title: [Study on distribution of cardiac electric field around the isolated heart of guinea pig].
abstract: OBJECTIVE
  To define the distribution of the cardiac electric field around the isolated heart of guinea pig.
  
  
  METHODS
  The hearts of 26 guinea pigs were isolated and immersed in normal saline or distilled water, and the ECGs were recorded in 4 directions of every plane with 4 points deposited in every direction at different distances from the anterior, posterior and the laterals of both the ventricles of the heart.
  
  
  RESULTS
  In both media, ECGs were composed mainly of upright waves were recorded at all points in the 4 directions at the 3 levels.
  
  
  CONCLUSIONS
  The uniformed outward distribution of the cardiac electric field suggests that it is not dipolar but a sphere-like single source when the interference of different potentials of the reference points over the body surface is excluded.
authors.affiliation: Research Center of Electrocardiology, First Military Medical University, Guangzhou 510515, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Zhou
authors.forename: Bing-Sheng
authors.initials: BS
authors.lastname: Yin
authors.forename: De-Bin
authors.initials: DB
authors.lastname: Nong
authors.forename: De-Kuang
authors.initials: DK
authors.lastname: Yu
mesh_terms: D000818:Animals; D004562:Electrocardiography; D005260:Female; D006168:Guinea Pigs; D006321:Heart / Q000502:physiology*; D066298:In Vitro Techniques; D008297:Male; D012965:Sodium Chloride / Q000378:metabolism; D014867:Water / Q000378:metabolism
chemical_list: D014867:Water; D012965:Sodium Chloride