The causes and treatment of abortion . icate that the torsions have taken place a short tense cord is twisted, it may be completely laceratedacross, so that the foetus lies unattached in the uterus. The stenosis of the cord which results from twisting, or torsion,compression, or knots, may lead to laceration. Sein and Mau-riceau hold this view. Guillemont gives a case where the foetuswas three months old, and when the umbilical cord was tightlystretched. It was half lacerated through near its origin at the FCETAL CAUSES. 121 navel. Deiieux cites cases wliere he found a cord with
The causes and treatment of abortion . icate that the torsions have taken place a short tense cord is twisted, it may be completely laceratedacross, so that the foetus lies unattached in the uterus. The stenosis of the cord which results from twisting, or torsion,compression, or knots, may lead to laceration. Sein and Mau-riceau hold this view. Guillemont gives a case where the foetuswas three months old, and when the umbilical cord was tightlystretched. It was half lacerated through near its origin at the FCETAL CAUSES. 121 navel. Deiieux cites cases wliere he found a cord with ruptureof the umbiUcal vein and effusion of blood into its , Delamotte, and Leveret, describe similar cases of ruptureand hremorrhage. It may be complicated with other diseasedconditions of the vascular system, of the placenta, or the rupture occurs before the discharge of waters, theIkTemorrhage is termed by Tarnier Intra-Amniotic. Tarnier hasasked the question, If the umbilical cord is too short, can it drag. Fig. 23.—Twisting of cord (Martins Atlas). off or detach a portion of placenta or rupture itself? A cordhas been known to measure three to four inches in length, andcases have been recorded where the placenta has almost appearedto be inserted into the umbilical region of the child. In somecases a portion of the cord is of so small a circumference as tolead to the mistake of supposing it to be a stenosis of the bloodvessels. Parvin calls attention to this, and says that it is dueto an absence of Whartonian jelly. (See Fig. 24.) The injection 122 THE CAUSES OF ABORTION. of tliiid into the vessels of the cord will clear up any doubt,for if they are pervious they will allow it to flow through St Ange records a case of strangulation of the cord, dueto its being compressed by the legs of the foetus, which werespasmodically crossed over each other. Narrowing of the vessels of the cord may occur in syphilis,owing to the thickening of the
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