竇房結是正常心动的冲动起源。由于竇房結与心房密切相联,其間并无特殊传导組織,而且每一条单独的竇房結纖維皆能形成激动,只有广泛的病变方能使竇房結停止活动;因此,竇性静止及竇房阻滞这类心律紊乱比较罕見。更因短暂的漏搏并不出现明显的症状,即使間歇較长,房室結、房室束、左右束支以至心室肌皆能保护性逸搏,甚而成为心搏的異位节律点。所以,临床上就不如其它心律紊乱重要。但偶而上述代偿机搏不能及时地产生,就可能出现馬、阿、斯氏綜合征,严重威胁病人生命。就手边有限资料参 Sinus node is the origin of the impulse of normal heart. Due to the close connection of the sinoatrial node with the atrium, there is no special conduction tissue in between, and each individual sinoatrial node fibers can form an excitement. Only a wide range of lesions can stop the sinus node. Therefore, Sinusoidal block such heart rhythm disorders are relatively rare. More due to short-term leakage of stroke does not appear obvious symptoms, even intermittent long, atrioventricular node, atrioventricular bundle, left and right bundle branches and even ventricular muscle protection escaping, and even become a heartbeat ectopic rhythm point. Therefore, clinically less important than other cardiac disorders. Occasionally, however, if the above-mentioned compensatory measures can not be promptly produced, it may lead to horses, asthns syndrome and serious threat to the patient’s life. Limited information on hand parameters