title: Unusual increases in serum lactate dehydrogenase isoenzyme-5 activity caused by severe congestive cardiac failure: two case reports.
abstract: Two cases of congestive cardiac failure had unusually high activities of serum lactate dehydrogenase and lactate dehydrogenase isoenzyme-5. Values for isoenzyme-5 exceeding 87% of the total serum activity, and increases of 228- to 380-fold of the upper reference limit, are very uncommon.
mesh_terms: D005260:Female; D006333:Heart Failure / Q000150:complications / Q000201:enzymology*; D006801:Humans; D007527:Isoenzymes; D007770:L-Lactate Dehydrogenase / Q000097:blood*; D008107:Liver Diseases / Q000150:complications; D008297:Male; D008875:Middle Aged
chemical_list: D007527:Isoenzymes; D007770:L-Lactate Dehydrogenase