A new method for crystalloid cardioplegic oxygenation.
A new model of in vitro cardioplegic oxygenation was evaluated by placing Ringer's infusion bags in a pressure resistant barrel filled with pure oxygen maintaining 380mmHg.  In this hyperbaric environment, oxygen gradually diffused directly through the wall of the infusion bag reaching a concentration exceeding four volumes percent after 96 hours.  Decay in oxygen content was less than 1.5% after one week refrigerated at 4 degrees C.  In conclusion, the method described above offers an alternative approach to cardioplegic oxygenation, with the advantage of being safe, simple and without any extra expenditure.
Staffan
G
G
Department of Cardiothoracic Surgery, University Hospital of Umeã, Sweden.
Svenmarker
P
P
Häggmark
S K
SK
Jansson
K E
KE
D002314:Cardioplegic Solutions; D006801:Humans; D006931:Hyperbaric Oxygenation / Q000379:methods*; D008567:Membranes, Artificial; D013696:Temperature