The changes of heart function were compared after treatment.

比较各组治疗前后的心功能变化。

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Objective:To study the relationship of endothelin(ET) and creatine kinase(CK) to the changes of heart function of patients with acute myocardial infarction(AMI).

目的：探讨急性心肌梗塞（AMI）患者血浆内皮素（ET）及肌酸激酶（CK）浓度与心功能变化之间的关系。

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Laughter produces short-term changes in the function of the heart and blood circulation, increasing heart rate and oxygen consumption.

笑会造成心脏和血液循环功能的短期变化，增加心率和耗氧量。

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