Results 131 to 140 of about 4,472 (167)
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Entropy in description of vasovagal syndrome
2015 Computing in Cardiology Conference (CinC), 2015In this paper we present an example of application of Approximate Entropy and Sample Entropy in analysis of vasovagal syndrome. In our research we conducted an analysis based on three types of data: RRI (RR intervals), SBP (systolic blood pressure) and TPR (total peripheral resistance), which were measured simultaneously with the head up tilt table ...
A Piątkowska
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Heart Rate Variability in Patients with Vasovagal Syndrome
PACE - Pacing and Clinical Electrophysiology, 1992The aim of this study was to assess the heart rate variability in patients with vasovagal syndrome (WS). Heart rate variability was expressed as: (1) the standard deviation (SD) of the mean RR interval; and (2) the SD as a percentage of the mean RR interval (%SD). Heart rate variability was measured in VVS patients and compared with control individuals.
George N Theodorakis +2 more
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The Management of Vasovagal Syncope in a Patient with Brugada Syndrome
Cardiac Electrophysiology Clinics, 2012Vasovagal syncope is the most common cause of the neurally mediated reflex syncopes. A higher susceptibility to vasovagal syncope has been reported in patients with Brugada syndrome (BrS) and may be caused by associated autonomic dysfunction. It is unclear what risk vasovagal syncope confers to patients with BrS.
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Reproducibility of the Adenosine-5'-Triphosphate Test in Vasovagal Syndrome
Journal of Cardiovascular Electrophysiology, 1998Vasovagal Syndrome: ATP Test Reproducibility. Introduction: Adenosine‐5′‐triphosphate (ATP) provokes negative chronotropic and dromotropic vagal effects. In vasovagal syndrome, ATP test (20‐mg IV bolus infusion) represents a promising technique for identifying patients at risk of severe cardioinhibitory response of vagal origin.
Daniel Flammang, Mark Erickson
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The incidence of malignant vasovagal syndrome in patients with recurrent syncope
European Heart Journal, 1991We reviewed 322 patients with recurrent syncope between 1984 and 1988. Investigation included limited intracardiac electrophysiological study in all cases with programmed extra-stimulus studies in 48 cases. In 93 patients (29%), all investigations were normal, (including negative extrastimulus in 30).
A Fitzpatrick +2 more
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Update on the Role of Pacemaker Therapy in Vasovagal Syncope and Carotid Sinus Syndrome
Progress in Cardiovascular Diseases, 2013Vasovagal syncope (VVS) and carotid sinus syndrome (CSS) are related, neurally mediated disorders with different clinical features and treatment implications. Pacemaker intervention studies in both syndromes are hampered by a dearth of randomized, controlled (particularly with placebo) studies, unfortunate premature termination of studies, and ...
Steve W, Parry, Iain G, Matthews
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PACE - Pacing and Clinical Electrophysiology, 1994
Eleven subjects (mean age 50 years, range 33–71 years), who had previously received permanent dual chamber pacemakers for cardioinhibitory vasovagal syncope, underwent paired Westminster protocol tilt tests, one with short AV delay VDD pacing and one without pacing, to test the hypothesis that continuous ventricular pacing would prevent the cardiac ...
Mark E V Petersen
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Eleven subjects (mean age 50 years, range 33–71 years), who had previously received permanent dual chamber pacemakers for cardioinhibitory vasovagal syncope, underwent paired Westminster protocol tilt tests, one with short AV delay VDD pacing and one without pacing, to test the hypothesis that continuous ventricular pacing would prevent the cardiac ...
Mark E V Petersen
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Risk of Vasovagal Syndrome During Outpatient Hysteroscopy
The Journal of the American Association of Gynecologic Laparoscopists, 2004To evaluate influence of hysteroscope type and media used during outpatient hysteroscopy on vasovagal syndrome risk.Prospective observational study (Canadian Task Force classification II-1).University hospital.Two thousand seventy-nine women undergoing outpatient hysteroscopy without analgesia.Office hysteroscopy with a flexible or rigid hysteroscope ...
Aubert, Agostini +5 more
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