Heung Dae Kim

The Effect of Hypobaric Priming Solutions on Extracorporeal Circulation during Open Heart Surgery

Before beginning the extracorporeal circulation, perfusionists should supply oxygen into the oxygenator and establish blood flow through the blood line of the heart-lung machine. But these manipulation can induce severe hypocarbic state of priming solutions due to wash out of gas in the solution. This study was carried out to examine the relationship of blood gas changes between hypocarbic priming solutions and body circulation in 15 patients undergoing open heart surgery with extracorporeal circulation. , pH, buffer base and were measured from priming solutions before and 15 minutes after the extracorporeal circulation. The results were as follows; 1) Before the extracorporeal circulation, mean level was in the priming solution. However, 15 minutes after extracorporeal circulation, the level was maintained at . 2) pH in the priming solution was variable from 6.93 to 7.99 (mean ), but after 15 minutes it was ranged from 7.28 to 7.42 (mean ). 3) Mean buffer base level in the priming solution was , but after 15 minutes, it was . 4) Mean level in the priming solution was , but after 15 minutes, it was .