Donor-to-recipient decremental conduction of atrial fibrillation followingorthotopic heart transplantation: Insights into the mechanism of atrioatrial conduction
M. Landolina et al., Donor-to-recipient decremental conduction of atrial fibrillation followingorthotopic heart transplantation: Insights into the mechanism of atrioatrial conduction, J CARD ELEC, 11(9), 2000, pp. 1043-1047
Citations number
15
Categorie Soggetti
Cardiovascular & Respiratory Systems","Cardiovascular & Hematology Research
Donor-to-Recipient Decremental Conduction of AF. We describe the unique cas
e of a heart transplant patient with type I atrial fibrillation that arose
in the donor atrium during a late acute rejection episode and conducted to
the recipient atrium with second-degree type I local block. After internal
cardioversion, programmed stimulation showed bidirectional decremental cond
uction across the suture line with nearly equal atrioatrial interval, where
as the recipient atrium showed progressively delayed intra-atrial conductio
n. These findings strongly suggest that the mechanism of atrioatrial conduc
tion may be electrical propagation along viable myocardium bridging the sur
gical scar and that the electrophysiologic characteristics of the recipient
atrium are involved in decremental conduction across the suture line.