The main cause of death was congestive heart failure in the elderly with DCM(80%).

老年组的主要死因是充血性心力衰竭（80%）。

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Objective to analyze the related factors of congestive heart failure (CHF) in elderly female patients.

目的分析老年女性重症充血性心力衰竭的相关因素。

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Objective: To investigate the relationship of chronic congestive heart failure (CHF) and heart rate variability (HRV) in the elderly.

目的：探讨老年患者慢性充血性心衰(CHF)与心率变异性(HRV)的关系。

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