نتایج جستجو برای: syncope etiology
تعداد نتایج: 59343 فیلتر نتایج به سال:
Syncope is an important health problem, constituting 1%-5% of all emergency service admissions and up to 6% of all hospitalizations. Substantial experience with patient history and physical examination and time are required to diagnose syncope in patients presenting with transient loss of consciousness. In addition, only up to 50% of patients with syncope can be diagnosed with a final diagnosis...
Thirty-five teenage patients with a history of presyncope or syncope underwent a passive head-up tilting to reproduce symptoms of syncope. If tilting alone did not induce syncope, isoproterenol infusion was given to increase heart rate to 150 to 160 beats per minute. In 80% of patients with a history of syncope, identical symptoms could be reproduced during tilting: an abrupt fall in blood pres...
OBJECTIVES The objectives of this study were to 1) define the incidence of syncope coming to medical attention among children and adolescents, 2) determine the outcome of syncope in these patients, and 3) determine changes over time in the evaluation and charges for evaluating this problem. BACKGROUND Syncope occurs commonly in children and adolescents. However, the mid- and long-term outcome...
INTRODUCTION Left atrial myxomas remain the most common benign primary cardiac tumors, and these cardiac growths can masquerade as mitral stenosis, infective endocarditis and collagen vascular disease. Atrial myxomas are found in approximately 14-20% of the population and can lead to embolization, intercardiac obstructions, conduction disturbances and lethal valve obstructions. CASE PRESENTAT...
Australia experienced a large influx of European migrants during the period 1950-1975. The descriptive epidemiolÃ3gica! data on cancer rates within the major migrant groups, reviewed here, provide strong evidence of environmental and behavioral influences on the etiology of various cancers. The opportunity to extend the conventional type of data analysis, to include an examination of the effect...
Syncope is a common clinical presentation. Although most commonly benign, it may herald a pathology with a poor prognosis. The work-up of syncope includes a careful history, physical examination, electrocardiogram, risk stratification, and appropriately directed testing. The key factor in the investigation of syncope is the presence (or absence) of structural heart disease or an abnormal electr...
In general, the initial “treatment” of all forms of neurally-mediated reflex syncope comprises reassurance as to the benign nature of the syndrome, education regarding avoidance of triggering events and predisposing factors, recognition of premonitory symptoms and manoeuvres to abort the episode, the avoidance of volume depletion and prolonged upright posture. The above measures are sufficient ...
Syncope is a sudden and transient loss of consciousness and postural tone, with spontaneous recovery without medical intervention. It accounts for 1.0% to 1.5% of emergency department (ED) visits and up to 6% of hospital admissions. Vasovagal syncope may be the cause of syncope in 21% to 40% of cases. A 53-year-old Chinese woman was brought to the ED by ambulance after a near-syncope episode wh...
Syncope is a sudden and transient loss of consciousness and postural tone, usually described as “fainting” or “passing out”. It is a common problem, accounting for 3% of emergency room visits. A history of an isolated episode of syncope will be found in as many as 25% of healthy young adults, especially in settings that precipitate fear, disgust or anxiety, and if not repeated does not warrant ...
AIMS We sought to determine the incidence, mechanisms, and time to syncope recurrence in patients with spontaneous syncopal monomorphic ventricular tachycardia (SyMVT) treated with an implantable cardiac defibrillator (ICD). METHODS AND RESULTS Incidence and causes of syncope following ICD implantation in consecutive patients (n=26) with spontaneous SyMVT were compared with those found in con...
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