Ricke Anthony D, Swiryn Steven, Bauernfeind Robert A, Conner Jeffrey A, Young Brian, Rowlandson Gordan I
GE Healthcare, Diagnostic Cardiology, RP2122, 9900 Innovation Dr, Wauwatosa, WI 53226, USA.
J Electrocardiol. 2011 Mar-Apr;44(2):265-74. doi: 10.1016/j.jelectrocard.2010.09.008. Epub 2010 Dec 13.
This study compares the pacemaker pulse detection performance of the new high-bandwidth (hi-fi) electrocardiographic (ECG) acquisition system to a conventional system in a prospective clinical evaluation.
Electrocardiograms from 88 subjects with implanted pacemakers were recorded using different pacemaker programmed outputs and with different noise levels. Each ECG was recorded simultaneously from both systems. A cardiologist independently confirmed the clinically relevant ECGs. The pacemaker pulse detection sensitivity and positive predictive value (PPV) of each system were computed. The efficacy of each system was evaluated using a z test.
For the independently confirmed reports, the hi-fi system was superior, with higher sensitivity (99.2% vs 83.2%, P < .0001) and higher PPV (100% vs 99.9%, P = .33), for the detection of pacemaker pulses.
In a large group of subjects with implanted pacemakers and even in noisy conditions, the new hi-fi system was shown to improve pacemaker pulse detection sensitivity and PPV.
本研究在一项前瞻性临床评估中，比较了新型高带宽（高保真）心电图（ECG）采集系统与传统系统对起搏器脉冲的检测性能。
使用不同的起搏器程控输出和不同的噪声水平，记录88例植入起搏器患者的心电图。两个系统同时记录每份心电图。心脏病专家独立确认具有临床相关性的心电图。计算每个系统的起搏器脉冲检测灵敏度和阳性预测值（PPV）。使用z检验评估每个系统的有效性。
对于独立确认的报告，高保真系统在检测起搏器脉冲方面更具优势，灵敏度更高（99.2%对83.2%，P <.0001），PPV更高（100%对99.9%，P = 0.33）。
在一大组植入起搏器的患者中，即使在有噪声的情况下，新型高保真系统也能提高起搏器脉冲检测的灵敏度和PPV。
