Category: A
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Alveolar dead
The volume of gas in alveoli that are ventilated but not perfused, or ventilated but not fully perfused.
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D-dimer
A by-product of the degradation of blood clots, specifically, of the fibrin within a clot. The presence of an elevated level of D-dimer in the setting of a suspected pulmonary embolus or deep venous thrombosis is justification for further testing. The absence of D-dimer in plasma is used to help exclude a diagnosis of deep…
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Adult day care center
A center for daytime supervision of adults. These centers provide supervised social, recreational, and health-related activities, usually in a group setting. The centers permit caregivers a respite and free them for other activities (work, play, appointments, socialization) during the day.
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Proliferative cyst
A cyst lined with epithelium that proliferates, forming projections that extend into the cavity of the cyst.
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Porencephalic cyst
An anomalous cavity of the brain that communicates with the ventricular system.
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Alveolar cyst
Dilation and rupture of pulmonary alveoli to form air cysts.
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Adventitious cyst
A cyst formed around a foreign body.
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Anovular cycle
Menstrual cycle in which ovulation is absent.
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Acquired cuticle
A layer of salivary products, bacteria, and food debris on the surface of the teeth; not a true cuticle.
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Angular curvature
A sharp bending of the vertebral column.