In part I of this study, we found that the classical studies on vasovagal syncope, conducted in
fit young subjects, overstated vasodilatation as the dominant hypotensive mechanism. Since …

The carotid sinus syndrome and carotid sinus hypersensitivity (CSH) are closely related
disorders. The first is characterized by syncope triggered by manipulation of the carotid …

The simple faint is secondary to hypotension and bradycardia resulting in transient loss of
consciousness. According to Ohm's law applied to the circulation, BP= SVR× CO …

Importance Patients with chest pain represent a high health care burden, but it may be
possible to identify a patient group with a low short-term risk of adverse cardiac events who …

Study objective A 2-hour accelerated diagnostic pathway based on the Thrombolysis in
Myocardial Infarction score, ECG, and troponin measures (ADAPT-ADP) increased early …

The time course of cardiac sympathetic nerve activity (CSNA) following acute myocardial
infarction (MI) is unknown. We therefore undertook serial direct recordings of CSNA, arterial …

Background Syncope is a sudden transient loss of consciousness and postural tone caused
by cerebral hypoperfusion. The most common form is vasovagal syncope (VVS) …

FIGURE 1. The hemodynamic responses to 60 head-up tilt (mean blood pressure, heart rate,
and left atrial index) in the normal group (open bars, n Å 9) and the syncopal group (slashed …

The importance of cardiac output (CO) to blood pressure level during vasovagal syncope is
unknown. We measured thermodilution CO, mean blood pressure (MBP), and leg muscle …

In the pathophysiological study of vasovagal syncope, the nature of the interaction between
baroreceptor sensitivity (BS), sympathetic withdrawal, and parasympathetic activity has yet …