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.
Department of Cardiothoracic Surgery, University Hospital of Umeã, Sweden.
G
G
Staffan
P
P
Svenmarker
S K
SK
Häggmark
K E
KE
Jansson
D002314:Cardioplegic Solutions; D006801:Humans; D006931:Hyperbaric Oxygenation / Q000379:methods*; D008567:Membranes, Artificial; D013696:Temperature