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窦性心动过缓(下称窦缓)较为常见,可伴有或不伴有明显的症状。对这种患者来说,应寻找其原因,不要满足于盲目提高其心率的一般治疗。窦缓的原因非常复杂,然而了解窦房结的功能状态极为重要。尽管目前临床上尚无直接评价窦房结功能的方法,但有许多间接判断其功能的试验可供临床应用。费勒(Ferrer)1973年提出对窦缓者静脉注射
Sinus bradycardia (hereinafter referred to as sinus slow) is more common, with or without obvious symptoms. For such patients, should find the reason, do not be satisfied with the general treatment to blindly improve their heart rate. The reason for slow sinus is very complex, but understanding the functional status of the sinus node is extremely important. Although there is no direct clinical evaluation of the function of the sinus node, but there are many indirectly determine the function of the test for clinical use. Ferrer (1973) proposed a slow intravenous injection of sinus bradycardia