Key result
Heart transplant recipients with atrial tachycardia in the recipient atrium can experience electrical breakthrough to the donor atrium, as seen in one reported case with 2-to-1 conduction.
This case report demonstrates that while the suture line usually provides complete electrical isolation, breakthrough conduction from recipient to donor atrium can occur in heart transplant patients.
Breakthrough conduction across suture lines may occur in transplanted hearts; extends understanding of post-transplant arrhythmias but leaves clinical implications open.
The suture between the recipient and donor atrium in a heart transplant patient usually gives complete electric isolation. In this case report, we describe two transplant patients with an atrial tachycardia in the recipient atrium. In the first patient there was no conduction to the donor atrium, whereas the second patient had a breakthrough with 2-to-1 conduction.
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Casteren et al. (2009) studied this question. Heart transplant recipients with atrial tachycardia in the recipient atrium can experience electrical breakthrough to the donor atrium, as seen in one reported case with 2-to-1 conduction.
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