A Preliminary Report
The Einthoven hypothesis implies that differences in the conductivity of body tissues are not sufficiently great to invalidate the concept that the body is a homogeneous volume conductor. Some investigators believe the lungs are sufficiently poor conductors to make questionable the concept that the body can be regarded as a homogeneous volume conductor. Intrabronchial electrocardiography is presented as a possible method for studying this problem. In ten individuals without manifest cardiac disease the distribution of potential variations in the lungs as manifested by the QRS complexes corresponded approximately and qualitatively with the distribution of the QRS complexes recorded from the body surfaces.
- © 1950 American Heart Association, Inc.