Barium solution
Barium solution: A liquid that contains barium sulfate, which produces a visible image on X-ray film. Barium solution outlines organs of the body so they can be seen as images on X-ray film.
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- Barker, Horace Albert
Barker, Horace Albert: (1907-2000) American biochemist who, among other things, discovered the biologically active forms of vitamin B12. Horace Albert Barker, informally called “Nook,” was educated at Stanford University and earned a PhD in chemistry in 1933. His research interest then turned to soil microbiology and microbial biochemistry. He set out on a two-year postdoctoral […]
- Barlow syndrome
Barlow syndrome: Barlow syndrome is mitral valve prolapse (also known as “click murmur syndrome”), the most common heart valve abnormality, affecting 5-10% of the world population. Most patients have no symptoms and require no treatment. However, the condition can be associated with fatigue and/or palpitations. The mitral valve prolapse can often be detected by a […]
- Baroparesis
Baroparesis: Reversible paralysis of the facial nerve due to pressure in the middle ear going up in a plane or surfacing in scuba diving. The excessive pressure in the middle ear compresses the facial nerve and causes temporary paralysis. After landing in a plane or surfacing in scuba diving, the ear pressure returns to normal […]
- Barosinusitis
Barosinusitis: Sinus troubles, particularly with pain, due to changing atmospheric pressures, as when going up or down in a plane. Also called aerosinusitis or sinus barotrauma.
- Barotitis
Barotitis: Middle ear problems due to changing atmospheric pressures, as when a plane descends to land. The problems include ear pain, ringing, diminished hearing and, sometimes, dizziness. The word barotitis (pronounced bar-o-tit-is) is compounded from bar- as in barometer + otitis meaning inflammation of the ear. Alternate terms include aerotitis, aerotitis media, barotitis media, and […]