44 nT...

1576 Implantable cardioverter defibrillators (ICDs) save lives in patients at risk for sudden death attributable to ventricular arrhythmias, pacemakers (PMs) have been improving symptoms in patients with bradyarrhythmias for decades, and, more recently, cardiac resynchronization devices have improved mortality, morbidity, and quality of life for patients with heart failure. However, these devic...