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The author of this monograph undertook a study of the physiology and pathology of uterine contractions. For this purpose he used external hysterography (external tokometry) because he considers the intra-uterine method to be hazardous. For the first time he presents measurements of uterine contractions during the early months of pregnancy and he found that even early in gestation the uterus reacts to oxytocics. The author presents curves obtained not only during normal labor but also in pathologic conditions of pregnancy such as habitual abortion, hydramnios, preeclampsia, eclampsia, uterine atony and menstruation during pregnancy. He also studied the activity of the uterus during the latter days of the puerperium and during periods of severe after-pains. In his investigations of uterine contractions he was especially interested in the tonus of the uterus and the duration and amplitude of the uterine contractions. He found that the most important element was uterine tonicity. He
Physiologie und Pathologie der Wehen: Ergebnisse der Wehenmessung. JAMA. 1935;105(2):144. doi:10.1001/jama.1935.02760280056031
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