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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Topical cardiac hypothermia: the effect of methylprednisolone sodium succinate.

We evaluated the effects of methylprednisolone sodium succinate (MPSS) on 60 minutes of myocardial ischemia during profound (5 degrees C) topical cardiac hypothermia (ice chips) in a canine right heart bypass preparation. The ventricular function curve shifted to the right and downward, but not significantly, after ischemia, and stroke work declined significantly for both control and treated dogs. Contractility (rate of rise of left ventricular pressure and maximum velocity of the contractile element) declined for both groups but not significantly. Total coronary flow, oxygen consumption, and metabolism of lactate and pyruvate were not different for control and treated dogs. Ultrastructure of the outer and inner myocardium did not demonstrate benefit from MPSS. Intracellular and extracellular edema of moderate severity was slightly worse in the subendocardium, and reversible mitochondrial injury of a mild to moderate degreee was symmetrically present. Ice-related injury was not noted. We were unable to deomonstrate that pretreatment with MPSS favorably alters cardiodynamics or ultrastructure after 60 minutes of profound topical cardiac hypothermia.[1]


  1. Topical cardiac hypothermia: the effect of methylprednisolone sodium succinate. Barner, H.B., Standeven, J.W., Jellinek, M., Menz, L.J., Hahn, J.W. Ann. Thorac. Surg. (1978) [Pubmed]
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