Extreme heart rhythm alteration during a head-up tilt test
نویسندگان
چکیده
منابع مشابه
Ventricular fibrillation a rare complication during head-up tilt test
the supine position for 10 minutes. The test consisted of 2 Introduction The head-up tilt test (HUTT) is a useful diagnostic tool for evaluating suspected neurocardiogenic syncope. Pharmacologic provocation with isoproterenol, adenosine, or nitroglycerin (NTG) is frequently used to facilitate the induction of syncope during HUTT. Studies have reported the occurrence of ventricular arrhythmias d...
متن کاملSeizure-Like Activities during Head-Up Tilt Test-Induced Syncope
PURPOSE Some patients with neurally mediated reflex syncope may be misdiagnosed as epilepsy because myoclonic jerky movements are observed during syncope. The seizure-like activities during the head-up tilt test (HUT) have been rarely reported. The purpose of this study was to assess the characteristics of these seizure-like activities and evaluate whether there are differences in the clinical ...
متن کاملHeart rate variability analysis during head-up tilt test predicts nitroglycerine-induced syncope
OBJECTIVE The aim of this study was to determine whether or not heart rate variability (HRV) analysis during the first 20 min of head-up tilt testing could predict whether patients will develop syncope after nitroglycerine administration. DESIGN 64 patients with previous loss of consciousness underwent head-up tilt testing with the Italian protocol, which involves the administration of nitrog...
متن کاملEndogenous Circadian Rhythm in Vasovagal Response to Head-Up Tilt
Background—The incidence of syncope exhibits a daily pattern with more occurrences in the morning, possibly as a result of influences from the endogenous circadian system and/or the daily pattern of behavioral/emotional stimuli. This study tested the hypothesis that the circadian system modulates cardiovascular responses to postural stress, leading to increased susceptibility to syncope at spec...
متن کاملLeg intravenous pressure during head-up tilt.
Leg vascular resistance is calculated as the arterial-venous pressure gradient divided by blood flow. During orthostatic challenges it is assumed that the hydrostatic pressure contributes equally to leg arterial, as well as to leg venous pressure. Because of venous valves, one may question whether, during orthostatic challenges, a continuous hydrostatic column is formed and if leg venous pressu...
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ژورنال
عنوان ژورنال: Hellenic Journal of Cardiology
سال: 2020
ISSN: 1109-9666
DOI: 10.1016/j.hjc.2019.11.003