Results 51 to 60 of about 8,181 (192)

RETROSPECTIVE EVALUATION OF THE FETUS AND NEWBORN ON THE BASIS OF INDICATORS OF FETAL HEMODYNAMICS AND TRANSCRANIAL CEREBRAL OXIMETRY

Медицинский вестник Юга России, 2013
Purpose: identify the correlation between antenatal evaluation of fetus and newborn according to cerebral fetal hemodynamic and transcranial cerebral oximetryMaterials and methods.
V. A. Kulakova, A. V. Orlov, M. G. Nekrasova   +2 more
doaj   +1 more source

Effects of the angle of head‐down tilt on dynamic cerebral autoregulation during combined exposure to cephalad fluid shift and mild hypercapnia

Experimental Physiology, EarlyView.
Abstract Astronauts experience combined exposure to a cephalad fluid shift and mild hypercapnia during space missions, potentially contributing to health problems. Such combined exposure may weaken dynamic cerebral autoregulation. The magnitude of cephalad fluid shift varies between individuals, and dynamic cerebral autoregulation may be affected more ...
Tomokazu Kato, Yojiro Ogawa, Ken‐ichi Iwasaki   +2 more
wiley   +1 more source

Predictive value of transcranial doppler ultrasound for cerebral small vessel disease in elderly patients

Arquivos de Neuro-Psiquiatria
Objective: To investigate the predictive value of transcranial Doppler (TCD) ultrasound for cerebral small vessel disease in elderly patients. Methods: Transcranial Doppler ultrasound and magnetic resonance imaging (MRI) were performed on 184 elderly ...
Shengqi Fu, Jiewen Zhang, Hongtao Zhang, Shuling Zhang   +3 more
doaj   +1 more source

Regional changes in cerebral blood flow between the upright and supine posture and over 3 days of bed rest

Experimental Physiology, EarlyView.
Abstract A reduction in cerebral blood flow (CBF) has been observed during spaceflight and bed rest. We aimed to examine the magnitude and regional heterogeneity of the decrease in CBF during bed rest compared to posture changes on Earth. Seventeen participants (age, 29 ± 9 years, 7 females) were studied in the upright and supine posture and over 3 ...
Carmen Possnig, Kyohei Marume, Gautam Babu, Sylvan L. J. E. Janssen, Christopher M. Hearon Jr, Katrin A. Dias, Satyam Sarma, Justin S. Lawley, Benjamin D. Levine   +8 more
wiley   +1 more source

Accuracy of Power Mode Transcranial Doppler in the Diagnosis of Brain Death

Journal of Medical Ultrasound, 2015
The diagnosis of brain death (BD) is complex. For this reason, we aimed to evaluate the accuracy of power mode transcranial Doppler (PMD-TCD) in diagnosing BD.
Alejandro M. Brunser, Pablo M. Lavados, Daniel A. Cárcamo, Arnold Hoppe, Verónica V. Olavarría, Javiera López, Paula Muñoz, Rodrigo Rivas   +7 more
doaj   +1 more source

Power Transcranial Doppler Ultrasound in the Detection of Intracranial Aneurysms [PDF]

Stroke, 2001
Background and Purpose —We sought to perform a large, prospective, multicenter, blinded study comparing power transcranial color duplex sonography (power TCDS) with intra-arterial digital subtraction angiography (IADSA) in the detection of intracranial aneurysms.
P M, White, J M, Wardlaw, E, Teasdale, S, Sloss, J, Cannon, V, Easton   +5 more
openaire   +2 more sources

Cerebrovascular pulsatility following long duration spaceflight is associated with changes in pulse pressure and carotid artery stiffness

Experimental Physiology, EarlyView.
Abstract Central artery stiffening increases the haemodynamic pulsations transmitted downstream towards target organs, including the brain. While recent evidence suggests that long duration spaceflight is associated with reduced common carotid artery (CCA) distensibility, cerebrovascular pulsatility has not been extensively characterized in astronauts.
Roxanne Fournier, Danielle K. Greaves, J. Kevin Shoemaker, Philippe Arbeille, Richard L. Hughson, Andrew D. Robertson   +5 more
wiley   +1 more source

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