目的观察小剂量多巴胺对老年充血性心力衰竭（CHF）患者的心功能影响，探讨该药在CHF治疗中的应用价值。
Objective To observe the effects of small dose dopamine injection on cardiac function in aged patients with congestive heart failure (CHF).
退行性二尖瓣病变是引起犬只充血性心力衰竭的常见病因，尤其是小型犬和老年犬。
Degenerative mitral valve disease is a common cause of congestive heart failure in dogs, especially small, older dogs.
老年组的主要死因是充血性心力衰竭（80%）。
The main cause of death was congestive heart failure in the elderly with DCM(80%).
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