Anaesthesia
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Comparative Study
An assessment of the Humphrey ADE anaesthetic system in the Mapleson A mode during spontaneous ventilation.
The Humphrey ADE anaesthetic breathing system in the Mapleson A mode has been compared with the Magill system in spontaneously breathing conscious volunteers and anaesthetised patients. In the latter, rebreathing occurred at a significantly lower fresh gas flow with the ADE system than when the Magill system was used (mean 45.6 ml/kg/minute and 56.5 ml/kg/minute respectively). There was no significant difference between the fresh gas flow at which rebreathing occurred in conscious volunteers.
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The problem of sedating patients requiring prolonged controlled ventilation has recently received considerable attention. Various therapeutic regimes are available and there appears to be a general move away from the use of muscle relaxants towards sedative drugs. ⋯ However, enthusiasm for its use must be tempered by recent reports of cardiovascular collapse following its administration. We wish to report a case of intracranial hypertension following the use of phenoperidine in a ventilated patient with a severe head injury.
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Editorial Historical Article
The fiftieth anniversary of the use of thiopentone in man.