Vector manometric study of the sphincter of Oddi in the dog: Functional and morphological correlation |
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| Authors: | Torahiko Takeda Hiroki Tohma Junichi Yoshida Gen Naritomi Hiroyuki Konomi Zhou-Lu Deng Naoko Kinukawa Masao Tanaka |
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| Affiliation: | (1) Department of Surgery I, Kyushu University Faculty of Medicine, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan, JP;(2) Department of Anatomy I, Kyushu University Faculty of Medicine, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan, JP;(3) Department of Medical Informatics, Kyushu University Faculty of Medicine, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan, JP |
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| Abstract: | The relationship between sphincter of Oddi pressure and the morphological structure of the sphincter was studied in eight dogs prepared with a duodenal cannula. Sphincter of Oddi manometry was performed in awake animals in three directions, ventral, left dorsal, and right dorsal, using a catheter with three radial side holes for recording at one level. The pressure in the ventral direction (26.6 ± 1.06 mmHg) (mean ± SEM) was significantly lower than that in the left and right dorsal directions (30.6 ± 1.42 and 31.2 ± 1.23 mmHg, respectively). This functional manometric difference in the three directions correlated closely with the morphological structure of the sphincter of Oddi; the sum of the thickness of the sphincter of Oddi muscle and duodenal proper muscle was greater on the dorsal than on the ventral side. To our knowledge, this is the first report of axial asymmetry in sphincter of Oddi pressure. (Received May 27, 1997; accepted April 24, 1998) |
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| Keywords: | : vector manometric study sphincter of Oddi dog |
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