exchange

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exchange

 [eks-chānj´]
1. the substitution of one thing for another.
2. to substitute one thing for another.
gas exchange the passage of oxygen and carbon dioxide in opposite directions across the alveolocapillary membrane.
health care information exchange in the nursing interventions classification, a nursing intervention defined as providing patient care information to health professionals in other agencies.
impaired gas exchange a nursing diagnosis approved by the North American Nursing Diagnosis Association, defined as excess or deficit in oxygenation and/or carbon dioxide elimination at the alveolocapillary membrane (see gas exchange). Etiological and contributing factors include an altered oxygen supply, changes in the alveolar-capillary membrane, altered blood flow, and altered oxygen-carrying capacity of the blood. Defining characteristics include changes in mental status such as confusion, somnolence, restlessness, and irritability; ineffective coughing and inability to move secretions from the air passages; hypercapnia; and hypoxia. For specific medical treatments and nursing interventions, see airway clearance, ineffective; breathing patterns, ineffective; chronic airflow limitation; and anemia.
plasma exchange see plasma exchange.

ex·change

(eks-chānj'),
To substitute one thing for another, or the act of such substitution.

exchange

/ex·change/ (eks-chānj)
1. the substitution of one thing for another.
2. to substitute one thing for another.

plasma exchange  the removal of plasma from withdrawn blood, with retransfusion of the formed elements into the donor; done for removal of circulating antibodies or abnormal plasma constituents. The plasma removed is replaced by type-specific frozen plasma or by albumin.

ex·change

(eks-chānj')
To substitute one thing for another, or the act of such substitution.
References in periodicals archive ?
China Daily quoted a senior research and development manager with the grain-intensive futures exchange in Zhengzhou, capital of Henan Province in central China, as saying the Shanghai exchange would hold back the existing three commodity markets.
The CFTC's proposals recognize that the current "one-size-fits-all" approach to regulation of futures exchanges is inappropriate, and they generally incorporate sound judgments regarding the degree of regulation needed to achieve the CEA' s purposes.
On the futures exchanges themselves, financial contracts now account for about 70 percent of the activity, and retail participation in most financial contracts is negligible.
Tsang said in his fiscal 1999 budget address at the Legislative Council that the government plans to upgrade market infrastructure, strengthen regulatory reform and seek to demutualize and merge the stock and futures exchanges and clearing houses.
The CFTC can be viewed as the better choice because of its oversight of the futures exchanges and their clearing organizations.