Reduced Electrode Electrocardiography System
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Abstract
Electrocardiographic (ECG) signals, such as the standard 12-lead, are synthesized from a novel reduced electrode set. Signals are received from a group of electrodes connected to predetermined locations on a human body and deriving at least one further ECG signal using predetermined transformation(s) on a set of ECG signals. This forms a desired set of signals. The group of electrodes may comprise the standard 12 lead electrode sites V2 and V5 plus one electrode positioned substantially level with V5 on the right anterior auxiliary line and a further electrode on each of the right hand side and left hand side of the body. In an alternative arrangement, the electrode position V2 is replaced by an electrode position Vc on the sternum directly between the standard electrode sites V1 and V2. Also disclosed is a method of improving accuracy of synthesized signals by detecting body posture and modifying the transformations.
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- 50. A method of synthesizing electrocardiographic (ECG) signals comprising receiving signals from a first group of electrodes connected to predetermined locations on a human body to acquire a first set of ECG signals and deriving at least one further ECG signal by applying transformation(s) on said first set of ECG signals, or a subset thereof, to form a desired set of signals, wherein the first group of electrodes comprises a V5 12 lead electrode site, a V2 12 lead electrode site, at least one electrode positioned substantially level with V5 on the right anterior axillary line, at least one electrode positioned on a right hand side of the body and at least one electrode positioned on a left hand side of the body, wherein said ECG signals are synthesized from data obtained from less than ten electrode sites.
Specification