[Effect of cardiac catheter investigations and angiocardiography on enzyme activity in serum (author's transl)].

The serum activities of LDH, alpha-HBDH, CK, GOT and GPT wer investigated in 124 patients who had undergone cardiac catheterization with angiocardiography or coronary angiography. The determinations were made before and 2, 16 and 40 hours after the investigation. There was no significant influence on the enzyme activities. Lengthy intracardial catheter manipulation, trans-septal puncture and ventriculography may cause transient clinically unimportant increases in activity, especially of CK within normal limits. Distinctly pathological enzyme values were only measured in individual cases of intramyocardial contrast media depots after ventriculogram.