Syncope is an important symptom that though most commonly benign, deserves extensive evaluation since it can also be caused at times by life threatening causes that are potentially treatable. An important cause of syncope is symptomatic bradycardia either due to sick sinus syndrome or atrioventricular block that is treated easily by pacemaker therapy. However, the most common cause of syncope i...

A 59-year-old male patient was admitted with the main complaints of stuffiness and shortness of breath. An ECG from precordial leads on admission showed masquerading bundle branch block. Syncope frequently occurred after admission. During syncope episodes, ECG telemetry showed that the syncope was caused by intermittent complete atrioventricular block, with the longest RR interval lasting for 4...

BACKGROUND syncope is a common problem which increases in older age groups. In syncope clinics, patients who are depressed have higher rates of unexplained syncope and higher rates of recurrent syncope. OBJECTIVES : we aim to examine the rates of depression in older patients reporting syncope and the effect of anti-depressants (ADs) on the rates of syncope. DESIGN : epidemiological, point-p...

BACKGROUND This study was designed to determine the minimal mean flow velocity and pressure-flow relation necessary to preserve human consciousness. METHODS Passive upright tilt provocation was used in conjunction with transcranial Doppler in 80 patients with a history of syncope of unknown etiology. Cerebral blood flow velocity, blood pressure, and heart rate were monitored noninvasively. ...

SUZUKI, K. Clinical Features of Sustained Ventricular Tachycardia among Various Underlying Heart Diseases. Tohoku J. Exp. Med., 1990, 162 (1), 15-26 Clinical findings of 52 patients with sustained ventricular tachycardia (VT) were analyzed to assess the importance of the underlying etiology. Among patients with organic heart diseases, no differnces were found in the VT rate, the incidence of sy...

Idiopathic paroxysmal atrioventricular (AV) block poses a true diagnostic challenge. What is clear about this entity is the confusion about its definition and consequently about its etiology. According to certain sources, the diagnosis of this block requires the lack of a structural cardiac pathology that justifies the observed manifestations and an absence of electrocardiographic disorders pri...

OBJECTIVE Unexplained syncope is a challenge facing electrophysiologists. The prognosis varies widely depending on underlying causes, specially, cardiac ones. We sought to determine the abnormal electrophysiolgic (EP) study results as predictors of prognosis in syncope patients with suspected cardiac cause and risk factors associated with mortality. METHODS A total of 227 consecutive patients...

AIMS Our goal was to develop historical criteria for the diagnosis of vasovagal syncope. METHODS AND RESULTS We administered a 118-item historical questionnaire to 418 patients with syncope and no apparent structural heart disease. The prevalence of each item was compared between patients with positive tilt tests and those with syncope of other, known causes. The contributions of symptoms to ...

Syncope is a common medical problem, which accounts for 3.5% of emergency room visits. It includes diverse clinical etiologies, from cardiac origin with poor prognosis to reflex-mediated hypotension with benign clinical course. Trauma is not rare in patients with syncope, e.g. bruises or lacerations on the head and face were recognized in 17%. Accordingly, patients presenting with syncope may h...