Elements of pharmacy, materia medica, and therapeutics / by William Whitla.

  • Whitla, William, 1851-1933.
Date:
1889
Catalogue details

Licence: Public Domain Mark

Credit: Elements of pharmacy, materia medica, and therapeutics / by William Whitla. Source: Wellcome Collection.

    105/656 (page 101)
    this method, he has simply to add 12 to the age in years, and divide the age by the amount thus obtained, the answer giving a fraction, which is the required amount of the full adult dose. Thus, suppose the adult dose to be 1 grain, the dose will be:— For a child 1 year old, ... 1 _ 1 + 12 1 13 grain. For a child 2 years old, ... 2 2 + 12 1 7 grain. For a child 3 years old, ... 3 _ 3 + 12 1 3 grain. For a child 8 years old, ... 8 _ 8 + 12 2. 5 grain. For a child 12 years old ... 12 _ 12 + 12 1 2 grain. Cowling's rule is to divide the number representing the age ^of the patient upon his next birthday by 24. Thus a child 5 J ■ years old would receive -^^ or \ of the full adult dose of ordinary ■remedies. Brunton, in order to make this rule adapt itself to the metric system, proposes to use the number 25 instead of 24, .and to multiply both the numerator and denominator of thefrac- : tion by 4. Thus, for a child 3 years, the dose would be ascer- : tamed in this way— 4_ 25 _ 16 100 = '160 Suppose the adult dose to be 1 gramme, the child of 3 years would receive -160 gramme, or 16 centigrammes. U%osynGTasy.-.ThQ physician meets with individuals in whom an ordinary dose of some well-known drug causes symp- toms more intense, or entirely difeent from those usually observed to follow its administration, and when these cannot .be accounted for by any known law, the case is generally cregarded as one of idiosyncrasy. ij. generally ^nffir^ l^^^^^ ^it^ w^o^ the smallest P^^f^«« salivation, whilst fwf ' °? P'^i^ chloroform are sometimes borne by those unaccustomed to their use 'anf'ottr'^tT''''' medicines more than jany other mfluence ; this is particularly true of narcotics otardlir^^^^^^ ^P^^- took a p^nt the drur^rl experiencing the soporific effects of same. ^' ''^'^ examples of the 1