The lamb's umbilical cord pulls in nutrients, and its heart pumps blood through an external oxygenator. (discovermagazine.com)
Then a bolus of Heparin was injected iv in a dose of 800UI / kg and 5 minutes later the patient was switched to the heart - lung machine (Sorin 5 and a pediatric oxygenator with 360 ml prime). (balkanvets.com)
The fetus's own heart pumps blood through an external oxygenator to avoid dangerous pressure differences. (discovermagazine.com)