British Journal of Anaesthesia, 1984, Vol. 56, No. 6 645-649
© 1984 The Board of Management and Trustees of the British Journal of Anaesthesia
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A MODEL LUNG WITH THE CAPACITY FOR SIMULATED SPONTANEOUS BREATHING
Department of Anaesthetics, Northwick Park Hospital Watford Road, Harrow, Middlesex HA1 3UJ
Division of Anaesthesia, Clinical Research Centre Watford Road, Harrow, Middlesex HA1 3UJ
Division of Bioengineering, Clinical Research Centre Watford Road, Harrow, Middlesex HA1 3UJ
A model lung is described which can be ventilated artificially but which also has the capacity to breathe spontaneously at pre-determined rate and depth. It appears particularly suitable for studying the performance of ventilators which interact with the patient, including those with the facility for triggering, synchronization and mandatory minute ventilation. An additional facility is the blocking of a simulated spontaneous inspiration during an artificial inflation ("Hering-Breuer reflex").
* Present address: National Hospital for Nervous Diseases, Queen Square, London W.C.1.
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