Abstract：Handheld ECG collector is a simple bipolar singlelead ECG recording device. A standard Ⅰlead ECG can be conveniently recorded just by pressing the positive and negative electrodes with both thumbs. It is mainly utilized in the monitoring of arrhythmias. As a household medical equipment, it is quite popular with the majority of middleaged and elderly friends. Based on the nature of unipolar and bipolar leads, and their intrinsic connection, this paper derives a recording method of standard leads and augmented unipolar leads. Meanwhile, on the basis of further exploring the internal connection between CR lead and Wilson lead, the method of directly recording CR chest lead ECGs by handheld ECG collector is creatively proposed. Both theory and practice show that the equivalent recording method of augmented unipolar limb lead and the bipolar recording method of CR chest lead can not only meet the clinical needs, but also prove to be unique. This method can fully develop the medical value of household medical devices, which is worthy of be promoted and popularized.
