Anaesthesia
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Historical Article
Classification of peripheral nerve fibres. An historical perspective.
The historical development of the nomenclature used to describe peripheral nerve fibres is described. Some of the properties of nerve fibres and their maturation are discusses. ⋯ A-alpha, beta, gamma, delta, B and C) should be used for efferent nerve fibres, while the nomenclature introduced by Lloyd44 (i.e. groups I,II, III and IV) should be applied to afferent fibres. The terms B, 'gamma efferent', Ia and Ib have specific implications with regard to their source or distribution irrespective of the conduction velocities of the fibres contributing to these groups.
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Historical Article
The development of appartus for intermittent negative pressure respiration.
The history of tank and cuirass respirators from the first known use of the intermittent negative pressure principle in 1832 to 1918, on the threshold of its extensive use in the treatment of respiratory paralysis, has been related. A second article will consider the period 1918 to the present day and suggest that negative pressure apparatus-particularly the cuirass respirator-still has its uses.