房颤时长R-R概率及房室传导阻滞的推断  

Inference of probability of long K-R intervals versus a-trioventrkular Mock during atrial fibrillation

作　　者：但苏[1] 程慎珠[1] 黎源[1] 

机构地区：[1]江西省人民医院心内科,330006

出　　处：《心电学杂志》1995年第1期2-5,共4页Journal of Electrocardiology(China)

摘　　要：研究18例有房颤(Af)-窦性心律(SR)转化条件的24h Holter资料和10例有转化条件且证实有Ⅰ度(8例)或Ⅱ度一型(2例)A-VB但仅有ECG资料的病例,经归属于二项分布的长R-R概率统计推断,发现:(1)清醒状态下Af每100个心动周期(相当于1次常规ECG)出现断续3次及以上R-R>2s或连续2次及以上R-R>1.5s罕见于不合并A-VB的Af(P<0.05);(2)以上述指标作为Af合并轻度(Ⅰ度或Ⅱ度一型)A-VB的阳性标准可能具有44%—97%的预测敏感性(95%可信限);(3)心室率甚缓慢(25—40/min)且规则或基本规则可能是重度(包括Ⅱ度二型)A-VB的标记.认为常规心电图诊断Af合并A-VB仍有一定临床价值.A study of 18 cases in the 24-hour Holier monitoring and 10 cases in routine electrocardiography (ECG) with inversion from arrial fibrillation (Af) to sinus rhythm (SR) was reported. The latter had 1-degree (8 cases) or 2-degree I type (2 cases) atrioventricular block (A-VB; in SR. Reckoning with binominal distribution it was found that: (1) under waking conditions either R-R>2s not less than 3 times or R-R> 1. 5s not less than 2. times in succession in any set of 100 running cardiac cycles (corresponding with the number of beart beats in one record of routine ECG) was rare (<0. 05) in the cases of Af without A-VB; (2) with the above-mentioned signs as the positive criteria for diagnosing mild (1-degree or 2-degree I type) A-VB during Af. it might have a sensitivity of 44%- 97%; (3) regular or basically regular bradycardias on ventricular rate (25-40/min) might be a sign of serious (including 2-degree Ⅱtype) A-VB.Thus, the routine ECG for diagnosing A-VB during Af might be signification clinical application.

关 键 词：房室传导阻滞 心房纤颤 心电图 诊断 

分 类 号：R541.750.4[医药卫生—心血管疾病]