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目的了解新西兰大白兔脊髓血供的节段性特点,为新西兰大白兔选择性麻醉模型的建立提供解剖学基础。方法采用甲基丙烯酸甲酯血管铸型方法,观察于第12胸椎至第1腰椎(T12~L1)水平结扎主动脉,并于一侧股动脉进行血管灌注后,红色有机物在脊髓的分布范围。结果当肝脏上部的下腔静脉及T12~L1水平主动脉被结扎后,通过一侧股动脉进行血管灌注时,有机颜料主要分布于腰骶段脊髓,并且最高不会超过胸髓中段(T9)。结论吸入麻醉药也会随着股动脉的血流进入腹主动脉,最后选择性作用于腰骶段脊髓。这为后续的新西兰大白兔选择性麻醉模型的建立提供解剖学基础。
Objective To understand the segmental features of spinal cord blood supply in New Zealand rabbits and provide anatomic basis for the establishment of selective anesthesia model in New Zealand white rabbits. Methods Methyl methacrylate vascular casting method was used to observe the distribution of red organic matter in the spinal cord after ligation of the aorta from the 12 th thoracic vertebra to the lumbar vertebra (T12 - L1). Results When the inferior vena cava and the T12-L1 level aorta were ligation in the upper part of the liver, the organic pigments were mainly distributed in the lumbosacral spinal cord when they were perfused through the femoral artery. . Conclusion Inhaled anesthetics also enter the abdominal aorta with the flow of the femoral artery and finally act selectively on the lumbosacral spinal cord. This provides an anatomical basis for the subsequent establishment of a selective anesthesia model in New Zealand white rabbits.