AN ASSESSMENT OF THE ANATOMY OF THE SMALL INTESTINE FOR THE REPLACEMENT OF THE ESOPHAGUS
- VernacularTitle:小肠代食管的应用解剖研究
- Author:
Yongsong TAO
;
Shizhen ZHONG
- Publication Type:Journal Article
- From:
Acta Anatomica Sinica
1955;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
For the purpose of offering data for reference to surgical replacement of the esophagus, the vessels of the small intestine, the internal thoracic and the superiot thyroid arteries of 50 adult cadavers were dissected and their lengths and diameters were measured.1. There were an average of 5.4 arteries supplying the small intestine, their diameters ranged from 1.5 to 10.0mm and more than 50％ of them exceeded 3.0mm. The average length from the 1st to 6 th intestinal arteries ranged between 23.5 to 45.5mm and more than 50％ of them exceeded 30.0mm. The 3rd intestinal artery was the longest (averaged 45.5mm) with larger lumen, an ideal one for anastomosis.22％ of the arteries appeared as short trunks, at least one or two of their branches was suitable in length and size for utilization during operation.The average grading of tile arterial arches of the small intestine was 2.7 grades. The lumens of the arterial arches of the 1st and 2 nd grades were larger than those of the 3 rd grade and the rest, the jority of the latter were smaller than 0.9 mm in diameter. Therefor, the preservation of the 2 nd grade arterial arch will be important during the dissection of the small intestine.2. The average total length of the jejunum and ileum was 530.6 cm (ranged from 328.0 to 765.0cm). The segments of the small intestine supplied by individual intestinal arteries increased its length gradually from the 1st to the 8 th. The preservation of the arterial arches of a calibre 1.0 mm in diameter with their collateral circulation intact is of great importance at the upper part of the jejunum. The proportion of the lengths of straightened mesentery to that of the straightened,, intestinal loop was 1:2.6.3. The number of the intestinal veins averaged 2.9 branches which was less than that of the arteries. The approximate ratio o7 the numbers of veins to arteries was 1 to 2, and usually the 1st branch of the vein accompanied the artery.4. The average diameter of the superior thyroid arteries before branching measured 3.1 mm on e left and 2.8 mm on the right, and was an ideal one for anastomosis with the artery of the small intestinal loop.5. The average diameter of the internal thoracic vessels at the 2nd and 3rd intercostal space ranged from 2.6 to 2.8 mm in areteries and 2.4 to 3.1 mm in veins. The diameter of the arteries were approximately the same as that of the small intestine, but the veins appeared much smaller. Therefore the internal thoracic arteries are of choice for anastomosis with the small intestinal arteries during operation when an isolated small intestinal loop replaces the esophagus; but as to veins, external jugular or anterior jugular are more suitable.
