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남궁미경(MK Namgoong),윤영옥(YO Yoon),남숙현(SH Nam),홍승길(SK Hong),나중열(JW Rha) 대한산부인과학회 1993 Obstetrics & Gynecology Science Vol.36 No.9
Many parturients and patients who have uterine diseases suffer form low back pain coin-cidently Whether the contraction of the longissimus muscle can be evoked by uterine pain is the purpose of this study. Recordings have been made from 34single efferent nerve fibers of longissimus muscle at L level of the a-chloralose anesthetized cat. The obtained results are summerized as follows; 1. Impulse discharges of 34 muscular efferents were recorded. Among them 21 fibers were a-motor fibers and 13 fibers were y-motor fibers 2. 21 a-motor fibers revealed the increased impules dischasrges to the injected brady-kinin adn potassium chloride into rterus. 3. 13 y-motor fibers had increased responses to intra-arterially injected bradykinin adn potassium chloride into uterus 4. The excitation response of bradykinin had logner duration and less small peak discharge in comparison with that of potassium chlorde. These results suggest that the signal of the uterine pain which was transmitted to the spinal cord gy way of the hypogastric nerve activated the back muscle efferents which elicited the contraction of the back muscle. This reflexive responses may explain the back pain by which uterine pain is accompanied.
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