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快频率依赖性心房阻滞报道极少见.现将我院发现2例报告如下. 例1 男,17岁.临床诊断:格林-巴利综合征。首次ECG:窦性P-P间期0.54秒,频率111bpm,P波形态高尖,电压0.30mV,时限0.10秒,为“肺型P波”。三天后复查:窦性P-P间期0.86秒,频率74bpmV,P波电压0.15m,时限0.10秒.动态观察当P-P间期0.58秒,频率103bpm,P波形态同首次ECG.原发病好转后按压颈动脉窦改变心率记录ECG:窦性P-P间期0.60～1.20秒,频率50～100bpm,P波电压均在0.15mV,时限0.10秒,未再出现“肺型P波”. 例2 女,38岁,三级脑外伤术前ECG正常.窦性P-P间期0.66秒,频率90bpm,PⅡ电压0,25mV,时限0.10秒.术后ECG:窦性P-P间期
Frequency-dependent fasting atrial block reported very rare. Now found in our hospital 2 cases are as follows .A male patient, 17 years old. Clinical diagnosis: Guillain-Barre syndrome. The first ECG: sinus P-P interval 0.54 seconds, the frequency of 111bpm, P-wave morphology sharp tip, voltage 0.30mV, 0.10 seconds time limit, as “pulmonary P wave.” Three days after the review: sinus PP interval 0.86 seconds, the frequency of 74bpmV, P wave voltage 0.15m, time 0.10 seconds. Dynamic observation when the PP interval of 0.58 seconds, the frequency of 103bpm, P wave morphology with the first ECG. Carotid sinus change heart rate recording ECG: sinus PP interval 0.60 ~ 1.20 seconds, the frequency of 50 ~ 100bpm, P wave voltage 0.15mV, time limit of 0.10 seconds, no longer appeared “pulmonary P wave.” 2 Female 38 Preoperative ECG was normal in aged and tertiary traumatic brain injury.The sinus PP interval was 0.66s, the frequency was 90bpm, PⅡ voltage was 0, 25mV, the duration was 0.10s.Postoperative ECG: sinus PP interval