| aging | The gradual changes in the structure and function of humans and animals that occur with the passage of time, that do not result from disease or other gross accidents, and that eventually lead to the increased probability of death as the person or animal grows older. It does not apply to microorganisms. (12 Dec 1998) |
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| aging, premature | Changes in the organism associated with senescence, occurring at an accelerated rate. (12 Dec 1998) |
| cell aging | The decrease in the cell's ability to proliferate with the passing of time. Each cell is programmed for a certain number of cell divisions and at the end of that time proliferation halts. The cell enters a quiescent state after which it experiences cell death via the process of apoptosis. (12 Dec 1998) |
| clonal aging | The deterioration in successive generations of a clone; thus paramecia and other simple forms, if allowed to reproduce asexually for a number of generations, invariably undergo deterioration, the characters of each group of descendants progressively departing from those of the original sexually produced ancestor. (05 Mar 2000) |
| skin aging | The process of aging due to changes in the structure and elasticity of the skin over time. It may be a part of physiological aging or it may be due to the effects of ultraviolet radiation, usually through exposure to sunlight. (12 Dec 1998) |
| erythrocyte aging | Senescence of the red blood cell. Lacking the organelles that make protein synthesis possible, the mature erythrocyte is incapable of self-repair, reproduction, and carrying out certain functions performed by other cells. This limits the average life span of an erythrocyte to 120 days. (12 Dec 1998) |
| ambulatory care | Medical care (including diagnosis, observation, treatment and rehabilitation) provided on an outpatient basis. Ambulatory care is given to persons who are not confined to a hospital but rather are ambulatory and, literally, are able to ambulate or walk about. (A well-baby visit is considered ambulatory care even though the baby is not walking). (12 Dec 1998) |
| ambulatory care facilities | Those facilities which administer health services to individuals who do not require hospitalization or institutionalization. (12 Dec 1998) |
| ambulatory care information systems | 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 ambulatory care services and facilities. (12 Dec 1998) |
| cancer care facilities | Institutions specializing in the care of cancer patients. (12 Dec 1998) |
| cardiac care facilities | Institutions specializing in the care of patients with heart disorders. (12 Dec 1998) |
| care | In medicine and public health, a general term for the application of knowledge to the benefit of a community or individual. (05 Mar 2000) |
| care, ambulatory | Medical care (including diagnosis, observation, treatment and rehabilitation) provided on an outpatient basis. Ambulatory care is given to persons who are not confined to a hospital but who are ambulatory and literally able to ambulate, to walk about. (A well-baby visit is considered ambulatory care even though the baby is not walking). (12 Dec 1998) |
| care, managed | Any system that manages healthcare delivery in order to control costs. (12 Dec 1998) |
| care proxy, health | A health care proxy is one form of advance medical directive. Advance medical directives preserve the person's right to accept or reject a course of medical treatment even after that person becomes mentally or physically incapacitated to the point of being unable to communicate those wishes. There are two basic forms of advance directives: 1. A living will, in which the person outlines specific treatment guidelines that are to be followed by health care providers. 2. A health care proxy (also called a power of attorney for health-care decision-making) in which the person designates a trusted individual to make medical decisions in the event that he or she becomes too incapacitated to make such decisions. Advance directive requirements vary greatly from one jurisdiction to another and should therefore be drawn up in consultation with an attorney who is familiar with the laws of the particular jurisdiction. (This entry is based upon material from the National MS Society). (12 Dec 1998) |