本文报告10例窦房结功能正常的儿童使用心得安对其窦房结功能的三个参数的影响。方法:研究对象为10例病儿,年龄3～16岁,平均8.3岁;据临床和心电图资料认为其窦房结功能正常,亦无与年龄不符的窦性心动过缓、窦性停搏、窦房结传出阻滞、P波形态异常以及过速过缓性心律失常等征象。实验程序为:药物镇静,经皮下从右股 This article reports the effect of propranolol on three parameters of sinus node function in 10 children with normal nodal function. Methods: The subjects were 10 children aged 3-16 years with an average of 8.3 years old. According to the clinical and electrocardiographic data, they believed that their sinus node function was normal and there was no sinus bradycardia, sinus arrest, Sinoatrial node block, P wave abnormalities and excessive bradyarrhythmias and other signs. Experimental procedure: drug sedation, subcutaneously from the right femoral head