结论两种药物联用降低心脏前负荷、后负荷，增加心脏每分输出量，改善心肺功能。
Conclusion Combination use of two drugs can decrease pre load and post load of heart, increase cardial minute ouput, improve the heart function.
结论两种药物联用降低心脏前负荷、后负荷，增加心脏每分输出量，改善心肺功能。
Conclusion Combination use of two drugs can decrease pre load and post load of heart, increase cardial minute ouput, improve the heart function.
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