نتایج جستجو برای: tilt test
تعداد نتایج: 823253 فیلتر نتایج به سال:
Synchronization between 0.1 Hz oscillations in heart rate and blood pressure is studied and its change during vertical tilt is evaluated in 37 myocardial infarction patients. Two groups of patients are identified with decreased and increased, respectively, synchronization of the studied oscillations as a response to a tilt test. It is shown that assessment of synchronization of 0.1 Hz oscillati...
Bird depredation of agricultural crops is a worldwide problem. New strategies to include chemical repellents are needed to mitigate crop losses. We evaluated 3 preplant seed treatments (Apron XLt LS [Syngenta Crop Protection, Greensboro, NC], Dividend Extremet [Syngenta], and Maximt 4 FS [Syngenta]), one foliar insecticide (Karatet with Zeon Technologye [Syngenta]), and one foliar fungicide (Ti...
Head-tilt maneuver assists with achieving airway patency during resuscitation. However, the relationship between angle of head-tilt and airway patency has not been defined. Our objective was to define an optimal head-tilt position for airway patency in neonates (age: 0-28 days) and young infants (age: 29 days-4 months). We performed a retrospective study of head and neck magnetic resonance imag...
INTRODUCTION Patients with superior oblique muscle palsy often assume a compensatory head tilt to the contralateral side of the affected eye. This tilt serves to decrease the hypertropia and, in theory, might decrease the excyclotropia. METHODS A prospective investigation was undertaken of the effect of forced head tilt to the right and left on torsion and the hypertropia in patients with uni...
AIM To assess the cerebral blood flow velocity during the first minute of head-up tilt in patients with postural tachycardia syndrome (POTS) or neurally-mediated reflex syncope compared with patients with dizziness. METHODS We evaluated 120 patients selected from 470 patients who underwent head-up tilt testing: 40 with POTS, 40 with typical neurally-mediated reflex syncope and 40 who complain...
OBJECTIVES The purpose of our study was to determine whether the serotonin reuptake inhibitor sertraline hydrochloride could prevent neurocardiogenic syncope in children and adolescents resistant to or intolerant of other therapies. BACKGROUND The serotonin reuptake inhibitor fluoxetine hydrochloride has been reported to be effective in preventing neurocardiogenic syncope in adults. METHODS...
High frequency cavity beam position monitors (BPMs) can also provide information on the xz or yz correlation of the beam (yaw or pitch, respectively). Such a diagnostic is particularly desirable in the Next Linear Collider (NLC) main linacs, where the principal sources of emittance dilution generate such a correlation. Test results from the extremely low emittance beam at the KEK Accelerator Te...
While briefly reviewing how the concepts of strictly pericondensed, strain-free, Clar's aromatic sextet, and symmetry are interconnected in the topological correspondence between strictly pericondensed and total resonant sextet (TRS) benzenoid hydrocarbons, new structural correlations in isomer numbers, symmetry distributions, and empty rings between various strain-free TRS benzenoids made up o...
Vasovagal syncope (VVS) has been diagnosed with increasing frequency in older patients since the head-up tilt-table test (HUT) was described over 2 decades ago. The incidence and prevalence of VVS in this age group remains unknown. Older individuals are more likely to display a dysautonomic hemodynamic pattern with a predominantly hypotensive response during HUT. The positivity rates to passive...
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