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心房颤动的心电图特征为:窦性P波消失,代之以大小不等.形态不一的f波,心室律大多不齐.快、慢不均.单纯房颤多为洋地黄的适应症,如并发房室阻滞多表示洋地黄过量或心脏病情恶化,为此临床上应予识别.例1、2、3皆为慢性风湿性心脏病患者,有多年持续性房颤,长期服用维持量狄高辛,每日0.125~0.25毫克不等.图一为例1心电图:窦性P波消失,代之以f波,表明房颤存在,心室率慢约50次/分,第1、3、6个心动周期等长,均为1.14秒,其余R-R间期互不相等.提示房颤伴Ⅱ度房室阻滞,应
ECG characteristics of atrial fibrillation: sinus P wave disappeared, replaced by different sizes .F wave of different shapes, mostly ventricular arrhythmia .Fast, slow uneven.Atrial fibrillation mostly digitalis indications, Such as more than atrioventricular block that digitalis overdose or worsening of heart disease, this should be identified clinically .1,3,2 are all patients with chronic rheumatic heart disease, persistent atrial fibrillation for many years, long-term use of maintenance Dextrose daily 0.125 ~ 0.25 mg range Figure 1 Example 1 ECG: sinus P wave disappeared, replaced by f wave, indicating the presence of atrial fibrillation, ventricular rate was slow about 50 beats / min, 1, 3 , 6 cardiac cycles are equal, were 1.14 seconds, the rest of the RR interval are not equal to each other. Atrial fibrillation with a degree suggesting atrial block, should