syncope/脳卒中

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

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,

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