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toegenomen; dichtheid

The quality of being opaque to a degree; the degree to which something reduces the passage of light.
NCI

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operační sál – informační systémy

Information systems, usually computer-assisted, designed to store, manipulate, and retrieve information for planning, organizing, directing, and controlling administrative activities associated with the provision and utilization of operating room services and facilities.
MSH

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ošetřovatelství na operačním sále

The functions of the professional nurse in the operating room.
MSH

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operační sály – technici

Specially trained personnel to assist in routine technical procedures in the operating room.
MSH

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operační sály

Facilities equipped for performing surgery.
MSH

A room in a health care facility equipped for the performance of surgical operations and procedures.
NCI

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operační výzkum

A group of techniques developed to apply scientific methods and tools to solve the problems of DECISION MAKING in complex organizations and systems. Operations research searches for optimal solutions in situations of conflicting GOALS and makes use of mathematical models from which solutions for actual problems may be derived. (From Psychiatric Dictionary, 6th ed)
MSH

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operátorové oblasti (genetika)

regulatory elements of an operon to which activators or repressors bind thereby effecting the transcription of genes in the operon.
CSP

The regulatory elements of an OPERON to which activators or repressors bind thereby effecting the transcription of GENES in the operon.
MSH

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operon

In bacteria, a group of metabolically related genes, with a common promoter, whose transcription into a single polycistronic MESSENGER RNA is under the control of an OPERATOR REGION.
MSH

group of contiguous genes coordinately regulated by a promoter and an operator element; found in prokaryotes.
CSP

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ophthalmia neonatorum

Acute conjunctival inflammation in the newborn, usually caused by maternal gonococcal infection. The causative agent is NEISSERIA GONORRHOEAE. The baby`s eyes are contaminated during passage through the birth canal.
MSH

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oftalmie sympatická

Granulomatous uveitis which follows in one eye after a penetrating injury to the other eye; the secondarily affected eye is called the sympathizing eye, and the injured eye is called the exciting or activating eye.
MSH

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arteria ophthalmica

Artery originating from the internal carotid artery and distributing to the eye, orbit and adjacent facial structures.
MSH

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asistenti oftalmologů

Persons academically trained to care for patients with eye diseases or structural defects of the eye, under the supervision of an ophthalmologist.
MSH

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nervus ophthalmicus

A sensory branch of the trigeminal (5th cranial) nerve. The ophthalmic nerve carries general afferents from the superficial division of the face including the eyeball, conjunctiva, upper eyelid, upper nose, nasal mucosa, and scalp.
MSH

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oční roztoky

Sterile solutions, essentially free from foreign particles and suitably compounded and dispensed, for instillation into the eye. It does not include solutions for cleaning eyeglasses or CONTACT LENS SOLUTIONS. (From Dorland, 27th ed)
MSH

A sterile solution containing a particular pharmaceutical agent administered to the external eye, usually in the form of droplets. An ophthalmic solution may contain different drugs with different mechanisms of actions, to target symptoms and their underlying cause. Classes of pharmacological agents used include antibiotics, beta-adrenergic agents, antihistamines, corticosteroids and prostanoids. The ophthalmic solution can be used to treat increased intraocular pressure, symptoms of allergic conjunctivitis, and ocular bacterial infections.
NCI

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oftalmodynamometrie

Measurement of the blood pressure of the retinal vessels. It is used also for the determination of the near point of convergence (CONVERGENCE, OCULAR). (From Cline, et al., Dictionary of Visual Science, 4th ed)
MSH

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oftalmologie

A surgical specialty concerned with the structure and function of the eye and the medical and surgical treatment of its defects and diseases.
MSH

A medical specialty concerned with the structure and function of the eye and the medical and surgical treatment of its defects and diseases.
NCI

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oftalmoplegie

Paralysis of one or more of the ocular muscles due to disorders of the eye muscles, neuromuscular junction, supporting soft tissue, tendons, or innervation to the muscles.
MSH

Weakness or paralysis of at least one of the muscles controlling the movement of the eye. It results from degeneration of the muscles or the neural pathways involved in the eye movement. Representative disorders causing ophthalmoplegia include ocular myopathies and multiple sclerosis.
NCI

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oftalmoskopie

Examination of the interior of the eye with an ophthalmoscope.
MSH

examination of the interior of the eye through an ophthalmoscope, an instrument consisting of lenses, light source and pierced concave mirror that directs reflected light through the pupil.
CSP

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opipramol

A tricyclic antidepressant with actions similar to AMITRIPTYLINE.
MSH

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opisthorchiáza

Infection with flukes of the genus Opisthorchis.
MSH

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Opisthorchidae

A family of lanceolate liver flukes of the class Trematoda which occurs in animals and man. There are several genera including Amphimerus, Cyclorchis, Delphinicola, Metorchis, Parametorchis, Phocitrema, Clonorchis, and Opisthorchis.
MSH

