A STOPCOCK FOR USE IN EXCHANGE TRANSFUSIONS
| Autor: | Leon Horowitz, Irwin Philip Sobel |
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| Rok vydání: | 1955 |
| Předmět: | |
| Zdroj: | Pediatrics. 16:108-108 |
| ISSN: | 1098-4275 0031-4005 |
| DOI: | 10.1542/peds.16.1.108 |
| Popis: | EXCHANGE transfusions through the umbilical vein may be performed in several ways. In the open method, a nurse draws donor blood through a two-way stopcock which is connected to the bottle by autoclaved polyvinyl tubing. The syringe filled with donor blood is handed to the operator or his assistant who injects it directly into the umbilical vein catheter. The advantages of this multiple syringe method are simplicity, speed and minimal opportunity for the formation of blood clots in the system. The disadvantage is the danger of the formation of an air embolus, because during the changing of syringes the umbilical vein catheter is in direct communication with the air. In the closed method, the operator draws donor blood from the bottle and injects it into the umbilical vein catheter by means of 2 three-way stopcocks fastened in tandem. The advantages of this single syringe method are the completely closed system and the avoidance of changing of syringes. The disadvantages are: 1) the keys of the 2 three-way stopcocks can be arranged in 9 different positions; 2) the chances of clotting are increased because of the use of 2 stopcocks, and 3) a direct connection between the blood in the bottle and the umbilical vein is possible. The stopcock to be described was designed to incorporate advantages of both methods while avoiding their disadvantages. The female end of the stopcock (see Fig. 1) is connected to the bottle of donor blood by means of autoclaved polyvinyl tubing; the male end is inserted into the umbilical vein catheter; and the sidearm is fitted onto the syringe.[See Fig 1 in Source Pdf] |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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