Results 51 to 60 of about 575,934 (253)
Syncope associated with supraventricular tachycardia: Diagnostic role of implantable loop recorders
Annals of Noninvasive Electrocardiology, 2021 Syncope represents a relatively uncommon symptom of supraventricular tachycardia (SVT). It is likely that an impaired autonomic vasomotor response to the hemodynamic stress of tachycardia is the determinant of hemodynamic changes leading to cerebral ...
Stergios Soulaidopoulos +13 more
doaj +1 more source
Folding a 2-D powder diffraction image into a 1-D scan: a new procedure
, 2006 A new procedure aiming at folding a powder diffraction 2-D into a 1-D scan is presented. The technique consists of three steps: tracking the beam centre by means of a Simulated Annealing (SA) of the diffraction rings along the same axis, detector tilt ...
Cervellino, Antonio +3 more
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Cooccurrence of Postural Orthostatic Tachycardia Syndrome with Two Different Clinical Entities
Case Reports in Pediatrics, 2016 Postural orthostatic tachycardia syndrome (POTS) is an abnormal heart rate response to a positional change. Several potential mechanisms for pathophysiology of POTS are defined. This syndrome can coexist with different clinical situations. In our report,
Funda Oztunc +4 more
doaj +1 more source
A computational assessment of the aerodynamic performance of a tilted Darrieus wind turbine [PDF]
, 2015 The aerodynamic performance of a Darrieus wind turbine operating with the rotation axis tilted with respect to the free-stream wind speed is investigated in this paper. An Unsteady Reynolds Averaged Navier Stokes (URANS) Computational Fluid Dynamics (CFD)
Bedon, Gabriele +2 more
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Advanced Biomedical Research, 2016 Background: Syncope is an important and common clinical condition, and the neurally mediated syncope is the most frequent type of syncope. Tilt testing is considered as a first-line diagnostic test.
Bahar Dehghan, Mohammad Reza Sabri
doaj +1 more source
Spectral analysis of heart rate variability for assessment of autonomic nervous system activity during head-up tilt table testing [PDF]
, 2014 Spectral analysis of heart rate variability was used to assess changes in activity of autonomic nervous system (ANS) in 84 patients with history of recurrent syncope and 21 normal controls.
et al., Likar, Polona
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Test of the isotropy of the speed of light using a continuously rotating optical resonator
, 2005 We report on a test of Lorentz invariance performed by comparing the resonance frequencies of one stationary optical resonator and one continuously rotating on a precision air bearing turntable.
A. A. Michelson +6 more
core +1 more source
The Scientific World Journal, 2012 The study aim was to assess sympathetic vasomotor response (SVR) by using pulsed wave Doppler (PWD) ultrasound in patients with multiple system atrophy (MSA) and correlate with the tilt table study.
Ke-Vin Chang +6 more
doaj +1 more source
Frontiers in NeurosciencePurposeIn 177 patients with ischemic heart disease and elevated periosteal pain sensitivity of the chest bone indicative of autonomic nervous system dysfunction, we test the hypotheses, (i) there is an association between the tilt table responses for the
Nanna Ørsted +6 more
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Tilt-table testing: down but not out [PDF]
Clinical Practice, 2014 Clin. Pract. (2014) 11(3), 265–268 ISSN 2044-9038 part of Syncope is very common, with the overall incidence for first syncope being 6.2 per 1000 patient years, increasing to 20 in females aged over 80 years [1]. Vasovagal syncope (VVS) is by far the most common cause, explaining over 20% of cases, with an underlying cardiac cause in 10% of cases and ...
James Frith, Steve W Parry
openaire +1 more source