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KMID : 0358419630060040009
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Korean Journal of Obstetrics and Gynecology
1963 Volume.6 No. 4 p.9 ~ p.10
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A Graphic-Statistical Analysis of Labor in Korean Women
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Robinson, J. Courtland/鄭淳五
鄭淳五/郭顯模
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Abstract
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For many years the traditional method of characterizing labor has been to record he length of the first, second and third stages. However, many obstetricians have felt that t is was not completely accurate and was not a useful method of studying various factors such a pelvic size, analgesia, and anesthesia, so . other methods have been devised. Calkins et al, used a ethod which studied cervical resistance. Koller and Abt. used a cervical-dilatation time function to demonstrate the effect of ruptured membraned. Others have used other schemes. Friedman divided a method which would be more adaptable to statistical evaluation and the, Friedman curve resulted.
By carefully recording the amount of dilatation against time Friedman was able draw a curve. This curve was broken down into major areas which }could then be, measured. The following phases were used. The latent phase, the acceleration phase, the phase of the maximum slope the deceleration phase and the second stage. With the exception of the phase of the maximum slope all of the phases were recorded in - terms of time. The maximum slope was recorded in terms of centimeters per hour and this is a true rate.
Material
In this paper we have selected from the Department of ; Ob. & Gyn. of the Severance Hospital and the Yonsei University College of Medicine primigravidae and multigravidae patie and have drawn labor curves for each one. There are 150 primigravida and 130 multigravida and separate composite curves are drawn for both. In addition to these two curves a group of 80 selected normal and ideal primigra-vida patients were selected and the curve drawn. With this basic data the variation in each phase was calculated and compared with those reported by Dr. Friedman. In almost all cases our results are similar to his and thus indicate that Korean women have much the same labor pattern that American women have.
Results
In the below article the various labor curves can be seen as well as the contrast with the information reported by Dr. Friedman. To further demonstrate the usefulness of this method of analysing labor special curves were drawn in which such factors as early rupture of the membranes, heavy sedation, occiput posterior, position mid-forceps delivery, uterine dysfunction and C.P.D. in general were kept constant. The data from these special curves clearly l, shows the: influence of such factors on labor.
The material collected was also analysed in another manner. This time the cases were selected by picking those cases which were found at the extremes of the various phases. For a le those cases which had a ´Prolonged latent phase were selected and then the various,´types -of corm, ications in this group were analysed. These sesults can be seen in the below article. ´Conclusions:
From this study one can see that American and Korean women have much the same labor pattern. It can also be seen that this method of analysis is useful for recording the type of labor ac well as the influence of various factors on labor. It is recomended that medical students and practicing obstetricians become familiar with this curve and make use of´ it when following a specific patient.
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