The activity of succinic de-hydrogenase (SDH) in ventricle myocardium was measured with Nitro-BT method, and Ca2--Mg2--ATPase with lead nitrate method. The change in the ultrastructure of the myocardium was also observed with electron microscopy.

• 取心室肌按Nitro-BT法测琥珀酸脱氢酶；以硝酸铅法Ca~(2+)-Mg~(2+)-腺苷三磷酸酶；并通过电镜观察心肌超微结构变化.