| brash | Brittle, as wood or vegetables. Origin: Cf. Amer. Bresk, brusk, fragile, brittle. 1. A rash or eruption; a sudden or transient fit of sickness. 2. Refuse boughs of trees; also, the clippings of hedges. 3. <geology> Broken and angular fragments of rocks underlying alluvial deposits. 4. Broken fragments of ice. <medicine> Water brash, a severe form of diarrhea which sometimes attacks children just weaned. See: Brash brittle. Source: Websters Dictionary (01 Mar 1998) |
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| ventilator weaning | Techniques for effecting the transition of the respiratory-failure patient from mechanical ventilation to spontaneous ventilation, while meeting the criteria that tidal volume be above a given threshold (greater than 5 ml/kg), respiratory frequency be below a given count (less than 30 breaths/min), and oxygen partial pressure be above a given threshold (pao2 greater than 50mm hg). Weaning studies focus on finding methods to monitor and predict the outcome of mechanical ventilator weaning as well as finding ventilatory support techniques which will facilitate successful weaning. Present methods include intermittent mandatory ventilation, intermittent positive pressure ventilation, and mandatory minute volume ventilation. (12 Dec 1998) |
| water brash | <medicine> See Brash. Source: Websters Dictionary (01 Mar 1998) |
| weaning | Permanent deprivation of breast milk and commencement of nourishment with other food. (12 Dec 1998) |