| forced expiratory f. |
the rate of airflow recorded in measurements of forced vital capacity, usually calculated as an average flow over a given portion of the expiratory curve; the portion between 25 and 75 per cent of forced vital capacity is called the maximal or maximum midexpiratory f.
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| forced expiratory v. |
the fraction of the forced vital capacity that is exhaled in a specific number of seconds; abbreviated FEV, with a subscript telling how many seconds the measurement lasted. See also forced expiratory flow, under flow.
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| forced f. |
the administration of food by force to those who cannot or will not receive it.
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| forced m. |
1. passive m. 2. involuntary m.
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| forced r. |
deliberate hyperventilation.
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