[The role of lactate acidosis and enzyme hyperactivity in evaluating hypoxic organ disorders in patients following cardiopulmonary byøass].

One hundred and fifty patients after cardiopulmonary bypass surgery have been examined. It has been shown that overall enzyme activity should be taken into consideration when determining the genesis of postoperative hyperenzymemia and diagnosing the topical (organic) damage. High lactate level (6-8 mmol/l) reflects profound circulatory hypoxia and shows a great likelihood of secondary damage of parenchymatous organs in patients after cardiopulmonary bypass surgery.

[Enzyme and isoenzyme tests in the diagnosis of myocardial infarct during aortocoronary bypass].

The authors assess the diagnostic value of several enzyme and isozymic tests used in the diagnosis of myocardial infarction in aortocoronary shunting (ACS): the diagnostic sensitivity and specificity, as well as the significance of both positive and negative results, and the diagnostic efficacy of every test have been estimated. Ninety-one patients subjected to autovenous ACS have been examined for the total creatine kinase (CK), lactate dehydrogenase (LDH), aspartate and alanine aminotransferase activities, and for the activities of CK and LDH isozymes. The results evidence a high diagnostic value of CK and LDH isozymes measurements.