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Something that covers the tissue or object but also extends past the border.

overlap syndrome

A rheumatological disorder with features suggestive of several kinds of connective tissue disease, but not definitively diagnostic of any single syndrome. Overlap syndromes typically have elements of systemic lupus erythematosus, rheumatoid arthritis, and progressive systemic sclerosis, among other illnesses. SEE: mixed connective tissue disease; undifferentiated connective tissue disease.


(ō′vĕr-lā″) 1. An addition superimposed upon an already existing state. 2. In dentistry, a cast restoration for the occlusal surface of one or more cusps of a tooth but not a three-quarter or full-cast crown.

functional o. The emotional response to physical illness. It may take the form of a conversion reaction, affective over-reaction, prolonged symptoms of physical illness after signs of the illness have subsided, or combinations of these. Functional overlay may appear to be the primary disease; skill may be required to determine the actual cause of illness.


(ō′vĕr-lā′ĭng) The asphyxiation of an infant when a larger person lies on top of the baby and presses his or her face into the bed, preventing the infant from breathing.


(ō′vĕr-lōd″) To exceed the capacity of a cell, physiological process, organism, or system, causing it to fail. overload, n.

circulatory o. Volume o.

fluid o. Volume o.

iron o. Organ failure caused by excessive accumulation of iron in the body, usually from frequent transfusions or hemochromatosis.

pressure o. Demand placed on muscle, esp. heart muscle, in response to high blood pressure or stenotic valves. Over time pressure overload results in cardiac hypertrophy and, eventually, heart failure.

stress o. Excessive amounts and types of demands that require action. SEE: Nursing Diagnoses Appendix.

volume o. An excess of blood or body fluids in the circulation or extracellular tissues. It is usually caused by transfusions or excessive fluid that increase the venous pressure, esp. in patients with heart disease, and it can result in heart failure, pulmonary edema, and cyanosis. SYN: circulatory o.; fluid o.; hypervolemia.


Side effects, drug interactions, or other potential problems that result from the excessive use or excessive prescription of medications. Overmedication is a common problem in older adults, who may have multiple diseases and conditions and multiple health care providers.


(ō′vĕr-presh″ŭr) A manual force applied passively to a joint and surrounding soft tissue at the end of the range of motion in order to determine the end feel of the tissues.


Excessive output of an organic ...

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