Conclusion: The changes of endocardium MAP combined with the blood serum myocardium enzyme assay to diagnose earlier myocardial ischemia and arrythmia is a reliable and fast method.

• 结论：心律失常时心内膜MAP的特征性形态变化结合血清心肌酶指标是判断早期心肌缺血、心律失常的一种快速、可靠的方法。