Results 131 to 140 of about 139,278 (361)

Scaled Small-Gain Approach to Robust Control of LPV Systems with Uncertain Varying Delay [PDF]

arXiv, 2020
Linear parameter-varying (LPV) systems with uncertainty in time-varying delays are subject to performance degradation and instability. In this line, we investigate the stability of such systems invoking an input-output stability approach. By considering explicit bounds on the delay rate and time-varying delay uncertainty, the scaled small-gain theorem ...
arxiv  

Serious outcomes among emergency department patients with presyncope: A systematic review

Academic Emergency Medicine, EarlyView.
Abstract Background Syncope is transient loss of consciousness, and in presyncope, patients experience same prodromal symptoms without losing consciousness. While studies have extensively reported the risk of serious outcome among emergency department (ED) syncope, the outcome for patients with presyncope and their management are not well studied.
Hadi Mirfazaelian, Ian Stiell, Rasoul Masoomi, Khazar Garjani, Venkatesh Thiruganasambandamoorthy   +4 more
wiley   +1 more source

Distributed Stratified Locality Sensitive Hashing for Critical Event Prediction in the Cloud [PDF]

arXiv, 2017
The availability of massive healthcare data repositories calls for efficient tools for data-driven medicine. We introduce a distributed system for Stratified Locality Sensitive Hashing to perform fast similarity-based prediction on large medical waveform datasets.
arxiv  

Orthostatic hypotension and cardiovascular risk

Kardiologia Polska, 2019
Orthostatic hypotension (OH) is a cardinal sign of cardiovascular (CV) autonomic dysfunction as a result of autonomic nervous system failure to control the postural hemodynamic homeostasis. The proportion of individuals with OH increases with aging and chronic conditions, such as neurodegenerative diseases, hypertension, heart failure, diabetes, renal ...
Fabrizio Ricci, Artur Fedorowski, Artur Fedorowski, Richard Sutton, Richard Sutton   +4 more
openaire   +6 more sources

Characterization of the symptoms of neurogenic orthostatic hypotension and their impact from a survey of patients and caregivers

BMC Neurology, 2018
BackgroundNeurogenic orthostatic hypotension (nOH) results from impaired vasoconstriction due to dysfunction of the autonomic nervous system and is commonly associated with Parkinson disease (PD), multiple system atrophy (MSA), and pure autonomic failure.
D. Claassen, C. Adler, L. Hewitt, C. Gibbons   +3 more
semanticscholar   +1 more source

Human hypoxia models in aerospace medicine: Potential applications for human pharmacological research

British Journal of Clinical Pharmacology, EarlyView.
Aerospace medicine required controlled terrestrial models to investigate influences of altered atmosphere conditions, such as hypoxia, on human health and performance. These models could potentially be expanded to encompass disease conditions or treatment targets regulated through hypoxia or hypercapnia.
Titiaan E. Post, Cayla Denney, Adam Cohen, Jens Jordan, Ulrich Limper   +4 more
wiley   +1 more source

Atherosclerosis of the carotid bulb is associated with the severity of orthostatic hypotension in non-diabetic adult patients: a cross-sectional study

Clinical and Experimental Hypertension, 2019
Background: The carotid bulb has a high density of baroreceptors that play an important role in maintaining blood pressure. We hypothesized that atherosclerosis of the carotid bulb would reflect the severity of orthostatic hypotension more accurately ...
Yusuke Kobayashi, Hiroaki Ishiguro, Tetsuya Fujikawa, Hideo Kobayashi, Koichiro Sumida, Minako Kagimoto, Yuki Okuyama, Yosuke Ehara, Mari Katsumata, Megumi Fujita, Akira Fujiwara, Sanae Saka, Keisuke Yatsu, Nobuhito Hirawa, Yoshiyuki Toya, Gen Yasuda, Satoshi Umemura, Kouichi Tamura   +17 more
doaj   +1 more source

Heart Rate Variability during Periods of Low Blood Pressure as a Predictor of Short-Term Outcome in Preterms [PDF]

arXiv, 2018
Efficient management of low blood pressure (BP) in preterm neonates remains challenging with a considerable variability in clinical practice. The ability to assess preterm wellbeing during episodes of low BP will help to decide when and whether hypotension treatment should be initiated.
arxiv  

Decreased Noradrenaline (Norepinephrine) Synthesis in Neurogenic Orthostatic Hypotension [PDF]

, 1968
McC. Goodall, W. R. Harlan, Harold Alton
openalex   +1 more source

Orthostatic Hypotension in the Hypertensive Patient.

American Journal of Hypertension, 2018
Orthostatic hypotension (OH) is an important and common medical problem, particularly in the frail elderly with multiple comorbidities and polypharmacy. OH is an independent risk factor for falls and overall mortality.
I. Biaggioni
semanticscholar   +1 more source