腹部外科領域におけるBio-Pump<sup>®</sup>の使用経験

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  • REMOVAL OF THE TUMORS INVOLVING INFERIOR VENA CAVA USING BIO-PUMP<sup>®</sup>

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Recently the associated resection or reconstruction of vessels including portal vein has been increasingly prevailed in abdominal operations, where a use of Bio-Pump® as the extracorporeal circulation can be seen for some cases. However, the use for surgery of the inferior vena cava (IVC) is rare.<br> This paper describes recent experience with the use of Bio-Pump® in two cases for veno-venous (v-v) shunt during resection of the tumors which were involved in the NC. The case 1 was of renal cell carcinoma of the right kidney developing in the suprahepatic NC with forming a tumor thrombus. The case 2 was of malignant teratoma of the retroperitoneum expanding to the NC and diaphragm. The right nephrectomy and thrombectomy with the partial resection of NC were performed in case 1. In the other case, segmental resection of NC was carried out when the tumor was resected. In both cases Bio-Pump® was used for v-v shunt at 400-900ml/min for 80 and 254 min respectively. Operations were safely done by using Bio-Pump® without any abnormal change in the hemodynamics. There was no blood clotting, hemolysis and air emboli in the shunt tube.<br> Active v-v bypass techniques using Bio-Pump® can be used in abdominal surgery safely, and it may improve the resectability of abdominal tumors.

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