Orthostatic Decrease in Cardiac Chaos During the Head-up Tilt Test in Patients With Vasovagal Syncope
نویسندگان
چکیده
منابع مشابه
Provocation of neurocardiogenic syncope by clomipramine administration during the head-up tilt test in vasovagal syndrome.
OBJECTIVES We sought to test the hypothesis that activation of the serotonergic system in patients with vasovagal syndrome during the head-up tilt test provokes syncope. BACKGROUND Central serotonergic activation participates in the pathogenesis of neurocardiogenic syncope. Drugs increasing serotonin (5-HT) in the central nervous system have not been tested as drug challenges during the head-...
متن کامل[Head-up tilt test in vasovagal syncope: for which purposes? for whom?].
30 Vasovagal syncope is a disorder that has been known for years since its clinical characteristics were masterfully described by Sir Thomas Lewis at the beginning of the 20th century.1 Traditionally, the criteria used to establish the diagnosis of a vasovagal origin in patients with syncopal episodes was based only on the presence of triggering circumstances and typical prodromic symptoms. In ...
متن کاملCerebral autoregulatory responses to head-up tilt in normal subjects and patients with recurrent vasovagal syncope.
BACKGROUND The effect of orthostatic stress on dynamic cerebral autoregulation (CA) in normal subjects and patients with recurrent vasovagal syncope (VVS) is unclear. This study assessed the dynamic CA responses of both groups to head-up tilt. METHODS AND RESULTS Seventeen patients with recurrent VVS and 17 pair-matched control subjects underwent 70 degrees head-up tilt for up to 30 minutes. ...
متن کاملHead - up Tilt Test in Vasovagal Syncope : For which Purposes ? For whom ?
30 Vasovagal syncope is a disorder that has been known for years since its clinical characteristics were masterfully described by Sir Thomas Lewis at the beginning of the 20th century.1 Traditionally, the criteria used to establish the diagnosis of a vasovagal origin in patients with syncopal episodes was based only on the presence of triggering circumstances and typical prodromic symptoms. In ...
متن کاملage and the head-up tilt test outcome in syncope patients
conclusions hemodynamic response to the hutt was associated with age. cardioinhibitory response became less frequent with age due to exaggerated vagal activity in the younger patients as compared with the older subjects. background the head-up tilt test (hutt) is a useful diagnostic tool for syncope. objectives we sought to investigate the outcome of the hutt in syncope patients and identify th...
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ژورنال
عنوان ژورنال: Circulation Journal
سال: 2006
ISSN: 1346-9843,1347-4820
DOI: 10.1253/circj.70.902