Results 51 to 60 of about 1,633 (249)

Impact of daily artificial gravity on autonomic cardiovascular control following 60-day head-down tilt bed rest

Frontiers in Cardiovascular Medicine, 2023
Impaired cardiovascular autonomic control following space flight or immobilization may limit the ability to cope with additional hemodynamic stimuli. Head-down tilt bedrest is an established terrestrial analog for space flight and offers the opportunity ...
J.-N. Hoenemann, J.-N. Hoenemann, S. Moestl, A. Diedrich, E. Mulder, T. Frett, G. Petrat, W. Pustowalow, M. Arz, M.-T. Schmitz, K. Heusser, S. M. C. Lee, J. Jordan, J. Jordan, J. Tank, F. Hoffmann, F. Hoffmann   +16 more
doaj   +1 more source

Long‐Term Efficacy of Immunotherapy in Autoimmune Autonomic Ganglionopathy—A 10‐Year Follow Up Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Autoimmune autonomic ganglionopathy (AAG) is a rare but potentially treatable cause of severe autonomic failure. Evidence guiding long‐term immunotherapy, treatment sequencing, and residual autonomic impairment is limited. We evaluated long‐term treatment response, residual autonomic dysfunction, and relapse patterns in patients with
Giacomo Chiaro, Shiwen Koay, Gordon T. Ingle, Patricia McNamara, Laura Watson, Fion Bremner, Valeria Iodice   +6 more
wiley   +1 more source

Distinctive Steady-State Heart Rate and Blood Pressure Responses to Passive Robotic Leg Exercise and Functional Electrical Stimulation During Head-up Tilt

Frontiers in Physiology, 2016
Tilt tables enable early mobilization of patients by providing verticalization. But there is a high risk of orthostatic hypotension provoked by verticalization, especially after neurological diseases such as spinal cord injury. Robot-assisted tilt tables
Amirehsan Sarabadani Tafreshi, Amirehsan Sarabadani Tafreshi, Robert Riener, Robert Riener, Verena Klamroth-Marganska, Verena Klamroth-Marganska   +5 more
doaj   +1 more source

Effects of Head‐Up Tilt‐Table Test on the QT Interval [PDF]

Annals of Noninvasive Electrocardiology, 2010
Background. The QT interval shortens in response to sympathetic stimulation and its response to epinephrine infusion (in healthy individuals and patients with long QT syndrome) has been thoroughly studied. Head‐up tilt‐table (HUT) testing is an easy way to achieve brisk sympathetic stimulation.
Michael, Findler, Amir, Birger, Shmuel, Diamant, Sami, Viskin   +3 more
openaire   +2 more sources

Processamento de sinais fisiológicos para investigação de síncope reflexa [PDF]

, 2011
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2011A síncope é definida como perda súbita e transitória da consciência devido a uma hipoperfusão cerebral ...
Baggio, João Fernando Refosco
core  

Heart rate variability analysis during head-up tilt test predicts nitroglycerine-induced syncope [PDF]

, 2014
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.
Brisinda, Donatella, Venuti, Angela, Fenici, Riccardo   +2 more
core   +1 more source

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright, Scotty G. McKay, Jean Ramos Bou, Fen Bao, Vivian B. Truong, Chenyang Li, Li Jiang, Anza B. Memon, E. Mark Haacke, Yulin Ge, Yongsheng Chen   +10 more
wiley   +1 more source

Prueba de inclinación (“Head-up Tilt Test”), lecciones aprendidas en 564 casos consecutivos: Lessons Learned from 564 Consecutive Cases Head-Up Tilt Test

Acta Médica Costarricense, 2012
Introducción. El síncope es un motivo frecuente de consulta; el mecanismo causal más común es el reflejo, que incluye el síncope neurocardiogénico (SN), la hipotensión ortostática, la hipersensibilidad del seno carotídeo, entre otros.
Oswaldo Gutiérrez-Sotelo, Yorleny Alfaro-Badilla   +1 more
doaj  

The impact of gravity during head-up tilt

, 2011
The impact of gravity during head-up tilt, a test often used in the clinic to diagnose patients who suffer from dizziness or frequent episodes of syncope, is not well described. This study uses mathematical modeling to analyze experimental blood pressure
Ottesen, Johnny T., B. Smith, Smith, Brittany, J. Mehlsen, J. Ottesen, Mehlsen, Jesper, Olufsen, Mette, M. S. Olufsen   +7 more
core   +1 more source

Upper Cervical Cord Area as a Biomarker of Conversion to Secondary Progressive Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective This study assessed whether upper cervical cord area (UCCA) measured on routine brain MRI can serve as a biomarker of conversion to SPMS. Methods This is a single‐center retrospective cohort study of RRMS patients with cross‐sectional and longitudinal analyses of clinical and MRI data. Future SPMS converters were matched by age, sex,
Nabil K. El Ayoubi, Sola Al Ghazal, Salem Hannoun, Medhat A. Siddik, Nour M. Najjar, Jim Dagher, Joseph Abboud, Myriam G. Semaan, Samia J. Khoury   +8 more
wiley   +1 more source