The etiology of this condition is not known. They report ten cases which showed a coagulation time varying from normal to indefinite times, showing that the bleeding is not always dependent upon hemorrhagic diathesis. Another interesting point here is that the injection of blood cures these patients immediately and they have no return of symptoms. Transfusions do not cure patients with hemophilia. From 2 to 6 per cent.
Infection seems to act as a predisposing factor.
From observation, we note that babies that have been more or less asphyxiated have a tendency to bleed. Trauma, such as is frequently suffered in difficult deliveries, and the common methods of resuscitation may well be exciting causes. This was before the use of serum and blood transfusion. This may be increased up to fifteen or twenty minutes, and, in some cases, even longer. Ritter found 190 cases among 13,000 births at the lying-in hospital at Prague.