title: [Analysis and processing of two-lead ECG signals based on orthogonal synthesizing].
abstract: OBJECTIVE
  To dig out the potential information in two-lead ECG signals, and discuss a new method of analyzing and processing two-lead ECG signals, viz. Orthogonal Synthesis Cardiogram (OSCG).
  
  
  METHODS
  From a case in MIT-BIH Database, several representative heartbeats were chosen to draw a series of OSCG, and analyses were made quantitatively and qualitatively.
  
  
  RESULTS
  All species of OSCG in the case differed greatly in form. The indices picked up such as maximal vector orientation and amplitude of QRS Loop etc. could effectively distinguish all species of heartbeats. Thus gets more characteristics about the heart transformation beat by beat.
  
  
  CONCLUSIONS
  OSCG is found to be a simple, capable method, suitable for use in manned space flight.
authors.forename: Ling
authors.initials: L
authors.lastname: Huang
authors.forename: Hong
authors.initials: H
authors.lastname: Yan
mesh_terms: D004562:Electrocardiography / Q000379:methods; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D012815:Signal Processing, Computer-Assisted; D013026:Space Flight / Q000295:instrumentation*