Biolight Meditech M800 - Chapter 6 Measuring ECG; Introduction

Handheld monitor user’s manual
Chapter 6-1
Chapter 6 Measuring ECG
6.1 Introduction
Before mechanical systole, the heart firstly produces
electrical excitement, which results in biological current, and
conducts the current to the body surface through tissue and
humour. Different potential changes take place at various
parts of the body, thus body-surface potential differences are
formed. Record the changing potential differences to form
the dynamic curve, i.e. ECG, also called body-surface ECG
or regular ECG.
Through many electrodes connected with ECG cables,
the monitor examines the changes of body-surface potential
caused by the heart of patient, observes the ECG activities,
records the ECG waveform, and calculates the HR. The
monitor can achieve 3-lead monitoring.