Forceps with Adjustable Axis-Traction, and Forceps for Occipito-Posterior Positions of the Vertex
نویسنده
چکیده
1. Inefficiency of the powers. 2. Abnormality of the passages?a, Hard ; b, soft. 3. Malpresentation or malposition of the passenger. 4. Emergencies arising in mother or child demanding speedy delivery. Indications coming under any of these divisions, with the exceptions of the abnormalities of the hard passages, may arise witli a normal condition of the bony pelvis. From the point of view of the present paper, it will be convenient to consider the conditions of the forceps operation? 1. As occurring in a normal pelvis. 2. As occurring in an abnormal pelvis. We may take it for granted that the great majority of forceps operations are conducted in what may reasonably be regarded as normal pelves, the commonest indications being inefficient powers, resistant soft parts, or malpositions of the head. Accordingly, assuming that there is a normal type of pelvis, we imply that there must be a normal type of forceps. By this we mean an instrument which will enable us to direct the force of traction so that no more is spent on the mother's tissues than is sufficient to overcome the friction between them and the head. In other
منابع مشابه
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عنوان ژورنال:
دوره 21 شماره
صفحات -
تاریخ انتشار 2017