窦房结功能受身体内在性和外在性多种因素控制而保持恒定,如窦房结功能不全,即可造成心律失常和脑、心、肾供血不足的一系列临床症状和体征,影响病人健康,国外命名较多,国内北京地区认为以“病态窦房结综合征”(病窦)命名为宜。但当仅表现为窦性心动过缓或处于发病间歇期,欲判断其为生理上正常变异或为病理性改变,诊 Sinus node function by the body’s internal and external factors control and remain constant, such as sinus node dysfunction, can cause arrhythmia and brain, heart, kidney insufficiency a series of clinical symptoms and signs affect the patient Health, more foreign names, the domestic Beijing area that “sick sinus syndrome” (sick sinus) named appropriate. However, when only manifested as sinus bradycardia or in the intermittent period of illness, to determine whether it is physiologically normal or pathological changes of the diagnosis