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Vertebrobasilar insufficiency (VBI) describes a temporary set of symptoms due to decreased blood flow in the posterior circulation of the brain. The posterior circulation supplies the medulla , pons , midbrain , cerebellum and (in 70-80% of people) supplies the posterior cerebellar artery to the thalamus and occipital cortex . [ 1 ]
The Vertebral Artery Test or Wallenberg Test is a physical exam for vertebral artery insufficiency. Commonly, the VA test involves cervical spine motion to an end-range position of rotation, extension or a combination of both. At this point, the physician assesses for vertebrobasilar insufficiency (VBI) symptoms.
VBI Vaccines Inc. and Variation Biotechnologies, related manufacturers of vaccines; Vertebrobasilar insufficiency, a temporary set of symptoms due to decreased blood flow (ischemia) in the posterior circulation of the brain; Vertical blank interrupt, a hardware feature found in some computer systems that generate a video display
A medical test is a medical procedure performed to detect, diagnose, or monitor diseases, disease processes, susceptibility, or to determine a course of treatment. Medical tests such as, physical and visual exams, diagnostic imaging, genetic testing, chemical and cellular analysis, relating to clinical chemistry and molecular diagnostics, are typically performed in a medical setting.
A new approach to a routine blood test could predict a person’s 30-year risk of heart disease, research published Saturday in the New England Journal of Medicine found.. Doctors have long ...
In biomedical contexts, a biomarker, or biological marker, is a measurable indicator of some biological state or condition. Biomarkers are often measured and evaluated using blood, urine, or soft tissues [1] to examine normal biological processes, pathogenic processes, or pharmacologic responses to a therapeutic intervention. [2]
This type of Echocardiogram may be a better option for patients with thick chests, abnormal chest walls, chronic obstructive pulmonary disease and the obese. However, transthoracic is often superior to transesophageal for visualization of the apex of the left ventricle (e.g., left ventricular thrombus ) and visualization of the ventricular size ...
In vitro testing has been used to characterize specific adsorption, distribution, metabolism, and excretion processes of drugs or general chemicals inside a living organism; for example, Caco-2 cell experiments can be performed to estimate the absorption of compounds through the lining of the gastrointestinal tract; [20] The partitioning of the ...