An Anatomic Study Of The Subclavian Vein And Dependency Structure

Objective:To research the position, length and width of the subclavian vein and it's the relationship of the clavicle. To systematic analyze the length and width of brachiocephalic veins and superior vena cava for providing the anatomy accordance for the clinical operations.Materials and Methods:Forty adult cadaver (30 males, 10 females). All the samples are perfect without abnormalities, defects, and other diseases. In the samples, the arterial systems are filled with red foam rubber and the venous systems are filled with blue foam rubber. Then, to observe the following items: the length of subclavian vein, brachiocephalic veins and superior vena cava. To measure the distance of the midpoint of lower edge clavicle to the subclavian vein and the venous angle. To survey the distance about the clavicle to the first rib on the lower surface, and observe the relationship of the subclavian vein and adjacent structures.Results:1 Subclavian vein in the outer edge of the first rib origin, course were followed to the medial clavicle, the subclavian vein just at the collarbone, between the first rib and anterior scalene muscle. Subclavian vein medial to go trekking to the anterior scalene muscle, the jugular vein and merged into innominate vein. In front of the subclavian vein subclavian, both sides of the rear are the first rib, anterior scalene muscle at the medial side of subclavian vein.2 The diameter of left and right subclavian vein are, respectively (35.58±4.2) mm and (37.23±3.5) mm. The length of left and right subclavian vein are, respectively (12.3±1.2) mm and (13.6±2.0) mm. Left and right subclavian vein are no significant difference, (p> 0.05).3 The angle of left and right subclavian vein between the clavicle are, respectively (45.2±2.8)°and (44.9±3.1)°. The depth of the subclavian vein are, respectively (28.6±1.5) mm and (27.8±2.4) mm. Left subclavian vein and clavicle intersection and the distance between the first rib are , respectively (28.6±1.5) mm and (27.8±2.4) mm.4 Left and right brachiocephalic vein diameter are (18.2±2.8) mm and (17.3±3.1) mm. The length of left and right brachiocephalic vein are, respectively (82.3±4.5) mm and (42.1±2.6) mm.5 The distance of left and right subclavian vein and superior vena cava are (102.7±9.5) mm and (63.2±4.3) mm respectively. the distance of left and right subclavian vein between venous angle are (31.2±2.1) mm and (30.5±1.8) mm respectively. Conclusion:1 When do the subclavian vein punctures, the right subclavian vein puncture is easier than the left.2 The puncture point should be selected in the lower edge of the clavicle, in 1 / 3 at the junction of 20mm at the lower edge of the clavicle, when do the subclavian vein punctures. The depth of the needle should be 25mm. Needle puncture and angle of the lower edge of the clavicle was 45°angle, close to the coronal plane into the needle.