| Objective: To observe the clinical effect and study the functioning theory of Zeng Mai Decoction in treating Sinus Bradycadia about insufficiency of the Heart qi and yang and stasis of blood and phlegmy on the base of traditional and modern theory. Methods: 50 patients with SB were randomly divided into two groups: 25 patients in treatment group and 25 patients in control group. The treatment group was treated with Zeng Mai Decoction meanwhile in the control group the patients took xinbao pills. Four weeks later, the result is observed. Results: Curative effect of the heart rate :the total effect rate of the treatment group is 80%,in the control group ,its total effect rate is 60%.The comparison of the two groups of the heart rate,the total effective rate has statistic significance(P﹤0.05). It means that Zeng Mai Decoction has obvious effect on adding the heart rate (HR); The comparison of Holter:the comparison of the minimum heart rate,average heart rate and maximum heart rate of the two groups has statistic significance(P﹤0.01); Curative effect of the clinic symptom: the total effect rate of the treatment group is 92%,in the control group ,its total effect rate is 52%, the comparison of the two groups has statistic significance(P﹤0.05).Comparison of each clinic symptom cumulative scoring:the treatment group is better than the control group in improving shortness of breath ,spontaneous perspiration,fatigue,lacking in strength and so on.;The comprehensive curative effect : Zeng Mai Decoction is much better than xinbao pills in increasing heart rate and improving clinic symptom.Its treatment has statistical significance(P﹤0.05). Conclusion:The Zeng Mai Decoction is a group of effective drugs in treating SB . It maybe related to increasing the number ofβ-receptor,exciting the sinus,improving the function of heart.
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