A handbook of obstetric operations.

  • Playfair, W. S. (William Smoult), 1836-1903.
Date:
1865
Catalogue details

Licence: Public Domain Mark

Credit: A handbook of obstetric operations. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    Table I. Age of foetus. Bi-parietal diameter. Occipito-frontal diameter. Occiplto-bregmatic diameter. 7th month 82 j» 9 „ 2 in. 9 lines. 3 » 3 „ 1 j> 3 5, 2 „ 3 jj 4 „ 3 in. 8 lines. 3 55 9 „ 3 „ 10 „ 4 „ 4 „ 2 in. 10 lines. 3 „ 3 « 1 „ 3 5> 2 „ 3 „ 4 „ From the comparison of these measurements with those of pelves of various sizes the following table has been drawn up, which may guide us as to the proper time for interference. Table II.* Inches. Lines. When the sacro- pubic diameter is ] 2 and 6 or 7 induce labour at 30th ^ it » 2 8 or 9 j> 31st >p » 2 10 or 11 3) 32nd 3> 3t 3 — 9> 33rd » J» 3 1 J> 33rd 1> » 3 2 or 3 JJ 34th 3 3 4 or 5 5 or 6 3* It 35th 36th Having determined the exact size of the pelvis with as much care as we are able, we may safely take the above table as our guide, bearing in mind that the longer the gestation, the greater the chance of success- fully rearing the child. It has been suggested that we might interfere at a later period, or succeed in extract- ing a living child in cases in which there would other- wise be no chance of so doing, by combining version with the induction of premature labour. This proposal has not been sufficiently tested in practice to admit of a * New Sydenham Society's Year-hook^ 1863, p. 377.