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Opisthorchis

A genus of trematode liver flukes of the family Opisthorchidae. It consists of the following species: O. felineus, O. noverca (Amphimerus noverca), and O. viverrini. The intermediate hosts are snails, fish, and AMPHIBIANS.
MSH

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opium

The air-dried exudate from the unripe seed capsule of the opium poppy, Papaver somniferum, or its variant, P. album. It contains a number of alkaloids, but only a few – MORPHINE; CODEINE; and PAPAVERINE – have clinical significance. Opium has been used as an analgesic, antitussive, antidiarrheal, and antispasmodic.
MSH

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vačice

New World marsupials of the family Didelphidae. Opossums are omnivorous, largely nocturnal and arboreal MAMMALS, grow to about three feet in length, including the scaly prehensile tail, and have an abdominal pouch in which the young are carried at birth.
MSH

small to medium sized omnivorous marsupials; marsupium is rudimentary or well developed; tail is prehensile and naked for at least part of its length; crepuscular and nocturnal; may be terrestrial, aboreal, or semiaquatic.
CSP

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oportunní infekce

An infection caused by an organism which becomes pathogenic under certain conditions, e.g., during immunosuppression.
MSH

infection caused by an organism which becomes pathogenic under certain conditions, eg, during immunosuppression.
CSP

An infection caused by an organism that does not normally cause disease. Opportunistic infections occur in people with weakened immune systems.
NCI

Infection caused by an organism that is capable of causing disease in immunocompromised patients only (e.g. HIV-positive or transplanted patients).–2004
NCI

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porucha s opozičním vzdorem

A behavior disorder characterized by a persistent pattern of defiant, disobedient, and hostile behavior towards authority figures, manifested by a frequent loss of temper, arguing, becoming angry or vindictive, or other negativistic behaviors.
NCI

recurrent pattern of negativistic, defiant, disobedient, and hostile behavior toward authority figures that persists for at least 6 months and is characterized by frequent occurrence of at least four of the following behaviors: losing temper, arguing with adults, actively defying or refusing to comply with requests or rules of adults, deliberately annoying others, blaming others for own mistakes, easily annoyed, angry or resentful; frequently attention deficit disorders and learning disorders are associated with this disorder.
CSP

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opsoniny

substance, generally an antibody, that makes a cell or microorgansim more susceptible to the engulfing action of phagocytes.
CSP

Proteins that bind to particles and cells to increase susceptibility to PHAGOCYTOSIS, especially ANTIBODIES bound to EPITOPES that attach to FC RECEPTORS. COMPLEMENT C3B may also participate.
MSH

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nervus opticus – atrofie

Atrophy of the optic disk which may be congenital or acquired. This condition indicates a deficiency in the number of nerve fibers which arise in the RETINA and converge to form the OPTIC DISK; OPTIC NERVE; OPTIC CHIASM; and optic tracts. GLAUCOMA; ISCHEMIA; inflammation, a chronic elevation of intracranial pressure, toxins, optic nerve compression, and inherited conditions (see OPTIC ATROPHIES, HEREDITARY) are relatively common causes of this condition.
MSH

A disorder characterized by loss of optic nerve fibers. It may be inherited or acquired. Acquired causes include ischemia, optic nerve neuropathy, glaucoma, trauma, radiation, brain tumors, and multiple sclerosis. It leads to vision disturbances.
NCI

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nervus opticus – atrofie dědičné

Hereditary conditions that feature progressive visual loss in association with optic atrophy. Relatively common forms include autosomal dominant optic atrophy (OPTIC ATROPHY, AUTOSOMAL DOMINANT) and Leber hereditary optic atrophy (OPTIC ATROPHY, HEREDITARY, LEBER).
MSH

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chiasma opticum

The X-shaped structure formed by the meeting of the two optic nerves. At the optic chiasm the fibers from the medial part of each retina cross to project to the other side of the brain while the lateral retinal fibers continue on the same side. As a result each half of the brain receives information about the contralateral visual field from both eyes.
MSH

hypothalamic structure formed by the crossing of optic nerve fibers from the medial half of each retina.
CSP

An anatomy term for an X-shaped crossing (for example, of nerves or tendons).
NCI

Nerve trunk which is continuous with right and left optic nerves and right and left optic tracts.
FMA

An anatomic structure formed by the crossing of the two optic nerves under the hypothalamus.
NCI

The place in the brain where some of the optic nerve fibers coming from one eye cross optic nerve fibers from the other eye.
NCI

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