منابع مشابه
Deadspace in Paediatric Anaesthetic Apparatus.
The effective apparatus deadspace of the Magill, Potter and Cape Town gas circuits has been investigated using a model system simulating 3and 8-year-old children. (1) The Cape Town system is more suitable for smaller children. (2) The Potter system is more suitable for larger children. (3) A generous fresh gas flow will decrease the deadspace of the Potter and the Cape Town systems. A flow of d...
متن کاملThe dependence of measured alveolar deadspace on anatomical deadspace volume.
BACKGROUND Changes in pulmonary deadspace are indicators of disease status (e.g. pulmonary embolus, acute respiratory distress syndrome) and they have prognostic usefulness in the intensive care unit. The components of pulmonary deadspace, the alveolar and anatomical deadspaces (VDalv and VDanat), are commonly considered to be independent (i.e. the addition of airway equipment should not alter ...
متن کاملVentilatory Responses of Children to Changes in Deadspace Volume
Alveolar deadspace is greater during anaesthesia than in the conscious state (Nunn and Hill, 1960), and during spontaneous ventilation it increases with depth of anaesthesia (Kain, Panday and Nunn, 1969). However, although the additional influence of apparatus deadspace was investigated by Kain, Panday and Nunn (1969), few studies have considered the effects of apparatus deadspace on anaestheti...
متن کاملSmall tidal volume ventilation using a zero deadspace tracheal tube.
The zero deadspace tracheal tube (ZEDS-TT) is a double-lumen endobronchial tube with a truncated bronchial limb. Functionally it is unrelated to the familiar endobronchial tube used in lung isolation surgery. It is placed in the same position as a regular tracheal tube and, by means of special connectors, one limb is used for inspiration and the other for expiration, thereby greatly reducing an...
متن کاملEffect of sodium nitroprusside-induced hypotension on pulmonary deadspace.
Deliberate hypotension with nitroprusside produced a 40% reduction in mean arterial pressure, but it did not cause any change in the pulmonary deadspace to tidal volume ratio ( Vb/ Vr). This was achieved by adequate hydration both before and during hypotension, as indicated by constant filling pressures. Thus we have shown that deliberate hypotension per se does not increase Vb/ VT, and that va...
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ژورنال
عنوان ژورنال: Anaesthesia
سال: 1991
ISSN: 0003-2409,1365-2044
DOI: 10.1111/j.1365-2044.1991.tb09921.x