the epidemiology of atrial fibrillation

... to these guidelines The problem of early recognition of AF is greatly aggravated by the often ‘silent’ nature of the rhythm disturbance In about one-third of patients with this arrhythmia, the ... aware of so-called ‘asymptomatic AF’ Much earlier detection of the arrhythmia might allow the timely introduction of therapies to protect the patient, not only from the consequences of the arrhythmia, ... prevent stroke The LAA is considered the main site of atrial thrombogenesis Thus, occlusion of the LAA orifice may reduce the development of atrial thrombi and stroke in patients with AF Of note, incomplete...

Ngày tải lên: 08/03/2014, 14:20

... both the atrial septum and atrial wall remain warmer than the wall of the left ventricle [4,21,22] Therefore, the protection of the atrial wall remains relatively inadequate compared to that of the ... AF is the result of the dispersion of atrial refractoriness resulting in multiple reentry wavelets in the atria [8] In the postsurgical state of the heart several parameters may alter the refractoriness ... ischemia of the atrial wall and septum while the anterior ones are indirectly implicated through the development of acute atrial enlargement This last hypothesis is supported by the results of Knotzer...

Ngày tải lên: 10/08/2014, 09:22

... without the need of large thermal gradients and without jeopardizing adjacent structures (Figure 1) [6] The purpose of this study was to evaluate the efficacy of left atrial HIFU ablation of AF ... as the strongest predictor of the procedure's failure or success, respectively At a cut-off point of 50 mm failure rate dramatically worsened with an odd ratio of 4.2 The consequences of left atrial ... via the medical history, which is of limited reliability because of the common occurrence of asymptomatic AF The size of the transducer system, i.e the number of transducer elements, was not predictive...

Ngày tải lên: 10/08/2014, 09:22

... variation To the best of our knowledge a throughout evaluation of the Index has never been performed in Norway The necessity of 39 chapters and the content of the chapters should be evaluated The large ... “Breathing difficulties” was the most used Indexcategory in the “all other” group with nearly 5% of the total Approximately half of all patients in the youngest age group had “all other” medical problems ... site accounted for 11% of the patients The table also shows that in 26% of the situations, the casualty clinics were directly involved in patient care, either as final place of treatment or by examination...

Ngày tải lên: 25/10/2012, 09:56

... the value that deviated the furthest from the median of the reference range was taken Where there was no difference between the minimum and maximum value from the median, the maximum value was ... of the city of Calgary and surrounding areas (population 1.2 million) in the province of Alberta, Canada [14] All critically ill adult patients in the CHR are managed in ICUs under the care of ... hypernatraemia All of these observations raise the question of whether sodium disturbances are a physiological disturbance that independently increases the risk of death, a marker of illness severity...

Ngày tải lên: 25/10/2012, 10:31

... nares and also the mucous membranes of the throat." Then they mixed all the "stuff" together and sprayed cc of the mixture in each of the nostrils of 10 volunteers, and "into the throat, while ... diagnosis of influenza." Rosenau made every attempt to get donors who were early in their illness, "A few of the donors were in the first day of the disease Others were in the second or third day of the ... mucosal epithelial surfaces by creating a hostile antimicrobial shield The epithelia secrete them constitutively into the thin layer of fluid that lies above the apical surface of the epithelium...

Ngày tải lên: 20/06/2014, 01:20

... extended to the left of the right auricle toward the left atrium posteriorly There was a cmlength foramen ovale type atrial septal defect The residual foramen ovale was cut at the middle then the incision ... bipolar radiofrequency and cryothermy We made a lesion set of ablation of atrial fibrillation which was different from that of Gillinov’s technique Our technique consists of a combination of pulmonary ... Preoperatively, the present patient had chronic atrial fibrillation, and the other two had paroxysmal atrial fibrillation and mitral regurgitation without atrial septal defect They maintained...

Ngày tải lên: 10/08/2014, 09:22

... materials We then present the prevalence of individual policy items and the results of a factor analysis that explored the underlying dimensions of the policy variables Finally, we analyze the relationships ... during the first year of recovery [47,48], this circumstance exists in part because of their age and the prevalence of drug and alcohol abuse among their peers Students need to be aware of the potential ... assimilated the unique handbook and Web variables into a single set of "recompiled" variables, reflecting the total number of policies attributable to either the handbook or the Web To compare the "added...

Ngày tải lên: 11/08/2014, 20:20

... estimate of the "natural" 25(OH)D levels present when the human genome evolved We repeat our aside hypothesis that the patients in UVC irradiated hospitals may have been the beneficiaries of more ... evidence that significant amounts of UVC penetrate through the stratum corneum, stratum lucidum, stratum granulosum, and small amounts of UVC even reach the upper layers of the 7DHC-rich stratum spinosum ... Vitamin D are made on the surface of human skin [10] They collected surface oils from young men, irradiated the oils, and showed those oils rapidly cured rachitic rats Then, they tested a very practical...

Ngày tải lên: 12/08/2014, 04:22

... knowledge of ARF epidemiology It highlights the crucial role of additional organ failures in the setting of ARF The data suggest that rather low mortality rates can be expected when the patient ... studies far beyond the time of discharge from the ICU Many examples can be found in the published literature of studies that suggest that the risk for dying in the aftermath of ICU treatment for ... to the observed high mortality rates in patients with ARF [7,17–19] The role of the severity of ARF itself is under discussion It may depend on the indicator used to assess this severity The...

