title: [Macro-CK-BB-emia: a rare differential diagnostic problem in the early stage of infarct].
abstract: In the early phase of acute myocardial infarction the determination of the creatinkinase-isoenzyme CK-MB has a high diagnostic value. In everyday laboratory routine the CK-MB-immunoinhibition test is most widely used. In rare cases it can lead to spuriously high and therefore false positive CK-MB values. Two patients with suspected acute myocardial infarction are presented. The laboratory findings showed in both cases very high CK-MB-activities, values significantly above the differential diagnostic borderline of 6%. The course of the CK-activity and additional qualitative laboratory tests led to the diagnosis of macro-CK-BB-emia.
mesh_terms: D000219:Adams-Stokes Syndrome / Q000201:enzymology; D000368:Aged; D003402:Creatine Kinase / Q000097:blood*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006973:Hypertension / Q000150:complications; D007527:Isoenzymes; D008297:Male; D009203:Myocardial Infarction / Q000175:diagnosis / Q000201:enzymology* / Q000209:etiology
chemical_list: D007527:Isoenzymes; D003402:Creatine Kinase
vernacular_title: Makro-CK-BB-Amie: Ein seltenes differentialdiagnostisches Problem im frühen Infarktstadium.