BACKGROUND- Traditional management of severe aortic stenosis (AS) is based on delay in aortic valve replacement (AVR) until the development of symptoms. Surgery for asymptomatic AS has been proposed to reduce the small risk of sudden death before AVR and avoid heart failure (HF) after AVR. Because a trial to compare these options is unlikely, we developed a Markov model to inform the choice bet...

BACKGROUND From October 1977 to October 2002, 4,480 patients (age range, 17 to 94 years; average, 64 +/- 13 years) underwent single valve replacement with the St. Jude Medical heart valve. Of 2,982 aortic (AVR) and 1,498 mitral valve replacements (MVR), concomitant coronary artery bypass grafting was performed on 42% and 33%, respectively. METHODS Cardiac Surgical Associates has maintained an...

BACKGROUND Exercise-induced ST-segment elevation (STE) in lead aVR may be an important indicator of prognostically important coronary artery disease (CAD). However, the prevalence and associated clinical features of exercise-induced STE in lead aVR among consecutive patients referred for exercise stress electrocardiography (ExECG) is unknown. METHODS All consecutive patients receiving a Bruce...

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...