. Questions and answers on the essentials of obstetrics; Prepared especially for students of medicine. ing. The compression of a diameterover one-third of an inch is liable to produce fractures. 3. As Leveies.—A to-and-fro movement should be associatedwith traction. Lusk holds that the side-to-side swaying of theforcep-handles is injurious to the maternal tissues. 4. As Rotators.—The use of the forceps as rotators is not, as arule, advised. 5. As Tractors.—This is the chief and essential power of theforceps. Traction should be intermittent and slow; imitating OBSTETRIC OPERATIONS 199 Nature as
. Questions and answers on the essentials of obstetrics; Prepared especially for students of medicine. ing. The compression of a diameterover one-third of an inch is liable to produce fractures. 3. As Leveies.—A to-and-fro movement should be associatedwith traction. Lusk holds that the side-to-side swaying of theforcep-handles is injurious to the maternal tissues. 4. As Rotators.—The use of the forceps as rotators is not, as arule, advised. 5. As Tractors.—This is the chief and essential power of theforceps. Traction should be intermittent and slow; imitating OBSTETRIC OPERATIONS 199 Nature as closely as possible. The force exerted should not ex-ceed 132 pounds, and the pulling should be done by the fore-arms. The direction of the traction should correspond with theaxis of the parturient canal. The axis of the birth-canal hasalready been described, and, therefore, requires no further effect axis-traction two methods have been described. Oneknown as Smiths, the other as Pajots. In the former, theoperator grasps the handles of the forceps at the end, while the Fig. Traction with Tarniers forceps. dther hand makes downward pressure beyond the lock. In thelatter, we apply the left hand as near as possible to the vulva,the right hand near the end of the handles ; then we use sometimesthese two hands in order to make the forceps, at times a lever ofthe first order, sometimes of the third, sometimes a lever and atractor at the same time, sometimes a direct tractor, according tothe resistance and the height of the pelvis at which they arefound. The best method, however, of securing axis-traction isby the use of Tarniers axis-traction forceps, or by a modificationof the instrument devised either by Lusk or Simpson. 200 ESSENTIALS OF OBSTETKICS. What are the indications for the use of the forceps ? 1. Whenever the life of the mother or child, or both, call forimmediate delivery. 2. Whenever the ordinary forces of labor are unable to effectdelivery. Wha
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectobstetrics, bookyear1
