View larger version (30K):
[in this window]
[in a new window]
|
Figure 1. Three years after undergoing heart transplantation, a 44-year-old man presented with very frequent supraventricular extrasystoles (asterisks). Myocardial rejection and clinically significant hemodynamic alterations were excluded as causes. During an electrophysiologic study, an electrode was positioned in the right atrium of the donor heart and in the native right atrial remnant. As expected, the native atrium was beating independently of the donor atrium. However, the beats from the native atrium elicited a premature atrial depolarization in the donor heart whenever they occurred more than 190 msec after the last atrial depolarization (arrows). Apparent conduction of the cardiac impulse across the recipient–donor . . . [Full Text of this Article] |
Previous
