Quigley M J, Sniderman K W, Yeung E Y
Department of Diagnostic Imaging, Toronto Hospital, Ont.
Can Assoc Radiol J. 1993 Feb;44(1):29-34.
The authors have designed a new coaxial system for translumbar aortography and studies of the pelvis and the legs from low or high aortic puncture sites. A no. 4 French pigtail catheter with a maximum flow rate of 18 mL/s is mounted coaxially on a 32-cm-long, 20-gauge, thin-walled, two-part needle. The needle cannula accepts a guide wire of diameter 0.021 in (0.53 mm), over which the catheter can be advanced craniad for aortography or caudad for arteriography of the leg. After the first injection of contrast agent, the catheter can usually be easily redirected to complete the study. Such studies were successfully completed in 73 of 79 consecutive patients; the aorta could not be cannulated in 2, and the catheter could not be redirected in 4. The sole complications were asymptomatic extravasation of the contrast agent in one patient and moderately severe back pain that resolved spontaneously in another. The authors describe the technique, as well as variations that have been developed to overcome aortic abnormalities.
作者设计了一种用于经腰主动脉造影以及从低位或高位主动脉穿刺点对骨盆和腿部进行研究的新型同轴系统。一根最大流速为18 mL/s的4法国猪尾导管同轴安装在一根32厘米长、20号、薄壁、由两部分组成的针上。针套管可容纳直径为0.021英寸（0.53毫米）的导丝，导管可沿导丝向头端推进以进行主动脉造影，或向尾端推进以进行腿部动脉造影。首次注射造影剂后，导管通常可轻松重新定位以完成研究。在连续79例患者中，73例成功完成了此类研究；2例无法插入主动脉，4例导管无法重新定位。唯一的并发症是1例患者出现无症状的造影剂外渗，另1例患者出现中度严重的背痛，但自行缓解。作者描述了该技术以及为克服主动脉异常而开发的变体。
