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目的 探讨超微心电图 (SMECG)在诊断小儿房性心律失常中应用价值。方法 对349例疑有心律失常的患儿 ,采用超微心电图仪同步实时描记SMECG和ECG的II、AVR或及AVF导联 ,检测毕描记 9或 12导联ECG。结果 SMECG检出房性心律失常 98例 ,ECG检出 79例 ,余 19例未检出 ,误检或漏检率为 19 4%。两者检验结果经卡方检验 ,P <0 0 0 5 ,有显著差异。结论 SMECG能直接反映窦房结的电活动、窦房间传导情况及心房兴奋的起源与传播等。可提高小儿房性心律失常的检出率。
Objective To investigate the value of ultramicro electrocardiogram (SMECG) in the diagnosis of atrial arrhythmia in children. Methods 349 cases of suspected arrhythmia in children, the use of synchronous ultrasonography real-time recording SMECG and ECG II, AVR or AVF lead, recorded in 9 or 12 lead ECG trace. Results There were 98 cases of atrial arrhythmia detected in SMECG and 79 cases were detected by ECG. The remaining 19 cases were not detected, the rate of misdiagnosis or missed detection was 19.4%. The two test results by chi-square test, P <0 0 0 5, a significant difference. Conclusion SMECG can directly reflect the electrical activity of the sinus node, sinus conduction and atrial excitation and the origin and transmission. Can improve the detection rate of atrial arrhythmia in children.