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Objective To observe the clinical curative effect in childrens heavy bronchitis pneumonia accompanied with cardiac failure by the treatment of the two different methods of abstention with phentolamine.Methods Eighty one cases in childrens pneumonia accompanied with cardiac failure.Were stochastically divided into treatment group 1 (24 cases, treated by infusion with phentolamine) and treatment group 2 (30 cases treated by continuos pump with phentolamine), and control group, (27 cases, without phentolamine).The controlgroup was conventionally treated by anti□□ infection, antiasthrnatic effect and cardiac strength.Based on the treatment above, treatment group 1 takes the intravenous injection into murphs dropper with phentolamine, and group 2 takes the intravenous infuseion with phentolamine.The clinical efficacy of the three groups of patients, cough disappearance time, wheezing disappearance time, pulmonary rales disappeared time and adverse reactions were observed.Results Cough disappearance time was no significant difference in treatment group 1 and treatment group 2.Wheezing disappeared time and pulmonary rales disappeared time in the treatment group 2 were shorter than those in the treatment group 1 [(5.9±0.8)d vs (6.8±1.1) d, (6.3 ±0.9) d vs (6.8 ±0.9) d, P<0.05].Effective rate in the treatment group 2 was higher than the control group and treatment group 1 [96.7%(26/30) vs 91.7%(22/24), 85.2%(23/27)] , effective rate in the treatment group 1 was higher than the control group, differences were statistically significant(all P<0.05).Conclusion Children with bronchial pneumonia and congestive heart failure treated by intravenous drip infusion pump phentolamine, wheezing disappeared time and pulmonary rales disappeared time were shorten.There was no adverse reactions such as nasal resistance, irritability, increased heart rate.