Greene H L, Ryan P F, McKusick V A
Chest. 1978 Aug;74(2):212-4. doi: 10.1378/chest.74.2.212.
We report the findings in a 60-year-old patient with a 30-year history of profound first-degree heart block with no associated cardiac abnormalities. The sinus node and the His-Purkinje system were normal. The time for atrioventricular nodal conduction was prolonged, with normal refractoriness both before and after administration of atropine, suggesting that the atrioventricular node may be lengthened, although electrically normal.
我们报告了一名60岁患者的检查结果，该患者有30年的严重一度房室传导阻滞病史，无相关心脏异常。窦房结和希氏-浦肯野系统正常。房室结传导时间延长，阿托品给药前后的不应期均正常，提示房室结可能变长，尽管电活动正常。
