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Superficial Thrombophlebitis
Superficial Thrombophlebitis A clot in a superficial vein, just under the skin.
RELATED TERMS--------------------------------------
Clot
A jelly-like mass of blood.
Vein
A blood vessel that carries blood from the body back into the heart.
Skin
Skin is an organ of the integumentary system; which is composed of a layer of tissues that protect underlying muscles and organs. Skin is used for insulation, vitamin D production, sensation, and excretion (through sweat).
SIMILAR TERMS--------------------------------------
Superantigen
An antigen that interacts with the T cell receptor in a domain outside of the antigen recognition site. This type of interaction induces the activation of larger numbers of T cells compared to antigens that are presented in the antigen recognition site.
Superego
In psychoanalytic theory, that part of the personality structure associated with ethics, standards, and self-criticism. It is formed by identification with important and esteemed persons in early life, particularly parents. The supposed or actual wishes of these significant persons are taken over as part of the child's own standards to help form the conscience.
Superinfection
Sudden growth of a different type of bacteria than the type originally diagnosed and treated. This is a common cause of treatment failure because the new type of bacteria is often resistant to first-line antibiotics.
Superior
The anatomical term for "above". i.e. the head is superior to the shoulder. Typically used in humans only. See Cranial/Caudal/Inferior.
Superior colliculus
A nucleus in the midbrain that coordinate visual, somatic and auditory information adjusting movements of the head and eyes towards a stimulus. contains four types of maps, a visual map, a map of the body surface, a map for sound in space and a motor map. Receives inputs from the retina (via the optic tract), the visual cortex, the somatosensory system and auditory systems. Mediates saccadic eye movements. Is the source of two major descending tracts, the tectospinal tract and the tectopontine tract in addition to regions of the brain stem controlling eye movements.
Superior temporal polysensory area (STP)
Area of monkey cortex. Virtually all cells respond to visual stimuli but some also activated by somatosensory and auditory input. Large receptive fields covering most of the visual field with no visuotopic order. Show radial or opponent direction selectivity. Some cells have fields responding to motion either towards the area centralis or away from it. Others show selective responses for object moving in depth, producing either looming or contracting pattern of motion in the field. Seem to be sensitive to information about peripheral optic flow.
Superior vena cava
The large vein that returns blood to the heart from the head and arms.
Superiority trial
A trial with the primary objective of showing that the response to the product is superior to a comparative agent (active or placebo control).
Supernumerary tooth
Extra tooth.
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Stress Test
See exercise stress test
Stroke (also called cerebral vascular accident or CVA)
Impaired artery blood flow to the brain. During a stroke, brain cells in the affected area are starved for oxygen and subsequently die.
Stunned Myocardium
If blood flow is returned to an area of heart muscle after a period of ischemia (lack of blood supply), the heart muscle may not pump normally for a period of days following the event. This is called "stunned" heart muscle or myocardium.
Subvalvular Aortic Stenosis
Subvalvular aortic stenosis is a narrowing of the flow of blood below the aortic valve in the left ventricle. It is usually caused by a membrane or thickening in the muscle in this area.
Sudden Cardiac Death
A sudden, unexpected death caused by loss of heart function. Most sudden cardiac deaths are caused by arrhythmias, such as ventricular fibrillation.
Superficial Thrombophlebitis
Survival Rates
Survival rates indicate the percentage of patients or grafts (transplanted organs) that are still alive functioning at a certain point posttransplant. Survival rates are often given at one-, three-, and five-year increments. Policy modifications are never made without examining their impact on transplant survival rates. Survival rates improve with technological and scientific advancements. Developing policies that reflect and respond to these advances in transplantation will also improve survival rates.
Systemic Circulation
The circulation of blood from the left ventricle, through an extensive network of vessels that penetrate every part of the body, to the right side of the heart.
Systolic Pressure
The pressure of the blood in the arteries when the heart pumps. It is the higher of two blood pressure measurements, e.g., 120/80, where 120 is the systolic pressure.
Spanish doctor
A doctor who, being or not a citizen of that country, has been admitted to practice medicine in Spain.
Swedish doctor
A doctor who, being or not a citizen of that country, has been admitted to practice medicine in Sweden.
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