Magnesium: not essential for renal preservations by initial perfusion and hypothermic storage.

Experimental observations regarding the role of divalent magnesium ion in hypothermic renal preservation have presumed the inclusion of this substance in synthetic preservation media. Retrospective analysis of the validity and application of these experimental data and consideration of the problems related to precipitation of magnesium salts in "intracellular" perfusates has instigated investigation related to the necessity of including this ingredient in our previously described hyperosmolar intracellular electrolyte solutions. Omission of magnesium chloride from these perfusates has not adversely affected ultimate renal function in canine kidneys preserved for 2 and 3 days following perfusion and storage in these solutions. The absolute necessity of including magnesium in these solutions in order to effect successful renal preservation is challenged.