When the patient's heart was removed, a portion of the right atrium was left behind including the native sinoatrial node (SA node). A new heart was implanted which also included a SA node.

A junctional rhythm occurs when the electrical activation of the heart originates near or within the atrioventricular node, rather than from the sinoatrial node. Because the normal ventricular ...

sinus node (SN) function should be selectively depressed. The effects of acute, severe hypoxia (H) on SN refractoriness and sinoatrial conduction time (SACT) were studied using rabbit SN-right ...