Clinical cardiac functional grading evaluation results.
临床心功能分级评定结果。
Results: The significant difference was found in the comparison of the incidence rate of cardiac arrhythmia, average hospitalized days and cardiac functional grading between the two groups(P<0.05).
结果：两组患者心律失常发生率、平均住院日、心功能分级比较有显著性差异（P<0.05）。
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