BACKGROUND AND AIM OF THE STUDY The study was designed to investigate the clinical performance of the On-X prosthetic heart valve in a multicenter experience. METHODS Between September 1996 and September 1999, 301 patients (56% males) underwent isolated On-X valve replacement (184 isolated aortic (AVR), 117 isolated mitral (MVR)) at 11 European centers under a standardized protocol. Average a...

AVR processors are widely used in embedded devices. Hence, it is crucial for the security of such devices that cryptography on AVR processors is implemented securely. Timing-side-channel vulnerabilities and other possibilities for information leakage pose serious dangers to the security of cryptographic implementations. In this article, we propose a framework for verifying that AVR assembly pro...

High Level Languages (HLLs) are rapidly becoming the standard methodology for embedded microcontrollers due to improved time-to-market and simplified maintenance support. In order to ensure that the new ATMEL AVR family of microcontrollers was well suited as a target for C compiler, the external C compiler development was started before the AVR architecture and instruction set were completed. D...

Aortic valve replacement (AVR) is a common surgical intervention for symptomatic aortic stenosis. For many high-risk patients with severe symptomatic aortic stenosis, AVR is not an option. Aortic valve bypass (AVB), a less common surgical procedure compared to AVR surgery, can bypass a stenotic aortic valve in lieu of replacing it and can offer surgical intervention for candidates unable to und...

OBJECTIVES More elderly patients (>80 years of age) are being referred for aortic valve replacement (AVR) with or without CABG. Current risk stratification models may not accurately predict the preoperative risk in these patients. We sought to determine which perioperative variables were relevant in determining short-term (30-day to in-hospital) outcomes in our intuition's series of consecutive...

BACKGROUND The optimal management of low-gradient "severe" aortic stenosis (mean gradient <40 mm Hg, indexed aortic valve area ≤0.6 cm2/m2) with preserved left ventricular ejection fraction remains controversial because gradients may be similar after aortic valve replacement (AVR). We compared outcomes of low-gradient severe aortic stenosis with AVR or medical therapy. METHODS AND RESULTS Com...

BACKGROUND AND AIM OF THE STUDY Between January 1, 1997 and December 31, 2001, a total of 342 patients underwent aortic valve replacement (AVR) or mitral valve replacement (MVR) with the ATS Medical prosthesis. The initial three-year phase of this study took place under a United States Food and Drug Administration-approved investigational device exemption study. The study aim was to determine t...

Method Twenty patients with AS without aortic insufficiency underwent AVR using bioprostheses were recruited. Preand post-AVR cardiac function parameters and aortic valve parameters were collected by transthoracic echocardiography. To evaluate the influences of peripheral vascular resistance on transvalvular flow velocity, static distensibility parameters of the carotid artery, such as b stiffn...

Plant resistance proteins (R proteins) recognize corresponding pathogen avirulence (Avr) proteins either indirectly through detection of changes in their host protein targets or through direct R-Avr protein interaction. Although indirect recognition imposes selection against Avr effector function, pathogen effector molecules recognized through direct interaction may overcome resistance through ...