Electroanatomical mapping system using an optimal lead

An electroanatomical mapping system using an optimal lead, wherein the electroanatomical mapping system comprises:

• at least a surface electrode pair configured to:
• detect at least a surface potential signal, comprising a surface electrocardiogram (ECG), as a function of a cardiac phenomenon of a subject, wherein:
• the ECG comprises electrical activity representing a plurality of heartbeats of the subject;
• and
• the electrical activity of each heartbeat comprises a QRS complex which is a component of an electrical wave propagating through a heart of the subject;
• and
• be orthogonally placed on a torso of the subject in locations that maximize an average signal to noise ratio of the at least a surface potential signal;
• and
• at least a computing device, wherein the computing device comprises:
• a memory;
• and
• at least a processor communicatively connected to the memory, wherein the memory contains instructions configuring the at least a processor to:
• receive the at least a surface potential signal from the at least a surface electrode pair, wherein receiving the at least a surface potential signal comprises receiving the QRS complex of each heartbeat of the subject;
• identify a template QRS specifically corresponding to the cardiac phenomenon of the subject from a plurality of template beats;
• align the template QRS to the QRS complex of each heartbeat of the subject using a beat matching algorithm based on one or more QRS wave features including timing, shape and amplitude;
• generate a detection signal based on degree of similarity between the QRS complex of each heartbeat and the template QRS;
• define a threshold metric for accepting heartbeats based on the detection signal to identify matched heartbeats;
• and
• select, during an electrophysiologic (EP) procedure, only those heartbeats of the subject satisfying the threshold metric to analyze the cardiac phenomenon of the subject while ignoring other heartbeats.