Abstract
The Neff Circulator, a device for circulating gases in an anaesthetic circle system, has been investigated in the laboratory, in conscious volunteers and in spontaneously breathing anaesthetized patients. In conjunction with a suitably designed face mask, the device is capable of eliminating apparatus dead-space. In conscious volunteers, who were capable of responding to this by reducing their tidal volumes, there was a marked reduction in the total work of breathing. However, spontaneously breathing anaesthetized patients did not respond by an alteration in the ventilation volume; it is therefore presumed that they experienced a reduction in arterial PCO 2 as a result of the incorporation of the device.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
