The Multiple Puncture Cutaneous Tuberculin Test.

نویسنده

  • W S Craig
چکیده

At a recent meeting of the National Association for the Prevention of Tuberculosis, a special plea was put forward for a wholesale examination of children of school age, with a view to discovering signs of existing latent tuberculous infection. There was general agreement that in such a routine examination the tuberculin test must play an important part. and it is the purpose of this paper to describe a technique for cutaneous tuberculin tests which, in virtue of its speedy application without sacrifice of reliability, appears particularly suited to the requirements of such extensive investigations. In 1916, a tubercullin skin sensitization test known as the tattoo method was described" 2, which consisted in making a series of small punctures with a sterilized sewing needle through a film of pure old tuberculin placed on the previously cleansed skin. The tuberculin was afterwards wiped off and the test read in 48 hours. There was a distinct appeal in the rapidity of the above tattoo method, but the repetition of skin punctures appeared to involve an unnecessarv amount of phvsical discomfort and mental strain on the patient's part. With a view to avoiding these disadvantages while still adhering to the fundamentals of the technique. we used an ordinarv three-pronged vaccinator, applying it twice, and exactlv in the way described for the needle in the above method. In all, 50 cases were subjected to the tuberculin cutaneous test: (a) using the vaccinator, and (b) using the modified Pirquet test as described by McNeil8. The results of the two methods corresponded exactly. suggesting that the use of the vaccinator involved no loss of reliability. At best, the use of the vaccinator was but an extempore effort, and it was felt desirable to aim at a method which bv one application would affect the necessary number of skin punctures. and at the same time involve a test area constant in form and dimensions. Accordingly the instrument and technique described below were devised, and the method carried out over a series of 612 cases. Technique of method.-The instrument (Fig. 1) consists of a handle (A). five needles (B), and a protective cap (C). The needles are so arranged that when the long axis of the instrument is held at an angle of 300 to the plane of the skin, the points of the two longest (a and a') and of the two shortest (b and bi) form the …

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عنوان ژورنال:
  • Archives of disease in childhood

دوره 6 36  شماره 

صفحات  -

تاریخ انتشار 2007