… Tilt in Patients with Syncope of Unknown Origin. Fast Fourier analysis (FFT) of heart rate
may be used to characterize overall heart rate variability (HRV) as well as low (LF: 0.06-0.10 Hz…

… This study assesses the vasovagal collapse pattern changes, ie, heart rate (HR) and arterial
… Heart rate and BP patterns were classified according to the Vasovagal International Study …

… Paroxysmal tachycardiac palpitations, which are linked to supraventricular or ventricular
tachycardia, begin and end suddenly; the heart rate is generally high and the patient’s …

… heart disease and ninety-three with what we will describe briefly as "tachycardias of unknown
origin." … alcohol was the cause of the rapid heart rate in another small group. A surprisingly …

[Estimation of autonomic nervous system tension in patients with syncope of unknown origin--traps
in clinical interpretation results of heart rate variability]. - Abstract - Europe PMC Sign …

… heart rate recordings were made. Blood pressure was measured by cuff sphygmomanometry
and heart rate … or until the blood pressure and heart rate stabilized. This was followed by a …

… Recently, attention has focused on the heart rate (HR) and blood … patients with syncope of
unknown origin and to assess whether … autonomic system evaluated by heart rate variability. …

… of heart rate and to an automatic or handmanned blood pressure monitor. Heart rate and …
Ten subjects without evidence of organic heart disease and without syncope served as our …

Most clinicians must have been faced with cases of heart disease, especially among young
individuals, in which all attempts at a satisfactory etiological diagnosis have been vain. Many …

… Blood pressure and heart rate variations during syncope … in heart rate than younger patients.
Our data indicate that increasing age determines a different blood pressure and heart rate …