A 66-year-old woman received a pacemaker implantation because of syncope with documented sinus arrest and junctional bradycardia. Three weeks later the analysis revealed episodes nonsustained ventricular tachycardia. Coronary angiography invasive coronary assessment showed diffuse moderate stenosis but no significant ischemia. months she experienced new runs tachycardia at time syncope. The com...

BACKGROUND Prolonged corrected QT interval (QTc) holds independent prognostic importance in predicting mortality in patients with coronary artery disease, diabetes mellitus and congestive heart failure. However, its association with all cause or cardiac mortality in the general population remains unclear. We evaluated the relationship between prolonged QTc and total mortality among patients wit...

BACKGROUND The interplay of resting muscle sympathetic nerve activity (MSA) and the baroreceptor reflex in patients with vasovagal syncope remains elusive. Hence, the aim of the present study was to investigate MSA, baroreceptor sensitivity, heart rate, and blood pressure under resting conditions and during orthostatic stress in patients with a history of vasovagal syncope. METHODS AND RESULT...

Falls in older adults are often the result of syncope, commonly defined as “a transient loss of consciousness.” Identifying the cause of syncope can be quite difficult, especially since syncoperelated falls in older adults are often not witnessed. A systemic approach can help distinguish between neuroautonomic and cardiac syncope, identify syndromes with syncopelike symptoms, and prevent fallre...

INTRODUCTION In some patients with recurrent syncope, the etiology may remain unclear despite extensive evaluation. These patients may sometimes be labeled as having a "psychogenic" cause for their syncope. METHODS We report on three patients with recurrent unexplained syncope (despite extensive evaluation) who were labeled as having a psychogenic cause for their events. In each patient follo...

Syncope due to idiopathic AV block is characterized by: 1) ECG documentation (usually by means of prolonged ECG monitoring) of paroxysmal complete AV block with one or multiple consecutive pauses, without P-P cycle lengthening or PR interval prolongation, not triggered by atrial or ventricular premature beats nor by rate variations; 2) long history of recurrent syncope without prodromes; 3) abs...

Syncope is a sudden transient loss of consciousness and postural tone with spontaneous recovery. Loss of consciousness results from a reduction of blood flow to the reticular activating system located in the brain stem. Syncope is an important clinical problem which accounts for 1% of hospital admissions and 3% of emergency department visits with a reported mortality and major morbidity rate of...

Background—Women with congenital long-QT syndrome experience an increased risk for cardiac events after the onset of adolescence that is more pronounced among carriers of the LQT2 genotype. We hypothesized that the hormonal changes associated with menopause may affect clinical risk in this population. Methods and Results—We used a repeated-events analysis to evaluate the risk for recurrent sync...

This report describes a new etiology of pediatric syncope. Epilepsy, brain anomalies, infection, electrolyte abnormalities, and trauma are commonly identified etiologies of seizures in the pediatric population. We report here a child with third-degree heart block and right ventricular outflow tract obstruction related to an intracardiac tumor presenting with syncope and seizure-like activity. E...