Results 61 to 70 of about 8,255 (190)

The diagnostic performance of transcranial Doppler ultrasound and carotid duplex in the diagnosis of cerebral small vessel disease

The Egyptian Journal of Radiology and Nuclear Medicine
Background and rationale Cerebral small vessel disease is a frequent, long-term, and progressing vascular disease accounting for twenty percent of whole strokes and twenty-five percent of ischemic strokes.
Afaf Mohamed, Sara Gamal, Sama Ayman, Hatem El-Azizi   +3 more
doaj   +1 more source

Uncovering the impact of the cardiovascular system on cerebrovascular health using MRI

Experimental Physiology, EarlyView.
Abstract Human cerebrovasculature is finely tuned to enable local changes in blood flow to meet the brain's demands, whilst protecting the brain from systemic changes in blood pressure, both acutely during a heartbeat and chronically over time. This review summarises cerebrovascular structure and function, their role in disease and neurodegeneration ...
Ian D. Driver, Kevin Murphy
wiley   +1 more source

Individuals with persisting post‐concussion symptoms with physiological subtype demonstrate altered cardiovascular and autonomic responses to face cooling

Experimental Physiology, EarlyView.
Abstract Individuals with persisting post‐concussion symptoms with physiological subtype (PPCS‐P) demonstrate exercise intolerance due to exacerbation of concussion‐like symptoms during incremental exercise. We tested the hypothesis that individuals with PPCS‐P (n = 12) would have a blunted cardiac autonomic response to face cooling compared to healthy
Phillip J. Wallace, Steve Lidstone, Josh G. Nowlan, Johnathan Ljubanovich, Brandon J. McKinlay, Stephen A. Klassen, Stephen S. Cheung   +6 more
wiley   +1 more source

Optimizing cerebrovascular endothelial health through shear stress modulation

Experimental Physiology, EarlyView.
Abstract The endothelium plays a pivotal role in regulating cerebrovascular blood flow, and its dysfunction increases the risk of cerebrovascular disease. Endothelial shear stress, a primary mechanical stimulus for endothelial nitric oxide production, is a key modulator of vascular adaptation.
Erika Iwamoto, Rintaro Sakamoto, Darren P. Casey   +2 more
wiley   +1 more source

Prehospital ultrasound from a neurological point of view [PDF]

ABC: časopis urgentne medicine
The use of "Point-of-Care Ultrasound" (POCUS) has been shown to be useful in the prehospital conditions of various emergencies. The concept of this important method allows emergency medical service doctors to quickly respond to specific clinical ...
Lučić-Prokin Aleksandra, Ružička-Kaloci Svetlana, Živanović Željko, Popović Nemanja, Vlahović Dmitar   +4 more
doaj   +1 more source

The impact of red blood cell transfusion in preterm neonates on germinal matrix hemorrhage: incidence and grade with correlation to outcome

Egyptian Pediatric Association Gazette, 2023
Background Germinal matrix hemorrhage affects 20 to 25% of infants with a low birth weight (less than 1500 g). About one-tenth of them progress to intra-parenchymal hemorrhage, usually during the first days after birth.
Khaled Amin Nasef Ahmed, Dalia Ahmed Saied, Eman E. L. Sayed Mustafa Megahed, Sara Mahmoud Kamel, Mona Ahmed Kamel   +4 more
doaj   +1 more source

Time‐course analysis of cerebral circulation and cardiorespiratory responses to acute central blood volume reduction in healthy young males

Experimental Physiology, EarlyView.
Abstract Central blood volume (CBV) reduction challenges circulatory and respiratory homeostasis, particularly during the initial compensatory phase (0–2 min), when rapid physiological adaptations occur. In this study, we examined dynamic cardiorespiratory responses to CBV reduction using lower‐body negative pressure (LBNP) in 11 healthy young males ...
Marina Feeley, Tomoki Watada, Go Ito, Ai Shimada, Toru Sawai, Hideomi Nakata, Shingo Otsuki, Tadayoshi Miyamoto   +7 more
wiley   +1 more source

A Wearable Transcranial Doppler Ultrasound Phased Array System [PDF]

, 2018
Practical deficiencies related to conventional transcranial Doppler (TCD) sonography have restricted its use and applicability. This work seeks to mitigate several such constraints through the development of a wearable, electronically steered TCD velocimetry system, which enables noninvasive measurement of cerebral blood flow velocity (CBFV) for ...
Sabino J, Pietrangelo, Hae-Seung, Lee, Charles G, Sodini   +2 more
openaire   +2 more sources

Cerebral haemodynamic responses to inspiratory muscle work

Experimental Physiology, EarlyView.
Abstract Fatiguing inspiratory work has been shown to evoke a sympathetically mediated reflex that has systemic cardiovascular consequences, including increases in heart rate and blood pressure and a decrease in resting limb vascular conductance. Moreover, the response to this reflex appears to be attenuated in females compared with males.
Andrew H. Ramsook, Morgan A. Hughes, Wyatt W. Pruter, Kevin L. Webb, Ali Ataie, Chad C. Wiggins, Gabrielle A. Dillon, Sarah E. Baker, Michael J. Joyner   +8 more
wiley   +1 more source

Advances in Sonothrombolysis Techniques Using Piezoelectric Transducers

Sensors, 2020
One of the great advancements in the applications of piezoelectric materials is the application for therapeutic medical ultrasound for sonothrombolysis.
Leela Goel, Xiaoning Jiang
doaj   +1 more source