Results 241 to 250 of about 8,470,821 (285)

Relevance of asystole during head-up tilt testing

The American Journal of Cardiology, 1995
The prognosis of patients manifesting prolonged asystole during head-up tilt testing is unclear. In 209 consecutive patients with a history of syncope and positive head-up tilt tests, 19 had asystole lasting > 5 seconds (mean duration 15 +/- 10) (group 1a).
DHALA A, NATALE A, SRA J, DESHPANDE S, BLANCK Z, JAZAYERI MR, AKHTAR M   +6 more
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Ventilatory Response to Passive Head Up Tilt

1998
Humans have several adaptive mechanisms to deal with the effect of gravity during upright postures. The effect of passive upright tilt (HUT) on respiration has been shown to reduce the end tidal partial pressure of carbon dioxide (PETCO2) and increase the end tidal partial pressure of oxygen (PETO2) (1,4,5,9,15–19).
J M, Serrador, R L, Bondar, R L, Hughson
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Tilt angles and positive response of head-up tilt test in children with orthostatic intolerance

Cardiology in the Young, 2013
AbstractThis study aimed at examining three tilt angle-based positive responses and the time to positive response in a head-up tilt test for children with orthostatic intolerance, and the psychological fear experienced at the three angles during head-up tilt test.
Jing, Lin, Yuli, Wang, Todd, Ochs, Chaoshu, Tang, Junbao, Du, Hongfang, Jin   +5 more
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Differences in the dynamic cerebrovascular response between stepwise up tilt and down tilt in humans

American Journal of Physiology-Heart and Circulatory Physiology, 2001
We studied dynamic cerebrovascular responses in eight healthy humans during repetitive stepwise upward tilt (SUT) and stepwise downward tilt (SDT) maneuvers between supine and 70° standing at intervals of 60 s. Mean cerebral blood flow velocity (FVMCA) was measured at the middle cerebral artery (MCA) with transcranial Doppler ultrasonography.
J, Sato, M, Tachibana, T, Numata, T, Nishino, A, Konno   +4 more
openaire   +2 more sources

Prolonged asystole provoked by head-up tilt testing

Clinical Research in Cardiology, 2006
We describe a patient with a history of neurocardiogenic syncopes who had a positive headup tilt test that resulted in an lasting asystole lasting 34 seconds. However, the previously carried out Schellong test with a 30-min phase of standing showed a normal result. The patient showed typical orthostatic symptoms while tilted at the angle of 75 degrees.
R, Winker, M, Frühwirth, P, Saul, H W, Rüdiger, T, Pezawas, H, Schmidinger, M, Moser   +6 more
openaire   +2 more sources

TILT-UP: EFFICIENT CONCRETE CONSTRUCTION

Revista Gestão e Conhecimento
The Tilt-Up construction system has established itself as one of the most efficient and predominant methodologies for industrial and commercial buildings in North America, being used in millions of square meters annually. This article examines the fundamental characteristics, historical development, and standardized execution process of tilt-up ...
Gerardo Arturo Hernández Talamantes, Alberto Domínguez Quintana, Adriana Prieto Galindo, Carlos Hugo Larrinúa Pacheco   +3 more
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Cluster Headache: Cardiovascular Responses to Head‐up Tilt

Headache: The Journal of Head and Face Pain, 1995
Head‐up tilt tests were performed in six cluster headache patients in a bout of attacks, but in a pain‐free interval at the time of investigation; and in eleven controls matched for age, basal blood pressure, and heart rate. A Doppler servomethod was used for a noninvasive, beat‐to‐beat blood pressure determination.
P, Kruszewski, C, Bordini, A O, Brubakk, O, Sjaastad   +3 more
openaire   +2 more sources

Tilt-up construction

2012
CIVINS
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[Head-up tilt test].

Journal of cardiology, 2000
Head-upright tilt table testing has been used as a research tool over the past 50 years by physiologists and/or physicians to study the hemodynamic and endocrine adaptation to changes in position. Tilt test has become a widely accepted tool in the clinical evaluation of patients with syncope, since its first application to patients with syncope by ...
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Tilt up concrete wall panels

2010
The design of tilt up concrete wall panels was studied in this paper. Design charts were developed to assist the engineer in the analysis of panels under load. Computer simulation of the concrete section was used to obtain the chart data. A computer study of the effect of a number of parameters on the load carrying capacity of wall panels was made ...
openaire   +1 more source