[Relation between myocardial ultrastructural and serum enzymatic changes before and after intracardiac operations].

The serum GOT, CPK, LDH of 18 patients with heart disease were determined at pre- and postoperative periods. At postoperative period all the three serum enzymes were increased apparently (P less than 0.001). Slight to moderate myocardial ultrastructural damages were observed postoperatively in 10 cases. The degree of myocardial injure was correlated with the rising levels of the serum enzymes. This suggested that the change of the three enzymes may be utilized as a reference index of degree of myocardial injure.