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Cardiac arrhythmias are an important cause of neurologic symptoms. Bradyarrhythmias and tachyarrhythmias, by disrupting blood flow to the brain and causing cerebral hypoxia, can lead to loss of consciousness (and ultimately to cerebral necrosis or death). Thus cardiac arrhythmias must be considered
OBJECTIVE
To investigate whether a marked decrease in postprandial systolic blood pressure correlates with a higher incidence of falls, syncope, new coronary events, new stroke, and total mortality at long-term follow-up in older nursing home residents.
METHODS
In a prospective study of 499 nursing
Head-up tilt table experiments conducted in astronauts prior to and immediately after the NASA Neurolab Space Mission (STS-90) revealed that a reduction in stroke volume induced by moving from the supine to upright posture was associated with increased muscle sympathetic nerve activity (MSNA).
Contrast-enhanced echocardiography or cardiac magnetic resonance imaging is of value in the diagnosis of apical hypertrophic cardiomyopathy. Apical hypertrophic cardiomyopathy is rare in Caucasians, and gene negativity does not rule out the diagnosis. Risk stratification for sudden cardiac death and
Closure of persistent foramen ovale (PFO) to avoid cryptogenic strokes is performed globally with enthusiasm but lacks prove of efficacy. We present a 79-year-old man who had had a PFO device introduced nine years previously because of cryptogenic strokes presenting as syncopes. The patient was
The risks and subsequent outcomes of syncope among seniors with chronic kidney disease (CKD) are unclear.We conducted a population-based retrospective cohort study of 272,146 patients ≥ 66 years old, in Ontario, Canada, from April 1, 2006, to March 31, Although head CT is often routinely performed in emergency department (ED) patients with syncope, few studies have assessed its value.
OBJECTIVE
To determine the yield of routine head CT in ED patients with syncope and analyse the factors associated with a positive CT.
METHODS
Prospective,
Syncope is a common phenomenon in the general population. Although most of the causes are of benign origin, some comorbidities are accompanied by high mortality. We aimed to compare the in-hospital mortality of patients with syncope related to different comorbities and investigate the OBJECTIVE
We studied the incidence and hemodynamic characteristics of near-fainting under orthostatic stress in healthy children and teenagers.
BACKGROUND
Orthostatic stress testing is increasingly used to identify young subjects with unexplained syncope. However, the associated incidence of syncope