INTRAVENOUS OXYGENATOR FOR NEONATE

• Published in: Jinko Zoki Vol. 23; no. 1; pp. 323 - 327
• Main Authors: INUI, K, ORITA, H, GOTO, S, KOHI, M, WASHIO, M
• Format: Journal Article
• Language: Japanese
• Published: JAPANESE SOCIETY FOR ARTIFICIAL ORGANS 1994
• Subjects: Cyanotic heart disease; Intravenous oxygenator; Neonate
• ISSN: 0300-0818; 1883-6097
• DOI: 10.11392/jsao1972.23.323

Severe cyanotic neonates with complex heart disease or diaphragmatic hernia may require the emergency operation under progressing acidosis caused by hypoxia. ECMO will be one of useful devices to manage this critical stage at/after operation. However, these procedure require many surgical staffs, time and skill. Therefore, we devised a new type of intravenous oxygenator for neonate to manage these critical patients quickly with simple technique. Our device is made of 100 polyolefin fibers with oxygen inlet and outlet port. It is inserted via jugular vein to the IVC with use of guiding catheter. Its maximum diameter is 3.5mm. At first we evaluated this device on experimental circuit, then we implanted it in the 5 child dogs. In the experimental circuit study, we found this device increased oxygen transfer under increased blood flow and decreased blood oxygen saturation in circuit. In the animal study, the change of oxygen saturation in the pulmonary artery became large because the saturation in the femoral artery and vein was also increased. The added oxygen reached to about 1ml/kg/min when the venous blood saturation was 20%. Our equipment has low ability of adding oxygen, however, we think it will be useful under the condition of progressing acidosis due to hypoxia.