Ngày tải lên: 12/08/2014, 19:22

... Guidelines for the Management of Patients With Atrial Fibrillation) ; North American Society of Pacing and Electrophysiology: ACC/AHA/ESC guidelines for the management of patients with atrial fibrillation: ... 6-min walk test) but increased number of hospitalizations There was no difference in quality of life between the groups In the Strategies of Treatment in Atrial Fibrillation (STAF) trial [15], 200 ... U; STAF Investigators: Randomized trial of rate-control versus rhythm-control in persistent atrial fibrillation: the Strategies of Treatment of Atrial Fibrillation (STAF) study J Am Coll Cardiol...

Ngày tải lên: 12/08/2014, 20:20

... present an analysis of the changes in the epidemiology of severe sepsis presenting within 24 hours of admission to critical care in England, Wales and Northern Ireland The data cover the nine-year ... have explored trends in the epidemiology of severe sepsis over a significant time period [19,21] Both of these were hospital-based studies from the USA, with the diagnosis of severe sepsis based ... longitudinal understanding of the underlying epidemiology of severe sepsis in the population It is important to know not only baseline data, such as the incidence of severe sepsis and associated...

Ngày tải lên: 12/08/2014, 23:22

... history as the development of a condition in the absence of treatment, and defines clinical course as its development in the presence of treatment Studies of the 'natural history' of LBP are ... However, the mean scores for the variables measured were around 50% at the beginning of the study and did not improve over the study period by more than 15% These data encourage the hypothesis ... conclusions about the effects of interventions for LBP [58] There are a number of exhaustive reviews of the efficacy of interventions in recent-onset LBP [19,33,34,42,59] There are also a number of national...

Ngày tải lên: 13/08/2014, 13:22

... regarding the prevalence and treatment of atrial fibrillation in medical intensive care unit patients What is the pathophysiology of atrial fibrillation in medical intensive care unit patients? Does atrial ... literature, however, presenting the criteria of evidence-based medicine Even the questions of whether AF is the cause of mortality or just an epiphenomenon [3] and of whether treatment improves outcome ... patients because of the polypharmacy and because of the difficulty to distinguish between adverse effects, underlying disease and other nosocomial complications Can treatment of atrial fibrillation...

Ngày tải lên: 25/10/2012, 10:35

... pothesis have attempted to include these theories [5-8] The theory of Greaves and that of Kinlen have been discussed in one of the chapters in this book One of the limitations of the theory of ... the peak age of onset of ALL reflects the degree of susceptibility with which a child is born and, on the other hand, the degree of proliferation of the cells involved in the development of the ... factor, the effect of said exposure will vary according to the stage of development of the in‐ dividual or of the particular organ [47-52] Some of the factors that can influence the toxicity of a...

Ngày tải lên: 17/03/2014, 12:20

... in the developed countries, whereas in some of these countries it occurs in the 20-30% of the adult population Arterial hypertension is highly prevalent in the Epidemiology of hypertension in the ... Based on the Hellenic Society for the Study of Hypertension guidelines (2008) the aim of the screening of blood pressure in the hypertensive subjects under 65 years old is to maintain the blood ... hyperlipidaemia, smoking, lack of physical activity, psychological factors, age and sex 20-23 Each of these factors in the presence of high blood pressure can further increase the risk of cardiovascular diseases...

Ngày tải lên: 28/03/2014, 19:21

... In view of the critical role of the NP ⁄ GC-A system in the moderation of blood pressure and volume [1–6], the identification of the specific mechanisms involved in the downregulation of GC-A activity ... .QPSS487LERHLRSAGS497RLT500LS502GRGS506NYGS510LLT513TE Fig Scheme illustrating the domains of GC-A and the positions of the phosphorylated amino acids (in bold) The numbers within the sequence depict the positions of these amino acids within mature ... role for the phosphorylation of this residue in the inhibitory regulation of GC-A activity To follow this hypothesis, we tested the influence of the substitution of Ser487 with glutamate on the process...

Ngày tải lên: 29/03/2014, 09:20

... scientific input in the design of the study and in the writing of the manuscript 15 16 17 NE: took part in all parts of the design and development of the AF6 and in the writing of the manuscript 18 ... methodology, the analysis of the results and in the writing of the manuscript 11 12 13 14 JC: made statistical analyses and gave scientific input in the analysis of the results and in the writing of the ... development of the AF6 and in the writing of the manuscript BN: participated in the data analysis, in the preparation of tables and writing of the manuscript KK: gave scientific input regarding the statistical...

Ngày tải lên: 18/06/2014, 18:20

... (ELISA) Proceedings of the Session of the Research Group of the Standing Technical Commitee of the European Commission for the Control of Foot-and-Mouth Disease, Lelystad, Netherlands, 20–22 Sept ... taken by carefully holding the animal with the mouth slightly open and than moving the swab up and down on the surface of the tongue four to five times The tip of the swabs was than stored in ... them from other areas of Pakistan, this result represent more the FMD situation of whole Pakistan than the particular situation in LDC, thus the time point of infection can have been before the...

Ngày tải lên: 20/06/2014, 01:20