نتایج جستجو برای: میکروکنترلر avr
تعداد نتایج: 2584 فیلتر نتایج به سال:
Introduction Among the 12 leads studied in electrocardiography (ECG), lead aVR can be considered as the most forgotten part of it since no attention is paid to it as the mirror image of other leads. Therefore, the present study has been designed with the aim of evaluating the prevalence of ST segment changes in lead aVR and its relationship with the outcome of these patients. Methods In this ...
BACKGROUND Characteristics and prognosis of hemodialysis patients with severe aortic stenosis have not yet been well defined. METHODS AND RESULTS The CURRENT AS (contemporary outcomes after surgery and medical treatment in patients with severe aortic stenosis) registry, a Japanese multicenter registry, enrolled 3815 consecutive patients with severe aortic stenosis. There were 405 hemodialysis...
BACKGROUND Low mean transvalvular gradient (<40 mm Hg) and small aortic valve area (<1.0 cm(2)) in patients with aortic stenosis (AS) and preserved left ventricular ejection fraction raises uncertainty about the actual severity of the stenosis and survival benefit of aortic valve replacement (AVR). OBJECTIVES This study analyzed studies of mortality and survival impact of AVR in patients with...
BACKGROUND Increased extravascular compression and reduced diastolic perfusion time (DPT), rather than vascular remodeling, influence coronary microcirculatory dysfunction in aortic stenosis (AS). However, alterations after aortic valve replacement (AVR) remain unclear. The aim of the present study was to quantify changes in transmural perfusion and coronary vasodilator reserve (CVR), a measure...
BACKGROUND Transcatheter aortic valve replacement (TAVR) has been suggested as a less invasive treatment for high-risk patients with aortic valve disease. In this study, we compared the outcomes of conventional surgical aortic valve replacement (AVR) and TAVR in elderly patients aged over 80. METHODS A total of 108 patients aged 80 years or older who underwent isolated AVR (n=35) or TAVR (n=7...
OBJECTIVES To compare early and long-term outcomes of minimally invasive surgery (MIS) versus full sternotomy (FS) isolated aortic valve replacement (AVR). METHODS We retrospectively analysed all patients who underwent isolated bioprosthetic AVR between 2003 and March 2012 at our institution. Matching was performed based on a propensity score, which was obtained using the output of a logistic...
IMPORTANCE There is a need to describe contemporary outcomes of surgical aortic valve replacement (AVR) as the population ages and transcatheter options emerge. OBJECTIVE To assess procedure rates and outcomes of surgical AVR over time. DESIGN, SETTING, AND PARTICIPANTS A serial cross-sectional cohort study of 82,755,924 Medicare fee-for-service beneficiaries undergoing AVR in the United St...
Results 712 (male 77.5%) patients were operated on, with 609 (85.54%) being isolated CABG and 103 (14.46%) combined CABG with AVR. Average age in isolated CABG and combined groups were 66 and 73 years respectively. Average additive EuroScores were 3.5 and 7.29. 21.6% cases were performed by trainee or staff grade surgeon. In hospital mortality was 0.16% in isolated CABG and 0% in CABG with AVR ...
no significant effect of age, sex, or race on the mean initial R-wave amplitude in lead aVR or its distribution, or on the upper 98% normal limit of the initial R wave, a decrease of the mean R amplitude in aVR with clockwise rotation of the transitional zone, and a highly significant correlation of R amplitude in aVR to that of R in V1, Q3, and Q in aVF, but too low for reliable prediction. Ri...
Introduction Welcome to Atmel Applications Journal Volume 6. I would like to thank all of you for your dedication to the AVR microcontroller family. 2005 has been another great year for us and the AVR product family has enjoyed high double-digit growth, both in revenue and units shipped. Design wins continue to go from strength to strength and we are all very excited about our prospects for 200...
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