Halothane: its Use in Closed Circuit

Modification of the Coxeter-Mushin circle absorber unit for use with halothane in the closed circuit.

•IN a previous article (Brown and Woods, Bnt. J. Anaesth., this issue, p. 333) we have referred to technical difficulties experienced with the machines we used in our closed circuit cases. As it seems possible that others working with similar apparatus may wish to employ halothane in this way, we thought that some account of the troubles encountered and the modifications required might be of in...

A versatile closed circuit.

A versatile closed circuit with new features is described. It may be used in a totally closed manner, without continuous gas inflow. As gas is absorbed from the circuit, it is replaced through a demand valve. Facilities for continuous gas input and use of a ventilator are included, and one control converts it to a non-rebreathing circuit. The circuit has excellent mechanical characteristics in ...

'Closed circuit' anaesthesia.

Aa inhalation anaesthetic is like a concerto-conducted in three movements, if one ignores the surgical cadenzas. The three movements of the well-conducted anaesthetic are: The induction, during which the patient is introduced to and thereafter loaded with an anaesthetic drug to produce a general tissue concentration sufficient for anaesthesia. The brain, with its rich blood supply, leads the ti...

Accuracy of halothane vaporizers in clinical use.

Nuprl and its Use in Circuit Design 1

Nuprl is an interactive theorem proving system in the LCF tradition. It has a higher order logic and a very expressive type theory; the type theory includes dependent function types ((types), dependent product types ((types) and set types. Nuprl also has a well developed X-Windows user interface and allows for the use of clear and concise notations, close to ones used in print. Proofs are objec...