Clinically Practical Lead Systems for Improved Electrocardiography: Comparison with Precordial Grids and Conventional Lead Systems
Clinically Practical Lead Systems for Improved Electrocardiography: Comparison with Precordial Grids and Conventional Lead Systems
复制标题
用于改善心电图的临床实用导联系统：与心前区网格和传统导联系统的比较
作者：
R. Lux;M. Burgess;R. Wyatt;A. Evans;G. Vincent;J. .. Abildskov
使用有限的引线来估计全身表面电位分布被研究作为一个实际的解决方案的问题与广泛的心电图取样用于表面电位映射。推导出两组实用的有限导联，每组32导联，并与一组30个心前导联（类似于用于估计梗死面积的st段和QRS制图）和一组9个导联（模拟传统12导联检查）进行对比。这两种阵列，其中一种排除了后侧部位，用于卧卧的患者，在估计192个铅测图的能力上几乎没有差异（平均均方根电压误差为35v，平均相关系数为0.97）。30导联和9导联阵列显示的电压（72,uV）始终是32导联阵列的两倍，并且模式估计较差（平均相关系数为0.91）。这些发现表明需要20-35个位置合适的电极来准确估计全身表面电位。他们还表明，30导联心前阵列和常规导联在估计地图上的能力没有区别
The use of limited leads for estimating total body surface potential distributions was investigated as a practical solution to the problem associated with extensive electrocardiographic sampling used in surface potential mapping. Two practical, limited lead sets of 32 leads each were derived and contrasted to a set of 30 precordial leads similar to those used in ST-segment and QRS mapping for estimating infarct size, and to a set of nine leads simulating those used in conventional 12-lead examinations. The two arrays, one of which excluded posterior sites for use in recumbent patients, showed little difference in ability to estimate 192 lead measured maps (average rms voltage error of 35,V and average correlation coefficient of 0.97). The 30- and 9-lead arrays consistently showed twice the voltage (72,uV) and poorer pattern estimation (average correlation coefficient of 0.91) than either of the 32 lead arrays. These findings indicate the need for 20-35 properly located electrodes for accurate total body surface potential estimation. They also show that there is no difference in the abilities of a 30-lead precordial array and conventional leads to estimate maps